CN1560795A - Substitute method of role head of digital TV. program - Google Patents
Substitute method of role head of digital TV. program Download PDFInfo
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- CN1560795A CN1560795A CNA200410008616XA CN200410008616A CN1560795A CN 1560795 A CN1560795 A CN 1560795A CN A200410008616X A CNA200410008616X A CN A200410008616XA CN 200410008616 A CN200410008616 A CN 200410008616A CN 1560795 A CN1560795 A CN 1560795A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/16—Analogue secrecy systems; Analogue subscription systems
- H04N7/162—Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing
- H04N7/165—Centralised control of user terminal ; Registering at central
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/21—Server components or server architectures
- H04N21/218—Source of audio or video content, e.g. local disk arrays
- H04N21/21805—Source of audio or video content, e.g. local disk arrays enabling multiple viewpoints, e.g. using a plurality of cameras
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/85—Assembly of content; Generation of multimedia applications
- H04N21/854—Content authoring
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Abstract
The invention discloses a substitute method for a digital video program role head. The method inputs static digital image information or image digital type of role needed to be substituted into the computer or other image processing device uses arithmetic operation match to determine the role to be substituted to transfer the original static digital image information or image digital model into real digital image information and all arithmetic transfer parameter in middle head part of each frame in video image product of the role, thus the substitute for head image in substitute role in original image program by above mentioned head image of the substitute role according to the determined all arithmetic transfer parameter and the localizing parameter of the digital image or image digital model of the substituted and substitute roles and by using the arithmetic transfer matching arithmetic.
Description
Affiliated technical field
The present invention relates to a kind of replacement method of digital video program character head, especially a kind of two dimensional surface of a plurality of angles of the character head that can only need prepare replace by input in computing machine or other image processing equipment by user intention or the static digital image information or the image digitization model of 3 D stereo, can be by using the pixel matching algorithm in the mathematic(al) manipulation matching algorithm, (English full name is Critical Point Filter as the critical point filtration, be called for short CPF) algorithm, determine to be replaced in the former video program mathematic(al) manipulation parameter of role from the original static digital picture of this character head or image digitization model transferring to this role real image of head each frame picture of video program, again according to the mathematic(al) manipulation parameter of this image or image digitization model and be replaced and replace role's positional parameter and by using above-mentioned mathematic(al) manipulation matching algorithm, and use stepless zooming, angle and light tone degree are adjusted, image processing techniques such as profile and boundary treatment is carried out conversion and process of fitting treatment to static digital picture or the image digitization model of replacing character head, just can finish being replaced the replacement method that the role carries out a kind of video program character head of head replacement in the former video program works.
Background technology
Present video program works, as long as once producing and generating, role's image information just is difficult to change or can't change at all in its video program, and in some field, purpose for commerce or amusement often needs the image information of role in the video program is replaced, replace with other object role's that the user likes image information with personal color, but also there is not a kind of effective method can be simple in the prior art field, fast, exactly the head image of role in the video program is replaced, especially the character head image information with movement posture and facial expression is accurately correspondingly replaced.
Summary of the invention
In order to solve above-mentioned the deficiencies in the prior art, the object of the present invention is to provide a kind of replacement method of digital video program character head, this method is by the two dimensional surface of a plurality of angles of the character head of input preparation replacement or the static digital picture or the image digitization model of 3 D stereo in computing machine or other image processing equipment, and utilize the mathematic(al) manipulation matching algorithm (as the critical point filter algorithm, be called for short the CPF algorithm) and stepless zooming, angle and light tone degree are adjusted, image processing techniquess such as profile processing, can the digital image information that can be replaced the role in the former video program works is simple according to user intention, arbitrarily match replaces with the digital image information that another replaces role's (also claiming the object role) quickly, and make this replacement role have with former video program works in be replaced corresponding to head pose of role and facial expression.
The technical scheme of feature of the present invention and realization is as follows:
The replacement method of a kind of digital video program character head of the present invention, its main characteristics is:
(1), this method is utilized the static digital image information or the image digitization model of several different angles that can be replaced the role in the video program works, by using the pixel matching algorithm in the mathematic(al) manipulation matching algorithm, (English full name is Critical Point Filter as the critical point filtration, be called for short CPF) algorithm and stepless zooming, angle and light tone degree are adjusted, image processing techniques and conventional digital imaging processing softwares such as profile processing obtain in the described video program this and are replaced character head is rotated all angles that change continuously between the static digital image information of above-mentioned several different angles or image digitization model digital picture or image digitization model and corresponding digital image information and framing parameter.
(2), this method utilization can be replaced the role initial with reference to the numerical information of image and by mathematic(al) manipulation matching algorithm and use stepless zooming, angle and image processing techniquess such as the adjustment of light tone degree, profile processing, obtain from the initial mathematic(al) manipulation parameter that can be replaced the role with reference to image change matched transform of the real image of this character head movement posture, facial expression to the described video program.
(3), the digital image information or the image digitization model of several different angles of role's (also claiming the object role) that this method utilization preparation is replaced, by using mathematic(al) manipulation matching algorithm and stepless zooming, angle and light tone degree are adjusted, image processing techniques and conventional digital imaging processing softwares such as profile processing, and utilize the described role of being replaced initial with reference to image change this character head attitude in the described video program, the mathematic(al) manipulation parameter of the matched transform of the real image of facial expression obtains being replaced the corresponding to head pose of role in role that described preparation replaces and the former video program works, the digital image information of facial expression etc. and framing parameter thereof.
(4), this method is utilized the digital image information and the framing parameter thereof of the head pose that is replaced the role in role that obtained preparation replaces and the former video program works and is complementary, facial expression etc., and use suitable image outline and border to connect treatment technology, finish and replace role be replaced role pairing replacing naturally in former video program works with it.
