CN1207914C - Image processor image transmitting method and program - Google Patents
Image processor image transmitting method and program Download PDFInfo
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- CN1207914C CN1207914C CNB021575215A CN02157521A CN1207914C CN 1207914 C CN1207914 C CN 1207914C CN B021575215 A CNB021575215 A CN B021575215A CN 02157521 A CN02157521 A CN 02157521A CN 1207914 C CN1207914 C CN 1207914C
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Abstract
The invention relates to an image processor transmitting picture data shown on a display to outer set. The image processor comprises a capturing portion dividing the picture data into a plurality of capturing regions to capture the pictures in turn, based on a preset captured amount; a data compressing portion compressing the captured data obtained by the capturing portion; changing the said captured amount, therefore the compressed data from the data compressing portion in the above each captured region forming a captured-region setting portion.
Description
Technical field
The present invention relates to image processing apparatus and image sending method, particularly relate to image processing apparatus and image sending method that letter is joined in the multileaving of carrying out the pictorial data that shows on the display.
Background technology
The system that letter is joined in the multileaving of carrying out the pictorial data that shows on the display is by packet communication, utilizes to send identical data and join one of communication system to the multileaving of a plurality of nodes.Join in the communication system in this multileaving, catch the pictorial data that for example on the picture of personal computer (PC), shows, the processing of carrying out so-called its pictorial data that captures of compression and on network, sending.Usually, in order correctly to send pictorial data,, when the data of expanding after compressing, utilize the invertibity compress mode that returns to previous status fully as the compress mode of data.
In the compression algorithm of invertibity compress mode, usually, resemble under the situation of the simple pattern that constitutes by character and figure etc. the desk-top pictures such as PC, can obtain high compression rate, but under the situation that resembles the such complicated image of the image (natural image) that obtains from scanning device and digital camera etc., compression ratio is with regard to step-down.Therefore, send under the situation of the picture (pictorial data) be mixed with natural image, send to data volume on the network just in that part of increase of natural image part and compression ratio step-down by what catch for 1 time.Usually, in network, the maximum size that can send simultaneously is fixed, once under the situation of the data volume of Fa Songing above the upper limit of its network, just exists loss of data (transmitting the loss of data) takes place, and can not reproduce data conditions well the recipient.
Therefore, disclose to be designed to limit and caught the interval, thereby kept the scheme of specified transfer rate according to the data volume adjustment that sends.But under this situation, from the short time (cycle), then being captured in by 1 time has a lot of data volumes to flow on the network in the transmission, just elongated to the time of catching (catch at interval) next time, and the fault of the successively reproducing on the recipient just takes place its result.
In addition,, just send by the data of reading accumulation on a small quantity at every turn in case also there is transmit leg to accumulate the data that send to network, irrelevant with the data volume after the compression, exist the data volume that sends on the network to keep certain method.But, join in the communication system in the multileaving of PC picture, require the real-time of frame updating, therefore can not adopt this method.
Except above-mentioned points, for example the spy opens disclosed image processing apparatus in the 2001-128046 communique, it calculates the data volume that can send to external device (ED) in the time for exposure, the decision compression ratio is so that the data volume after the compression is identical with above-mentioned data volume, based on this determined compression ratio compressed image data, be sent to external device (ED).But, at this moment, when compression comprises the image-region of natural image,, when therefore on the recipient, reproducing data, the possibility that produces faults such as loss of data is arranged in order to decide compression ratio based on the data volume that can be sent to external device (ED).
In addition, in the non reversibility compress mode, also there is the algorithm press high compression rate compression natural image, but owing to be not reversible, so can not 100% on recipient (reproduction side) correctly reproduces original PC picture.
Guarantee that the data volume that sends to network simultaneously is not too big, and send a certain amount of data at regular intervals as far as possible to network, just can carry out stable reproduction the recipient.But, the device of realizing above-mentioned transmission is not provided even to this day particularly.
Summary of the invention
For solving above-mentioned each problem, the purpose of this invention is to provide a kind of image processing apparatus and image sending method, prevent the loss of data (data degradation) when sending of the pictorial data that comprises natural image that shows on the display, by always keeping sending data transfer rate definitely, provide stable reproducibility the recipient.
In order to achieve the above object, the described invention of claim 1 is the image processing apparatus that the pictorial data that will show on the display sends to external device (ED), it is characterized in that, comprise:, above-mentioned pictorial data is divided into the acquisition equipment that a plurality of capture regions also obtain picture successively based on the quantity of the catch of having set; Compress the compression set of the pictorial data of obtaining by above-mentioned picture acquisition equipment respectively; Change above-mentioned quantity of the catch, so that become the capture region setting device of certain value in above-mentioned each capture region by the data volume of above-mentioned compression set compression, above-mentioned capture region setting device surpasses under the situation of pre-set threshold in the data volume by above-mentioned compression set compression, dwindles above-mentioned quantity of the catch.
The described invention of claim 2 is the image processing apparatus that the pictorial data that will show on the display sends to external device (ED), it is characterized in that, comprise:, above-mentioned pictorial data is divided into the acquisition equipment that a plurality of capture regions are also obtained picture successively based on the quantity of the catch of having set; Compress the compression set of the pictorial data that is taken into by above-mentioned picture acquisition equipment respectively; Change above-mentioned quantity of the catch, so that become the capture region setting device of certain value in above-mentioned each capture region by the data volume of above-mentioned compression set compression, compression ratio in the capture region that above-mentioned capture region setting device was caught with the last time is a benchmark, compression ratio in the capture region of this time catching is by a certain percentage during step-down, just dwindle the quantity of the catch of setting in the capture region of next time catching, on the other hand, under the situation that compression ratio in the capture region of this time catching raises by a certain percentage, just enlarge the quantity of the catch of setting in the capture region of next time catching.
