CN103634519A - Image display method and device based on dual-camera head - Google Patents
Image display method and device based on dual-camera head Download PDFInfo
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Abstract
The invention embodiment discloses an image display method and device based on dual-camera head, and belongs to the image processing field. The method comprises the steps of: respectively adjusting the angle and depth of field of the two camera-heads on one plane, so the shooting range of the two camera-heads are adjacent in a target scene; respectively combining and splicing the video frames collected by the two camera-heads under the control of a synchronical signal, thereby obtaining a corresponding broad width video in the target scene; while switching the broad width video into a stereo video, the angles of the two camera-heads are respectively adjusted, so the shooting ranges of the two camera-heads are same in the target scene; under the control of the synchronical signal, respectively registering and reconstructing the video frames collected by the two camera-heads, thereby obtaining the corresponding stereo video in the target scene. The two camera-heads are employed to respectively collect videos, and combining the collected video frames to obtain the broad width video, and carrying out switching between the broad width video and three dimensional video acquisition when the three dimensional video is outputted.
Description
Technical field
The present invention relates to image processing field, relate in particular to a kind of method for displaying image and device based on dual camera.
Background technology
The width larger video of wide cut video for adopting a plurality of frame of video to combine, it possesses larger display size, the wider visual field, more displaying contents, higher display resolution and has more impulsive force and the visual effect of feeling of immersion than common standard projection system.
For wide cut video, prior art cannot realize direct collection, often adopts camera collection twice, then the frame of video of twice collection is synthesized to a secondary frame of video.When gathering, need continuous acquisition, limit gathers frame of video limit frame of video is synthesized to wide cut frame of video.
In addition, three-dimensional video-frequency is a kind of mode of novel description three-dimensional world, and it not only comprises the surface information about scene of conventional two-dimensional video, but also comprises the 3 D stereo information relevant to scene particular location.Compare with traditional two-dimensional video, three-dimensional video-frequency be a kind of more effectively, more real expression way.
At present, prior art also cannot be carried out the switching between wide cut video and three-dimensional video acquisition, cannot, when not needing the wide cut video gathering, be directly output as 3 D video.
Summary of the invention
Embodiments of the invention provide a kind of method for displaying image and device based on dual camera, by adopting two cameras to gather respectively video, then the frame of video collecting is synthesized, obtain wide cut video, and carry out the switching between wide cut video and three-dimensional video acquisition when output 3 D video.
For achieving the above object, adopt following technical scheme:
A method for displaying image based on dual camera, comprises the steps:
In same plane, adjust respectively angle and the depth of field of two cameras, make the coverage of two cameras in target scene adjacent;
Under the control of synchronizing signal, by two camera collections to frame of video synthesize respectively splicing, thereby obtain in target scene corresponding wide cut video;
When described wide cut video switch is three-dimensional video-frequency, adjust respectively the angle of two cameras, make the coverage of two cameras in target scene identical;
Under the control of synchronizing signal, by two camera collections to frame of video carry out respectively registration reconstruct, thereby obtain in target scene corresponding three-dimensional video-frequency.
Preferably, described by two camera collections to frame of video synthesize respectively when splicing, the lap of two frame of video corresponding to two cameras is carried out to Fusion Edges.
Preferably, described by two camera collections to frame of video while carrying out registration reconstruct respectively, by the alternately output frame by frame respectively of two groups of frame of video, form three-dimensional video-frequency.
Preferably, it is described when described wide cut video switch is three-dimensional video-frequency, while adjusting respectively the angle of two cameras, the pixel value that each pixel in the frame of video of picked-up is corresponding carries out Boolean calculation, when the result of Boolean calculation is close to zero, the coverage of two cameras in target scene is identical.
The invention also discloses a kind of image display device based on dual camera, comprise as lower module:
Adjusting module is adjusted respectively angle and the depth of field of two cameras in same plane, makes the coverage of two cameras in target scene adjacent,
Widescreen video module, under the control of synchronizing signal, by two camera collections to frame of video synthesize respectively splicing, thereby obtain in target scene corresponding wide cut video;
Modular converter, when described wide cut video switch is three-dimensional video-frequency, adjusts respectively the angle of two cameras, makes the coverage of two cameras in target scene identical;
Three-dimensional video-frequency module, under the control of synchronizing signal, by two camera collections to frame of video carry out respectively registration reconstruct, thereby obtain in target scene corresponding three-dimensional video-frequency.