The replacement method of a kind of digital video program character head of the present invention, it step that comprises has:
A, the static digital image information that obtains and be stored in a plurality of angles that are replaced character head in the digital video program and definite this are replaced the step of character head digital picture positional parameter;
B, the static digital picture that is replaced a plurality of angles of character head in the above-mentioned digital video program that obtains and store is replaced the step of the digital picture of character head by dynamic this of the synthetic continually varying of mathematic(al) manipulation matching algorithm;
C, with the dynamic digital image that is replaced character head synthetic among the above-mentioned steps b, respectively with this each frame of video program in this digital picture that is replaced character head set up the step of corresponding mutually mathematic(al) manipulation parameter;
D, the step of obtaining and storing static digital image information and definite this replacement character head digital picture positional parameter of a plurality of angles of replacing character head;
E, with the static digital picture of a plurality of angles of the replacement character head of obtaining in the steps d and storing by the synthetic continually varying of the mathematic(al) manipulation matching algorithm step of the digital picture of this replacement character head dynamically;
F, with the digital image information of replacement character head synthetic among the step e, utilize among step a and the d determined this to be replaced the role and replace role's head digital picture positional parameter and step c in the mathematic(al) manipulation parameter set up, by the mathematic(al) manipulation matching algorithm generate with this each frame of video program in this is replaced the replacement image of the corresponding coupling of digital picture of character head, and carry out the step of role's replacement;
G, by storing the storage medium of finishing the video program after the role replaces, on display, carry out the step of played in order.
In addition, among described step a or the d, the static digital image information that is replaced or replaces a plurality of angles of character head can be the static digital image information of two dimensional surface, also can be the static digital image information of 3 D stereo, even can be the static digital image information that portrait generated that is replaced or replaces a plurality of angles of character head by this; The synthetic continually varying dynamic digital image that is replaced or replaces character head is that this is replaced or replaces that character head is rotated continuously and the dynamic digital image information of stepless zooming between the digital picture of each adjacent angle among described step b or the e, and it also can be that this that utilize that digital image processing techniques generate is replaced or replaces the image digitization model of character head.
Compared with prior art, beneficial effect of the present invention is:
Because the replacement method of a kind of digital video program character head of the present invention, it has adopted mathematic(al) manipulation matching algorithm and stepless zooming, angle and light tone degree are adjusted, image processing techniques such as profile and boundary treatment, thereby only need prepare replacement role's (also claiming the object role) head pose by input in computing machine or other image processor, the static digital image information of the two dimensional surface of a plurality of angles of facial expression or 3 D stereo or image digitization model, just can the digital image information that can be replaced the role in the former video program works is simple according to user intention, random quickly natural match, coupling, replace with another object role's digital image information, and make this object role have with former video program works in be replaced role relative consistent head pose and facial expression, make through the video program works after role's replacement the same with former video program works smooth, vividly, and can have personal color more.
Description of drawings
Fig. 1 is the overall flow synoptic diagram of key step in the replacement method of a kind of digital video program character head of the present invention.
Embodiment
Below will and be described further in conjunction with the accompanying drawings with the specific embodiment of the present invention.
As shown in Figure 1, the replacement method of a kind of digital video program character head of the present invention has in order to realize the key step that comprises in the technical scheme that its goal of the invention adopts:
A, obtain and be stored in the static digital image information of a plurality of angles that are replaced character head in the digital video program and determine that this is replaced the step of character head digital picture positional parameter, for example can utilize computing machine and two, three-dimensional animation making software is (as Flash, Animo, softwares such as 3Dmax) be replaced the same dimension scale of character head in the drafting digital cartoon program, same attitude is looked squarely the front and a left side under the normal expression, the digital picture of each several angle of right flank is (as positive one, a left side, the right side is every one of 30 degree, each three), and it is positive and left to determine that this is replaced character head, the angle parameter of head rotation between these a few number word images of right flank (every interval 30 degree), reach the position coordinate parameters of direct picture overall profile and face, and this group digital picture and determined each parameter are stored in the storage medium;
B, with the static digital picture (suggestion under the equal state) that is replaced a plurality of angles of character head in the above-mentioned digital video program that obtains and store in the mathematic(al) manipulation scrambler by synthetic this of mathematic(al) manipulation matching algorithm (as the CPF algorithm) be replaced character head from left to right (or opposite) rotate step of the dynamic digital images of variation continuously;
C, be replaced the dynamic digital image that character head is rotated continuously with synthetic among the above-mentioned steps b, respectively with this each frame of video program in this digital picture that is replaced character head utilize mathematic(al) manipulation coding and decoding device to set up the step of corresponding mutually mathematic(al) manipulation parameter;
In step c, in the step about the mathematic(al) manipulation parameter of setting up mutual correspondence, further comprise:
C1, maybe this is replaced and extracts a frame the static digital picture of a plurality of angles of character head and be replaced the digital picture of character head (preferably this is replaced the positive digital picture of a frame under the standard state that character head is in normal expression and attitude from the described dynamic digital image that is replaced character head, as the direct picture of being drawn among the above-mentioned step a that is replaced character head) as original state reference picture and this original state reference picture that is replaced character head is marked especially, with the former video program step of stored record in storage medium together; And
C2, in mathematic(al) manipulation coding and decoding device, the digital image processing techniques of utilizing mathematic(al) manipulation matching algorithm (as the CPF algorithm) and adjusting the image angle and software with as described in be replaced character head the dynamic digital image through the angular setting of three dimensions therefrom intercept out a frame with as described in this is replaced the step of the corresponding to digital picture of angle of three dimensions of the digital picture of character head in the digital video program n frame picture (as described in digital video program should be combined n=1,2,3......n continuously by the different picture of n frame).Its concrete enforcement can be carried out as follows in proper order:
(1), in the mathematic(al) manipulation demoder, utilize the angle that is replaced character head dynamic digital image left-right rotation that generates among mathematic(al) manipulation matching algorithm (as the CPF algorithm) the set-up procedure b, make it meet that this is replaced the angle of character head image left-right rotation attitude in the described digital cartoon program n frame picture, write down this digital picture pn1;
(2), utilize mathematic(al) manipulation matching algorithm (as the CPF algorithm), above-mentioned image pn1 and pitch rotation function (by one with the described triaxial ellipsoid digital model that is replaced the same size of character head image of step a, vertically rotate with three-dimensional animation software, therefrom intercept a few width of cloth pictures, in its inputting mathematical transform coder, utilize the mathematic(al) manipulation matching algorithm to obtain) adjust and be replaced the angle that character head image pn1 rotates up and down, make it meet that this is replaced the angle of the pitch rotation attitude of character head image in the described digital cartoon program n frame picture, write down this digital picture pn2;
(3), utilize image processing software (as photoshop software) to adjust the above-mentioned angle that horizontally rotates that is replaced character head image pn2, make it meet that this is replaced the angle that horizontally rotates attitude of character head image in the described digital cartoon program n frame picture, write down this digital picture pn3; Thereby obtain on the angle of three dimensions all with this is replaced the corresponding to digital picture pn3 of angle of the rotation attitude of character head digital picture in the described digital video program n frame picture.
According to above-mentioned steps c2, in step c, in the step about the mathematic(al) manipulation parameter of setting up mutual correspondence, further comprise:
C3, in the mathematic(al) manipulation demoder, this is replaced the step that this frame that is intercepted among the mathematic(al) manipulation parameter of the digital picture of character head corresponding mutually size, light tone degree and attitude, expression and the determining step c2 is replaced positional parameter corresponding location parameter in described video program n frame of character head digital picture in this frame of digital image that utilizes existing digital image processing techniques such as mathematic(al) manipulation matching algorithm and stepless zooming, the adjustment of light tone degree and software to set up to be intercepted among the above-mentioned steps c2 and the described video program n frame.Its concrete enforcement can be carried out as follows in proper order:
(1), in the mathematic(al) manipulation demoder, utilize the stepless zooming function of mathematic(al) manipulation matching algorithm (as the CPF algorithm) to adjust the size dimension that this frame that intercepts generation among the above-mentioned steps c2 is replaced character head digital picture pn3, its adjustment is changed to meet that this is replaced the digital picture pn4 of character head size of images size in the described digital cartoon program n frame picture, the big or small mathematic(al) manipulation parameter that writes down this digital picture pn4 and change to image pn4 from image pn3;
(2), utilize mathematic(al) manipulation matching algorithm (as the CPF algorithm), above-mentioned digital picture pn4 and as described in this is replaced the digital picture of character head in the digital cartoon program n frame, set up to change to from digital picture pn4 that this is replaced the expression of the digital picture of character head, the mathematic(al) manipulation parameter of attitude the described digital cartoon program n frame;
(3), the light tone degree that utilizes image processing software (as photoshop software) to adjust above-mentioned digital picture pn4 makes it, and this is replaced the light tone degree Design Conception of character head image in digital cartoon program n frame picture as described in meeting, and changes to that this is replaced the size of character head digital picture in the described digital cartoon program n frame thereby finally obtain this frame of digital image pn3 that intercepts generation from above-mentioned steps c2, light tone degree and attitude, intercept integral body and part (face) the framing parameter corresponding location parameter in described digital cartoon program n frame that this frame that generates is replaced character head digital picture pn3 among the mathematic(al) manipulation parameter of expression and the determining step c2.
According to above-mentioned steps c1 and c2, in step c, in the step about the mathematic(al) manipulation parameter of setting up mutual correspondence, further comprise:
C4, in the mathematic(al) manipulation demoder, utilize mathematic(al) manipulation matching algorithm and conventional digital imaging processing software (can adjust the digital imaging processing software of rotation) that determined original state reference picture among this frame of digital image of being intercepted among the above-mentioned steps c2 and the step c1 is compared, set up in the digital picture that is replaced character head in this frame of digital image and the original state reference picture step of the mathematic(al) manipulation parameter of three mutual corresponding dimension angles variations of this digital picture that is replaced character head the digital picture Plane Angle.Its specific embodiments can be:
In the mathematic(al) manipulation demoder, utilize mathematic(al) manipulation matching algorithm (as the CPF algorithm) and conventional digital imaging processing software (the various digital imaging processing softwares that can adjust rotation to the digital picture Plane Angle, as photoshop, softwares such as illustrator) determined original state reference picture among this obtained among above-mentioned steps c2 frame of digital image pn3 and the step c1 is compared, obtain from this and be replaced the mathematic(al) manipulation parameter that character head original state reference image varies changes to these three dimension angles that are replaced character head digital picture pn3.
In step c, in the step about the mathematic(al) manipulation parameter of setting up mutual correspondence, also further comprise:
According to technique scheme and step, (being that described video program the 1st frame is to the n frame) sets up the step of corresponding mutually mathematic(al) manipulation parameter frame by frame from described video program first frame to a last frame;
With this is replaced the corresponding mutually mathematic(al) manipulation parameter of the digital picture of character head according to the sequence number of each frame of described video program (digital cartoon program) and former video program together, the step of stored record in storage medium in the digital picture that is replaced character head set up and each frame of described video program (digital cartoon program);
With technique scheme and step, a plurality of roles are finished the step of setting up corresponding mutually mathematic(al) manipulation parameter respectively or simultaneously; And
With technique scheme and step, set up the step of the mathematic(al) manipulation parameter of correspondence mutually to two-dimensional digital image or to three-dimensional digital image.