Preferably, described widescreen video module by two camera collections to frame of video synthesize respectively when splicing, the lap of two frame of video corresponding to two cameras is carried out to Fusion Edges.
Preferably, described three-dimensional video-frequency module, by the alternately output frame by frame respectively of two groups of frame of video, forms three-dimensional video-frequency.
Preferably, described modular converter carries out Boolean calculation by pixel value corresponding to each pixel in the frame of video of picked-up, and when the result of Boolean calculation is close to zero, the coverage of two cameras in target scene is identical.
A kind of method for displaying image and device based on dual camera that the embodiment of the present invention provides, by adopting two cameras to gather respectively video, then the frame of video collecting is synthesized, obtain wide cut video, and carry out the switching between wide cut video and three-dimensional video acquisition by adjusting when the angle of camera can realize output 3 D video, convenient and swift.
Accompanying drawing explanation
The flow chart of a kind of method for displaying image based on dual camera that Fig. 1 provides for the embodiment of the present invention one;
The schematic diagram that Fig. 2 splices for two frame of video that the embodiment of the present invention one provides;
The modular structure figure of a kind of image display device based on dual camera that Fig. 3 provides for the embodiment of the present invention two.
Embodiment
Below in conjunction with accompanying drawing, a kind of method for displaying image and device based on dual camera of the embodiment of the present invention is described in detail.
Embodiments of the invention one disclose a kind of method for displaying image based on dual camera, as shown in Figure 1, comprise the steps:
In the present embodiment, original input picture is 60Hz entire image, adjusts angle and the depth of field of two cameras, makes camera take respectively the coverage of 145 degree current scene of human eye observation.
In the present embodiment, two frame of video are carried out to panoramic picture by sequence similarity detected image stitching algorithm and synthesize, be about to the total part of two two field pictures and excise, distortion angle image is repaired simultaneously.
As shown in Figure 2, in the present embodiment, the frame of video of two camera collections is made as to the first frame of video and the second frame of video, the region of choosing the upper left corner 40*40 of the second frame of video is designated as registration template S, size is K*L, and using the first frame of video as being designated as region W to be searched, size is M*N.
The upper left corner of selecting S during coupling is datum mark, current point to be matched be positioned on W (u, while v) locating, in W, selected region to be matched is with point (u, v), (u, v+L-1), (u+K-1, v) and (u+K-1, v+L-1) region forming, the matching error of the point that is (i, j) with respect to datum mark is defined as:
e(u,v,i,j)=|S(i,j)-W(u+i,v+j)|
In the first frame of video and region to be matched, randomly draw n point (i
1, j
1) (i
2, j
2) ... (i
n, j
n), calculate fractional error and sequence that these points cause, be designated as:
By e and a preset threshold series Thresh(n who rule of thumb calculates) relatively, if e
s(u, v, k) >Thresh(k), finish calculating herein, and write down k, calculate the error at next point to be matched place, if e
s(u, v, k) <Thresh(k) continue to calculate the error of the next extraction point of locating at (u, v), until e
s(u, v, k) >Thresh(k) or k=n, write down k value.Different points to be matched is carried out to above-mentioned coupling calculating, finally get to be matched some position corresponding to maximum k value, think the match point that Here it is need to look for.
Find after the stitching position of frame of video of two cameras picked-ups, if simple superposition just there will be obvious border between two two field pictures, therefore, be necessary spliced image to merge, to obtain high-quality panorama sketch.
In the present embodiment, adopt the mode of bilinear interpolation value to merge respectively spliced frame of video, for the object pixel after merging, the floating-point coordinate obtaining by reciprocal transformation is (i+u, j+v), wherein, i, j are nonnegative integer, and u, v are [0,1) interval floating number, the pixel value f (i+u, j+v) of preliminary treatment rear video frame can coordinate be (i, j), (i+1 in original image, j), (i, j+1) and the value of (i+1, j+1) corresponding four pixels around determine, that is:
f(i+u，j+v)=(1-u)×(1-v)×f(i，j)+(1-u)×v×f(i,j+1)+u×(1-v)×f(i+1,j)+u×v×f(i+1,j+1)
Wherein, f (i, j) represents the pixel value that source images (i, j) that two camera collections arrive is located.