D, obtain and store the step of static digital image information and definite this replacement character head digital picture positional parameter of a plurality of angles of replacing character head, for example utilize various digital photographing apparatus (as digital video camera, digital camera, equipment such as digital scanner) obtain to replace among character head and the above-mentioned steps a and be replaced the same dimension scale of character head, same attitude is looked squarely one of front digital photos under the normal expression, a left side, the digital photos number of each several angle of right flank is (as a left side, right both sides revolution is crossed 45 degree and is taken one, each takes two), and determine that this replacement character head is positive and left, the angle parameter of head rotation between these a few number word images of right flank (every interval 45 degree), reach the position coordinate parameters of direct picture overall profile and face, and this group digital picture and determined each parameter are stored in the storage medium;
E, with the static digital picture (digital photos) of a plurality of angles of the replacement character head of obtaining in the steps d and storing in the mathematic(al) manipulation scrambler by synthetic this replacements character head of mathematic(al) manipulation matching algorithm (as the CPF algorithm) from left to right (or opposite) rotate step of the dynamic digital images of variation continuously;
F, in mathematic(al) manipulation coding and decoding device, digital image information with replacement character head synthetic among the step e, utilize among step a and the d determined this to be replaced the role and replace role's head digital picture positional parameter and step c in the mathematic(al) manipulation parameter set up, by the mathematic(al) manipulation matching algorithm generate with this each frame of video program in this is replaced the replacement image of the corresponding coupling of digital picture of character head, and carry out the step of role's replacement;
In step f, in the treatment step about role's replacement, further comprise:
F1, extract the original state reference picture that be replaced character head of stored record in storage medium among the above-mentioned steps c1, the dynamic digital image of described replacement character head is therefrom extracted the digital picture that a frame and the above-mentioned original state reference picture that is replaced character head are complementary through the angular setting of three dimensions, this digital picture is defined as replacing the original state reference picture of character head, and to the size of this digital picture, the light tone degree, attitude, expression, and the positional parameter of the integral body of this replacement character head and topography is calibrated with reference to the described original state reference picture that is replaced character head, revise, and will calibrate with the corrected parameter extraction and be stored in step in the storage medium; Its concrete enforcement can be carried out as follows in proper order:
(1), extracts the original state reference picture that be replaced character head of stored record in storage medium among the above-mentioned steps c1;
(2), compile in mathematic(al) manipulation, in the demoder, utilize mathematic(al) manipulation matching algorithm (as the CPF algorithm) and adjust the digital image processing techniques of image angle and replacement character head that software obtains from step e from left to right (or opposite) rotate the digital picture tr that extracts a frame and the above-mentioned original state reference picture that is replaced character head in the digital picture that changes and be complementary (angle of three dimensions of the described digital picture that is meant this frame replacement character head of being complementary should be consistent with the angle of three dimensions of the original state reference picture that is replaced character head) continuously, and this digital picture tr is defined as replacing the original state reference picture of character head, the concrete generation step of this digital picture tr does not repeat them here as the concrete generation step of the digital picture pn3 described in the step c2;
(3), in the mathematic(al) manipulation demoder, the stepless zooming function of utilizing mathematic(al) manipulation matching algorithm (as the CPF algorithm) is carried out stepless zooming to the original state reference digital image tr of above-mentioned replacement character head, the digital picture tr ' that the size that its adjustment is changed to be replaced the original state reference picture of character head among size and the above-mentioned steps c1 is complementary, the big or small mathematic(al) manipulation parameter that writes down this digital picture tr ' and change to image tr ' from image tr;
(4), utilize conventional digital imaging processing software (as photoshop software) that above-mentioned digital picture tr ' is carried out the adjustment of light tone degree, make its adjustment be changed to above-mentioned steps c1 in be replaced the digital picture trc that the light tone degree of the original state reference picture of character head is complementary, write down this digital picture trc and learn transformation parameter from the light tone number of degrees that image tr ' changes to image trc;
(5), in the mathematic(al) manipulation demoder, the original state reference picture and the above-mentioned digital picture trc that utilize mathematic(al) manipulation matching algorithm (as the CPF algorithm) and be replaced character head, determine to change to the calibration of integral body and (face) position, part and the attitude and the expression of the original state reference picture that is replaced character head from digital picture trc, corrected parameter, thereby the size between the original state reference picture tr that finally obtains being replaced the original state reference picture of character head and replacing character head, the light tone degree, attitude, expression and calibration and the corrected parameter that should replace whole and local (face) position of character head, and should calibrate and corrected parameter extraction and being stored in the storage medium;
F2, in the mathematic(al) manipulation scrambler, utilize calibration and the corrected parameter stored among this synthetic among mathematic(al) manipulation parameter that three dimension angles being set up among the above-mentioned steps c4 change and the step e replacements character head continually varying dynamic digital image and the step f1, by the mathematic(al) manipulation matching algorithm original state reference picture of determined replacement character head among the above-mentioned steps f1 is generated and above-mentioned video program (digital cartoon program) n frame in this be replaced the character head image three dimensions the corresponding to replacement image of angle and revise this replacement integral image and the step of part (face) framing parameter;
F3, in the mathematic(al) manipulation scrambler, utilize the size of being set up among the above-mentioned steps c3, light tone degree and attitude, calibration and the corrected parameter stored among the mathematic(al) manipulation parameter of expression and the step f1, by the mathematic(al) manipulation matching algorithm with generated among the step f2 with video program (digital cartoon program) n frame in this corresponding to replacement image of three dimension angles that is replaced the character head image generate with video program (digital cartoon program) n frame in this is replaced the size of character head image, light tone degree and attitude, the replacement image that expression is complementary is also revised this replacement integral image and the step of part (face) framing parameter;
F4, utilize the replacement image and this replacement integral image of correction and the positional parameter of part (face) image that generate among the step f3, and the positional parameter of determining among the step c3 that is replaced whole and part (face) digital picture of character head corresponding location parameter in described video program (digital cartoon program) n frame is replaced the step that the role replaces in to this frame.
In step f, in the treatment step about role's replacement, also further comprise:
Utilize conventional digital picture profile and boundary treatment technology and software, respective background in the replacement image of the replacement character head that generated and the described video program is carried out the image outline border and block the step of situation processing;
According to technique scheme and step, (being that described video program the 1st frame is to the n frame) carries out the step of the replacement processing of character image frame by frame from described video program first frame to a last frame;
With technique scheme and step, a plurality of roles are finished the step of replacing or finishing replacement simultaneously respectively;
With technique scheme and step, to the replacement conversion of two-dimensional digital image, or to the step of the replacement conversion of three-dimensional digital image.
G, by storing the storage medium of finishing the video program after the role replaces, the step of carrying out played in order on the display (also can finish only storage earlier and the broadcast waiting until after of video program after the role replaces).The implementation step of the replacement method of a kind of digital video program character head so far of the present invention is all finished.
The static digital image information of a plurality of angles that are replaced character head of obtaining and storing described in the above-mentioned steps a, can be from former digital video program or from have this other digital video program that is replaced character image, select as required and intercept out this be replaced the static digital picture of a plurality of different angles of character head; Also can be by various digital image device, the image that this is replaced a plurality of different angles of character head be taken, taken pictures or scan again through intercepting or choosing and obtain as equipment such as digital video camera, digital camera, digital scanners; Can also be by synthetic by computer manufacture or manual drawing forms that this is replaced the static digital image information that portrait generated of a plurality of angles of character head.
The static digital image information of a plurality of angles of the replacement character head described in the above-mentioned steps d can be the static digital picture of a plurality of different angles of this replacement character head of selecting as required and intercept out from the digital video program with this replacement character image; Also can be by various digital image device, the image of a plurality of different angles of this replacement character head be taken, taken pictures or scan again through intercepting or choosing and obtain as equipment such as digital video camera, digital camera, digital scanners; Can also be by or the static digital image information that portrait generated of a plurality of angles of this replacement character head that manual drawing form synthetic by computer manufacture.
Among above-mentioned steps a or the d, the static digital image information that is replaced or replaces a plurality of angles of character head can be that this is replaced or replaces character head at the static digital image information of looking squarely a plurality of angles in head front, rear, left and right obtained under the state; Also can be that this is replaced or replaces character head at the static digital image information of overlooking and look up a plurality of angles in head front, rear, left and right obtained under the state.If the above-mentioned static digital image information that is replaced or replaces a plurality of angles of character head intends adopting digital photographing apparatus to obtain, suggestion but be not limited under normal illumination situation eyelevel shot and write down each and can be replaced the role or replace the digital picture that the without a hat on and face of character head is in a plurality of angles of normal expression attitude (amimia no attitude), from the left surface to the front, be no less than seven frames to right flank again, the back, both sides is no less than three frames with positive back, end face is no less than a frame, with this static digital image information, and should make brightness of illumination when the static digital picture of a plurality of angles of character head is replaced in picked-up as a plurality of angles that are replaced or replace character head as far as possible, screening-mode (head pose and the facial expression of replacing the role when taking), the distance of shooting angle and focal length and shooting distance and picked-up are consistent when being replaced the static digital picture of a plurality of angles of character head.
In addition, what need indicate is: among described step a or the d, the static digital image information that is replaced or replaces a plurality of angles of character head can be the static digital image information of two dimensional surface, or the static digital image information of 3 D stereo.
Among described step a or the d, the determined head digital picture positional parameter that is replaced or replaces the role is meant: (1), this is replaced or replace the positional parameter of the whole or local digital picture of character head, and for example this is replaced or replaces location contour curve and positioning point coordinate parameter on the whole or local digital picture (digital picture that comprises whole contouring head and face) of character head; (2), this is replaced or replaces the positional parameter of relative position between the digital picture of a plurality of angles of character head, in brief, this of different deflection angles is replaced or replaces the angular deflection absolute coordinates parameter (angle parameter of digital picture each self-deflection of different deflection angles) of digital picture in the same coordinate system of character head and the relative coordinate parameter of angular deflection (between the digital picture of different deflection angles at interval angle parameter) exactly.
Among described step b or the e, the continually varying dynamic digital image that is replaced or replaces character head that is synthesized is that this is replaced or replaces that character head is rotated continuously and the dynamic digital image information of stepless zooming between the digital picture of each adjacent angle; Also can be that this that utilize that digital image processing techniques generate is replaced or replaces the image digitization model of character head, described image digitization model is that the digital image processing techniques generations such as digital picture process light tone adjustment that this are replaced or replace character head only have the image digitization model that this was replaced or replaced whole and local (comprising whole head and each face) the profile lines of character head, the present invention utilizes such image digitization model, not only help simplifying the replacement step between the character image, made things convenient for the head digital picture positional parameter that is replaced and replaces the role and between the obtaining of mathematic(al) manipulation parameter, and it is more accurate that match is replaced, and the digital video program works after the replacement are smooth more, true to nature.
Mathematic(al) manipulation matching algorithm among above-mentioned steps b, e, the f is a kind of pixel matching algorithm.Described pixel matching algorithm can be that (its English full name is: algorithm Critical PointFilter) abbreviates the CPF algorithm as in the critical point filtration.Briefly critical point filtration (CPF) algorithm is a kind of pixel matching algorithm that the rest image conversion can be generated as dynamic image, and this method can utilize the static digital picture of several of object to generate the dynamic digital image of this object at this object of continuous free of discontinuities (can't see the breakpoint between frame and the frame) variation between several the static digital pictures; Perhaps become the mathematic(al) manipulation parameter of multiple continuous dynamic digital image (to change by static digital service unit above-mentioned this object comprising this object three dimension angles between the digital picture of adjacent angle, size variation, the light tone degree changes, especially the mathematic(al) manipulation parameter of attitude and expression shape change) (preferably similar object is under the standard state of amimia no attitude to extract a static digital picture that applies to other similar object again, size, color, the positive static digital picture of the corresponding to width of cloth of light tone degree and former object), the static digital picture of this similar object (is changed comprising three dimension angles of digital picture according to the image change track of the defined former object of mathematic(al) manipulation function, size variation, the light tone degree changes, especially the track of attitude and expression shape change) match changes and generates the dynamic digital image that the continuous free of discontinuities of this similar object changes.It is a kind of prior art that (CPF) algorithm is filtered in critical point, and its concrete detailed transform method and principle of work and power does not repeat them here.