In the present embodiment, first according to the value of (0,0) and (1,0), linear interpolation goes out the value f (x, 0) of (x, 0), then according to the value of (0,1) and (1,1), linear interpolation goes out the value f (x, 1) of (x, 1), last according to the value of (x, 0) and (x, 1), linear interpolation goes out the value f (x, y) of (x, y).Under the control of synchronizing signal, the image after merging to be sent into internal storage location and carry out buffer memory, and read with the form of FIFO, the size of output image is after convergent-divergent 2 times of raw image data, thereby exports with wide cut image.
In other embodiments, also can first adopt the mode of bilinear interpolation value to carry out preliminary treatment to two frame of video, two frame of video are carried out to cutting, eliminate after the part of two frame of video coincidences, directly splice.
By CD-ROM drive motor, adjusted angle and the depth of field of two cameras, the scope that two cameras are taken is identical, in order to lower step, carries out stereo scene conversion.
Particularly, in the present embodiment, adopt laser determination target scene apart from the distance of two cameras, in conjunction with described distance and two camera spacing, adjust the angle of two cameras.
In other embodiments, the frame of video of dynamic monitoring two camera picked-ups, pixel value corresponding to pixel in the frame of video that is about to absorb carries out Boolean calculation, and when the result of Boolean calculation is close to zero, the coverage of two cameras in target scene is identical.
Under the control of synchronizing signal, the mode that adopts bilinear interpolation value by two camera collections to frame of video carry out respectively convergent-divergent.
For the object pixel after convergent-divergent, the floating-point coordinate obtaining by reciprocal transformation is (i+u, j+v), wherein, i, j are nonnegative integer, and u, v are [0,1) interval floating number, the pixel value f (i+u, j+v) of preliminary treatment rear video frame can coordinate be (i, j), (i+1 in original image, j), (i, j+1) and the value of (i+1, j+1) corresponding four pixels around determine, that is:
f(i+u，j+v)=(1-u)×(1-v)×f(i，j)+(1-u)×v×f(i,j+1)+u×(1-v)×f(i+1,j)+u×v×f(i+1,j+1)
Wherein, f (i, j) represents the pixel value that source images (i, j) that two camera collections arrive is located.
According to Ping-pong FIFO principle, two groups of frame of video after convergent-divergent are respectively after buffer memory, according to three-dimensional imaging principle stereoscopic image, synthesize, two cameras are taken the video image of the corresponding people's right and left eyes of frame of video difference obtaining, the pattern formation three-dimensional video-frequency that adopts two groups of frame of video alternately to export respectively, the first frame is output as left eye, the second frame is output as right eye, the 3rd frame is output as left eye ... also therefore, in special time, the frame of video that two cameras gather with synthetic after in the 3 D video of output the number of each frame of video equate.In the present embodiment, the input picture of two camera picked-ups is 60Hz, and the frame of video of output is 120Hz, and user is equipped with the anaglyph spectacles of 60Hz frequency, can watch the stereoeffect that exported 3 D video is corresponding, form the switching from wide cut video to 3 D video.
In like manner, by adjusting round about the angle of two cameras, and call corresponding processing procedure, can realize 3 D video to the switching of wide cut video, implementation procedure and above-mentioned steps process contrary, repeat no more.
The invention also discloses a kind of image display device based on dual camera, as shown in Figure 3, comprise as lower module:
Adjusting module 301 is adjusted respectively angle and the depth of field of two cameras in same plane, makes the coverage of two cameras in target scene adjacent,
Widescreen video module 302, under the control of synchronizing signal, by two camera collections to frame of video synthesize respectively splicing, thereby obtain in target scene corresponding wide cut video;
Modular converter 303, when described wide cut video switch is three-dimensional video-frequency, adjusts respectively the angle of two cameras, makes the coverage of two cameras in target scene identical;
Three-dimensional video-frequency module 304, under the control of synchronizing signal, by two camera collections to frame of video carry out respectively registration reconstruct, thereby obtain in target scene corresponding three-dimensional video-frequency.
Preferably, described widescreen video module by two camera collections to frame of video synthesize respectively when splicing, the lap of two frame of video corresponding to two cameras is carried out to Fusion Edges.
Preferably, described three-dimensional video-frequency module, by the alternately output frame by frame respectively of two groups of frame of video, forms three-dimensional video-frequency.