The storage medium that being used in described each step stored digital image information and mathematic(al) manipulation parameter can be disk or tape or CD or other memory electronic device.
The replacement method of a kind of digital video program character head of the present invention, it can be widely used in the making of video programs such as various multimedia movies, animation and after making.Its concrete application examples is as the old film renovation of: news documentary film (replacing old image or unsharp image in the old film with the role in the stale news documentary film or other object role's new images or picture rich in detail); Character image in video such as film and the TV program is replaced; Advertisement and the character image that reaches in the various dynamic clips are replaced; The replacement of images such as the personage in electron album or the dynamic portrait album, animal; The replacement of two in cartoon, computer network animation (comprising the flash animation) or the electronic game animation, three-dimensional animation image; Replacement of dynamic digital image or the like in Karaoke or the computing machine screen protection.And wherein role's digital picture not necessarily is the digital picture of personage's head, and the whole or local digital picture of any object (comprising people, animal, plant, cartoon moulding and various other object with anthropomorphic form) all can utilize image replacement method of the present invention to finish replacement.
In sum, the replacement method of a kind of digital video program character head of the present invention can be widely used in various any video programs with dynamic digital image, replace character image in the former video program according to user's wish with the digital picture of the object role with personal color, have personalized digital video program thereby generate.And above-mentioned embodiment of lifting; only be preferable practicing more of the present invention; when can not with qualification concrete enforcement of the present invention and range of application; promptly the equalization of being done according to claim scope of the present invention generally changes and modifies, and all should belong within the protection domain of patent of the present invention.
Claims (21)
1, a kind of replacement method of digital video program character head is characterized in that the step that comprises has:
A, the static digital image information that obtains and be stored in a plurality of angles that are replaced character head in the digital video program and definite this are replaced the step of character head digital picture positional parameter;
B, the static digital picture that is replaced a plurality of angles of character head in the above-mentioned digital video program that obtains and store is replaced the step of the digital picture of character head by dynamic this of the synthetic continually varying of mathematic(al) manipulation matching algorithm;
C, with the dynamic digital image that is replaced character head synthetic among the above-mentioned steps b, respectively with this each frame of video program in this digital picture that is replaced character head set up the step of corresponding mutually mathematic(al) manipulation parameter;
D, the step of obtaining and storing static digital image information and definite this replacement character head digital picture positional parameter of a plurality of angles of replacing character head;
E, with the static digital picture of a plurality of angles of the replacement character head of obtaining in the steps d and storing by the synthetic continually varying of the mathematic(al) manipulation matching algorithm step of the digital picture of this replacement character head dynamically;
F, with the digital image information of replacement character head synthetic among the step e, utilize among step a and the d determined this to be replaced the role and replace role's head digital picture positional parameter and step c in the mathematic(al) manipulation parameter set up, by the mathematic(al) manipulation matching algorithm generate with this each frame of video program in this is replaced the replacement image of the corresponding coupling of digital picture of character head, and carry out the step of role's replacement;
G, by storing the storage medium of finishing the video program after the role replaces, on display, carry out the step of played in order.
2, the replacement method of digital video program character head according to claim 1 is characterized in that:
Among described step a or the d, the static digital image information that is replaced or replaces a plurality of angles of character head can be that this is replaced or replaces character head at the static digital image information of looking squarely a plurality of angles in head front, rear, left and right obtained under the state.
3, the replacement method of digital video program character head according to claim 1 is characterized in that:
Among described step a or the d, the static digital image information that is replaced or replaces a plurality of angles of character head can be that this is replaced or replaces character head at the static digital image information of overlooking and look up a plurality of angles in head front, rear, left and right obtained under the state.
4, the replacement method of digital video program character head according to claim 1 is characterized in that:
Among described step a or the d, the static digital image information that is replaced or replaces a plurality of angles of character head can be the static digital image information of two dimensional surface, or the static digital image information of 3 D stereo.
5, the replacement method of digital video program character head according to claim 1 is characterized in that:
Among described step a or the d, the static digital image information that is replaced or replaces a plurality of angles of character head can be the static digital image information that portrait generated that is replaced or is replaced a plurality of angles of character head by this.
6, the replacement method of digital video program character head according to claim 1 is characterized in that:
Among described step a or the d, the determined head digital picture positional parameter that is replaced or replaces the role is meant that this is replaced or replaces the positional parameter of the whole or local digital picture of character head.
7, the replacement method of digital video program character head according to claim 1 is characterized in that:
Among described step a or the d, the determined head digital picture positional parameter that is replaced or replaces the role is meant the positional parameter of relative position between this digital picture that is replaced or replaces a plurality of angles of character head.
8, the replacement method of digital video program character head according to claim 1 is characterized in that:
Among described step b or the e, the continually varying dynamic digital image that is replaced or replaces character head that is synthesized is that this is replaced or replaces that character head is rotated continuously and the dynamic digital image information of stepless zooming between the digital picture of each adjacent angle.
9, the replacement method of digital video program character head according to claim 1 is characterized in that:
Among described step b or the e, the synthetic dynamic digital image that is replaced or replaces character head can be that this that utilize that digital image processing techniques generate is replaced or replaces the dynamic image of the image digitization model of character head.
10, the replacement method of digital video program character head according to claim 1 is characterized in that:
In step c, in the step about the mathematic(al) manipulation parameter of setting up mutual correspondence, further comprise:
C1, maybe this is replaced and extracts digital picture that a frame is replaced character head the static digital picture of a plurality of angles of character head as the original state reference picture and this original state reference picture that is replaced character head is marked especially from the described dynamic digital image that is replaced character head, with the former video program step of stored record in storage medium together; And
C2, the described dynamic digital image that is replaced character head therefrom intercepted out in a frame and the described digital video program n frame picture step of the corresponding to digital picture of angle of three dimensions of this digital picture that is replaced character head through the angular setting of three dimensions.
11, the replacement method of digital video program character head according to claim 10 is characterized in that:
According to above-mentioned steps c2, in step c, in the step about the mathematic(al) manipulation parameter of setting up mutual correspondence, further comprise:
This frame that is intercepted among c3, the mathematic(al) manipulation parameter of setting up in this frame of digital image of being intercepted among the above-mentioned steps c2 and the described video program n frame this digital picture that is replaced character head corresponding mutually size, light tone degree and attitude, expression and the determining step c2 is replaced the step of positional parameter corresponding location parameter in described video program n frame of character head digital picture.
12, the replacement method of digital video program character head according to claim 10 is characterized in that:
According to above-mentioned steps c1 and c2, in step c, in the step about the mathematic(al) manipulation parameter of setting up mutual correspondence, further comprise:
C4, determined original state reference picture among this frame of digital image that intercepted among the above-mentioned steps c2 and the step c1 is compared, set up in the digital picture that is replaced character head in this frame of digital image and the original state reference picture step of the mathematic(al) manipulation parameter of three corresponding mutually dimension angles variations of this digital picture that is replaced character head.
13, the replacement method of digital video program character head according to claim 1 is characterized in that:
In step c, in the step about the mathematic(al) manipulation parameter of setting up mutual correspondence, further comprise in the digital picture that is replaced character head that to be set up and described each frame of video program sequence number and the former video program of the corresponding mutually mathematic(al) manipulation parameter of this digital picture that is replaced character head, together the step of stored record in storage medium according to described each frame of video program.
14, the replacement method of digital video program character head according to claim 1 is characterized in that:
In step c, in the step about the mathematic(al) manipulation parameter of setting up mutual correspondence, comprise and to finish the step of setting up corresponding mutually mathematic(al) manipulation parameter respectively or simultaneously to a plurality of roles.
15, the replacement method of digital video program character head according to claim 1 is characterized in that:
In step c, in the step about the mathematic(al) manipulation parameter of setting up mutual correspondence, comprise two-dimensional digital image or three-dimensional digital image is set up the step of corresponding mutually mathematic(al) manipulation parameter.
16, the replacement method of digital video program character head according to claim 1 is characterized in that:
In step c, in the step about the mathematic(al) manipulation parameter of setting up mutual correspondence, further comprise:
C1, maybe this is replaced and extracts digital picture that a frame is replaced character head the static digital picture of a plurality of angles of character head as the original state reference picture and this original state reference picture that is replaced character head is marked especially from the described dynamic digital image that is replaced character head, with the former video program step of stored record in storage medium together;
C2, the described dynamic digital image that is replaced character head therefrom intercepted out in a frame and the described digital video program n frame picture step of the corresponding to digital picture of angle of three dimensions of this digital picture that is replaced character head through the angular setting of three dimensions;
This frame that is intercepted among c3, the mathematic(al) manipulation parameter of setting up in this frame of digital image of being intercepted among the above-mentioned steps c2 and the described video program n frame this digital picture that is replaced character head corresponding mutually size, light tone degree and attitude, expression and the determining step c2 is replaced the step of positional parameter corresponding location parameter in described video program n frame of character head digital picture;
C4, determined original state reference picture among this frame of digital image that intercepted among the above-mentioned steps c2 and the step c1 is compared, set up in the digital picture that is replaced character head in this frame of digital image and the original state reference picture step of the mathematic(al) manipulation parameter of three corresponding mutually dimension angles variations of this digital picture that is replaced character head;
According to above-mentioned steps c1, c2, c3, c4, in step f, in the treatment step about role's replacement, further comprise:
F1, extract the original state reference picture that be replaced character head of stored record in storage medium among the above-mentioned steps c1, the dynamic digital image of described replacement character head is therefrom extracted the digital picture that a frame and the above-mentioned original state reference picture that is replaced character head are complementary through the angular setting of three dimensions, this digital picture is defined as replacing the original state reference picture of character head, and to the size of this digital picture, the light tone degree, attitude, expression, and the positional parameter of the integral body of this replacement character head and topography is calibrated with reference to the described original state reference picture that is replaced character head, revise, and will calibrate with the corrected parameter extraction and be stored in step in the storage medium;
F2, utilize calibration and the corrected parameter stored among this synthetic among mathematic(al) manipulation parameter that three dimension angles being set up among the above-mentioned steps c4 change and the step e replacements character head continually varying dynamic digital image and the step f1, by the mathematic(al) manipulation matching algorithm original state reference picture of determined replacement character head among the above-mentioned steps f1 is generated and above-mentioned video program n frame in this be replaced the character head image three dimensions the corresponding to replacement image of angle and revise the step of this replacement integral image and local framing parameter;
Calibration and the corrected parameter stored among f3, the mathematic(al) manipulation parameter of utilizing size, light tone degree and the attitude set up among the above-mentioned steps c3, expression and the step f1, by the mathematic(al) manipulation matching algorithm with generated among the step f2 with video program n frame in this corresponding to replacement image of three dimension angles that is replaced the character head image generate with video program n frame in this step that is replaced size, light tone degree and attitude, the replacement image that expression is complementary of character head image and revises this replacement integral image and local framing parameter;
F4, utilize the replacement image and this replacement integral image of correction and the positional parameter of topography that generate among the step f3, and the positional parameter of determining among the step c3 that is replaced the whole and local digital picture of character head corresponding location parameter in described video program n frame is replaced the step that the role replaces in to this frame.