Preferably, described modular converter carries out Boolean calculation by pixel value corresponding to each pixel in the frame of video of picked-up, and when the result of Boolean calculation is close to zero, the coverage of two cameras in target scene is identical.
A kind of method for displaying image and device based on dual camera that the embodiment of the present invention provides, by adopting two cameras to gather respectively video, then the frame of video collecting is synthesized, obtain wide cut video, and carry out the switching between wide cut video and three-dimensional video acquisition by adjusting when the angle of camera can realize output 3 D video, convenient and swift.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited to this, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion by the described protection range with claim.
Claims (8)
1. the method for displaying image based on dual camera, is characterized in that, comprises the steps:
In same plane, adjust respectively angle and the depth of field of two cameras, make the coverage of two cameras in target scene adjacent;
Under the control of synchronizing signal, by two camera collections to frame of video synthesize respectively splicing, thereby obtain in target scene corresponding wide cut video;
When described wide cut video switch is three-dimensional video-frequency, adjust respectively the angle of two cameras, make the coverage of two cameras in target scene identical;
Under the control of synchronizing signal, by two camera collections to frame of video carry out respectively registration reconstruct, thereby obtain in target scene corresponding three-dimensional video-frequency.
2. method according to claim 1, is characterized in that: described by two camera collections to frame of video while synthesizing respectively splicing, the lap of two frame of video corresponding to two cameras is carried out to Fusion Edges.
3. method according to claim 1, is characterized in that: described by two camera collections to frame of video while carrying out registration reconstruct respectively, by the alternately output frame by frame respectively of two groups of frame of video, form three-dimensional video-frequency.
4. method according to claim 1, it is characterized in that: described when described wide cut video switch is three-dimensional video-frequency, while adjusting respectively the angle of two cameras, the pixel value that each pixel in the frame of video of picked-up is corresponding carries out Boolean calculation, when the result of Boolean calculation is close to zero, the coverage of two cameras in target scene is identical.
5. the image display device based on dual camera, is characterized in that, comprises as lower module:
Adjusting module is adjusted respectively angle and the depth of field of two cameras in same plane, makes the coverage of two cameras in target scene adjacent,
Widescreen video module, under the control of synchronizing signal, by two camera collections to frame of video synthesize respectively splicing, thereby obtain in target scene corresponding wide cut video;
Modular converter, when described wide cut video switch is three-dimensional video-frequency, adjusts respectively the angle of two cameras, makes the coverage of two cameras in target scene identical;
Three-dimensional video-frequency module, under the control of synchronizing signal, by two camera collections to frame of video carry out respectively registration reconstruct, thereby obtain in target scene corresponding three-dimensional video-frequency.
6. device according to claim 5, is characterized in that: described widescreen video module by two camera collections to frame of video while synthesizing respectively splicing, the lap of two frame of video corresponding to two cameras is carried out to Fusion Edges.
7. device according to claim 5, is characterized in that: described three-dimensional video-frequency module, by the alternately output frame by frame respectively of two groups of frame of video, forms three-dimensional video-frequency.
8. device according to claim 5, it is characterized in that: described modular converter carries out Boolean calculation by pixel value corresponding to each pixel in the frame of video of picked-up, when the result of Boolean calculation is close to zero, the coverage of two cameras in target scene is identical.
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| CN104363374A (en) * | 2014-11-28 | 2015-02-18 | 广东欧珀移动通信有限公司 | High-frame-rate video generation method and device and terminal |
| CN104735348A (en) * | 2015-01-30 | 2015-06-24 | 深圳市中兴移动通信有限公司 | Double-camera photographing method and system |
| CN104977795A (en) * | 2014-04-08 | 2015-10-14 | 立普思股份有限公司 | Stereo photography system and stereo photography method thereof |
| CN106331240A (en) * | 2016-10-26 | 2017-01-11 | 维沃移动通信有限公司 | Mobile terminal |
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| CN106559664A (en) * | 2015-09-30 | 2017-04-05 | 成都理想境界科技有限公司 | The filming apparatus and equipment of three-dimensional panoramic image |
| CN106961549A (en) * | 2017-03-03 | 2017-07-18 | 宇龙计算机通信科技(深圳)有限公司 | A kind of image pickup method and device based on dual camera |
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| CN107454327A (en) * | 2017-08-24 | 2017-12-08 | 北京臻迪科技股份有限公司 | Image processing method, device, system and equipment |
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