17, the replacement method of digital video program character head according to claim 1 is characterized in that:
In step f, in the treatment step of replacing about the role, respective background is carried out the image outline border and is blocked the step of situation processing in the replacement image that comprises the replacement character head that will be generated and the described video program.
18, the replacement method of digital video program character head according to claim 1 is characterized in that:
In step f, in the treatment step about role's replacement, comprise and to finish the step of replacing or finishing replacement simultaneously respectively to a plurality of roles.
19, the replacement method of digital video program character head according to claim 1 is characterized in that:
In step f, in the treatment step of replacing about the role, comprise replacement conversion to two-dimensional digital image, or to the step of the replacement conversion of three-dimensional digital image.
20, according to the replacement method of claim 1 or 16 described digital video program character head, it is characterized in that:
Mathematic(al) manipulation matching algorithm among described step b, e, the f is a kind of pixel matching algorithm.
21, the replacement method of digital video program character head according to claim 20 is characterized in that:
Described pixel matching algorithm can be that (CPF) algorithm is filtered in critical point.22, according to the replacement method of any one described digital video program character head in the claim 1,13,16, it is characterized in that:
The storage medium that being used in described each step stored digital image information and mathematic(al) manipulation parameter can be disk or tape or CD or memory electronic device.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200410008616XA CN1311677C (en) | 2004-03-12 | 2004-03-12 | Substitute method of role head of digital TV. program |
| PCT/CN2005/000299 WO2005088966A1 (en) | 2004-03-12 | 2005-03-11 | Substitute method for role head of digital tv program |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200410008616XA CN1311677C (en) | 2004-03-12 | 2004-03-12 | Substitute method of role head of digital TV. program |
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| Publication Number | Publication Date |
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| CN1560795A true CN1560795A (en) | 2005-01-05 |
| CN1311677C CN1311677C (en) | 2007-04-18 |
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| CNB200410008616XA Expired - Fee Related CN1311677C (en) | 2004-03-12 | 2004-03-12 | Substitute method of role head of digital TV. program |
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| CN (1) | CN1311677C (en) |
| WO (1) | WO2005088966A1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101262916B (en) * | 2005-09-15 | 2010-12-08 | 株式会社电通 | Program adding system, and added program providing method |
| CN102196245A (en) * | 2011-04-07 | 2011-09-21 | 北京中星微电子有限公司 | Video play method and video play device based on character interaction |
| CN102447869A (en) * | 2011-10-27 | 2012-05-09 | 天津三星电子有限公司 | Role replacement method |
| CN103260036A (en) * | 2012-02-16 | 2013-08-21 | 卡西欧计算机株式会社 | Image processing apparatus, image processing method, storage medium and image processing system |
| CN103984738A (en) * | 2014-05-22 | 2014-08-13 | 中国科学院自动化研究所 | Role labelling method based on search matching |
| CN104657974A (en) * | 2013-11-25 | 2015-05-27 | 腾讯科技（上海）有限公司 | Image processing method and device |
| CN109936775A (en) * | 2017-12-18 | 2019-06-25 | 东斓视觉科技发展（北京）有限公司 | Publicize the production method and equipment of film |
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| JPH09219836A (en) * | 1996-02-14 | 1997-08-19 | Matsushita Electric Ind Co Ltd | Image information recording method and image compositing device |
| JPH09238301A (en) * | 1996-02-29 | 1997-09-09 | Toshiba Corp | Digital video editing method |
| DE19653071A1 (en) * | 1996-12-19 | 1998-06-25 | Thomson Brandt Gmbh | Method for replacing parts of a digitally coded image and device for carrying out the method |
| US6539099B1 (en) * | 1999-08-30 | 2003-03-25 | Electric Planet | System and method for visual chat |
| KR20010090308A (en) * | 2000-03-24 | 2001-10-18 | 박선은 | Method and system for substituting an actor's facial image with a client's facial image |
| US7334249B1 (en) * | 2000-04-26 | 2008-02-19 | Lucent Technologies Inc. | Method and apparatus for dynamically altering digital video images |
| US6771303B2 (en) * | 2002-04-23 | 2004-08-03 | Microsoft Corporation | Video-teleconferencing system with eye-gaze correction |
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2004
- 2004-03-12 CN CNB200410008616XA patent/CN1311677C/en not_active Expired - Fee Related
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2005
- 2005-03-11 WO PCT/CN2005/000299 patent/WO2005088966A1/en active Application Filing
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101262916B (en) * | 2005-09-15 | 2010-12-08 | 株式会社电通 | Program adding system, and added program providing method |
| CN102196245A (en) * | 2011-04-07 | 2011-09-21 | 北京中星微电子有限公司 | Video play method and video play device based on character interaction |
| CN102447869A (en) * | 2011-10-27 | 2012-05-09 | 天津三星电子有限公司 | Role replacement method |
| CN103260036A (en) * | 2012-02-16 | 2013-08-21 | 卡西欧计算机株式会社 | Image processing apparatus, image processing method, storage medium and image processing system |
| CN103260036B (en) * | 2012-02-16 | 2015-06-17 | 卡西欧计算机株式会社 | Image processing apparatus, image processing method, storage medium and image processing system |
| CN104657974A (en) * | 2013-11-25 | 2015-05-27 | 腾讯科技（上海）有限公司 | Image processing method and device |
| WO2015074476A1 (en) * | 2013-11-25 | 2015-05-28 | 腾讯科技（深圳）有限公司 | Image processing method, apparatus, and storage medium |
| CN103984738A (en) * | 2014-05-22 | 2014-08-13 | 中国科学院自动化研究所 | Role labelling method based on search matching |
| CN109936775A (en) * | 2017-12-18 | 2019-06-25 | 东斓视觉科技发展（北京）有限公司 | Publicize the production method and equipment of film |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1311677C (en) | 2007-04-18 |
| WO2005088966A1 (en) | 2005-09-22 |
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