The described invention of claim 3 is characterised in that, comprising: the quantity of the catch according to appointment is divided into a plurality of capture regions with the pictorial data that shows on the display, respectively the 1st step that sends to external device (ED); With above-mentioned view data each the 2nd step of compressing in turn by above-mentioned a plurality of capture regions; It is the zone of the natural image that comprises that compression ratio reduces that the capture region that data volume after the above-mentioned compression is surpassed pre-set threshold is judged to be, and just dwindles the 3rd step of the quantity of the catch in the capture region next time of then this capture region compression.
The described invention of claim 4 is characterized in that, comprising: the quantity of the catch according to appointment is divided into a plurality of capture regions with the pictorial data that shows on the display, respectively the 1st step that sends to external device (ED); The 2nd step that above-mentioned view data is compressed in turn by each above-mentioned a plurality of capture region; The 3rd step of the compression ratio of the last capture region of catching of storage; With above-mentioned compression ratio of having stored is benchmark, when the compression ratio of the capture region of this time catching reduces by a certain percentage, dwindle the quantity of the catch in the capture region next time, on the other hand, when this time the compression ratio of capture region raises according to a certain percentage, enlarge the 4th step of the quantity of the catch in the capture region next time.
Among above-mentioned the present invention, become a plurality of capture regions to catch the PC picture segmentation, compress the data that it captures again respectively, change quantity of the catch,, just solved above-mentioned problem so that the data transfer rate that sends to external device (ED) becomes necessarily by quantity of the catch by appointment.For example, comprise the situation of the capture region of natural image, because compression ratio descends, data volume increases, and therefore just dwindles quantity of the catch.Like this, just irrelevant by changing quantity of the catch with having or not of natural image, and the data volume after the compression of each capture region is roughly certain.Therefore, among the present invention, can prevent because of regularly send the loss of data (packet loss etc.) that lot of data causes quickly by certain.In addition, the data transfer rate (data conveying capacity) during owing to transmission is total to keep certain, so can realize recipient's fault-free reproduction.
The simple declaration of accompanying drawing
Fig. 1 is the basic conception figure that image of the present invention sends processing method.
Fig. 2 is the concise and to the point formation block diagram that the image processing apparatus of one embodiment of the present of invention is shown.
Fig. 3 illustrates the flow chart that the capture region of carrying out in the image processing apparatus is shown in figure 2 set a program of handling.
Fig. 4 (a) is the coordinate diagram that writes at interval (sending at interval) and data volume that illustrates in the existing mode.
Fig. 4 (b) is the coordinate diagram that writes at interval (sending at interval) and data volume that illustrates under the situation that is suitable for image compress processing method of the present invention.
Embodiment
Below, with reference to accompanying drawing embodiments of the invention are described.
Fig. 1 is the basic conception figure that is used to illustrate the image sending method of one embodiment of the present of invention.In this image sending method, the viewing area on the display is divided into for example banded a plurality of capture region D1～D6, begin to catch in turn and compress the view data that it captures from capture region D1.Among Fig. 1, D1 '～D6 ' compresses the data that obtain after catching capture region D1～D6 respectively.In the part of capture region D3～D6, comprise natural image P.Compress mode invertibity compress mode.
By changing the amount (quantity of the catch) of capture region D1～D6,, realize recipient's stable reproduction so that the data transfer rate that sends to external device (ED) becomes necessarily.Specifically, see exactly whether the data volume after the compression is bigger than the amount (boundary number) of regulation, judge whether to comprise natural image, just dwindle quantity of the catch under the situation that comprises natural image being judged as.At this, so-called boundary number is the possible datum quantity of the amount of the amount of the packed data (for example packed data D1 ') of distinguishing the capture region that does not comprise natural image and the packed data (for example packed data D3 ') that comprises the capture region of natural image.Because the difference according to compression ratio has basically
The amount of the amount of packed data D1 '＜packed data D3 '
Relation, so boundary number preferably is set at centre (border) value of this tittle.
Below, with reference to Fig. 1 the change of quantity of the catch is described particularly.
At first, catch capture region D1, compress the view data that this captures, generate packed data D1 '.Then, judge whether the amount of packed data D1 ' of this generation is bigger than boundary number.Because capture region D1 is the zone that does not comprise natural image P, by the high compression rate compression, so the amount of packed data D1 ' is littler than boundary number.Therefore, the amount that this situation just is judged as packed data D1 ' is littler than boundary number, does not carry out the change of the quantity of the catch of capture region D2.Its result, the quantity of the catch of capture region D2 just is set to the amount identical with capture region D1.
Then, catch capture region D2, compress the view data that this captures, generate packed data D2 '.Then, judge whether the amount of packed data D2 ' of this generation is bigger than boundary number.Because capture region D2 also is the zone that does not comprise natural image P, by the high compression rate compression, so the amount of packed data D2 ' is littler than boundary number.Therefore, this situation is not also carried out the change of the quantity of the catch of capture region D2, and the quantity of the catch of capture region D3 just is set to the amount identical with capture region D1.
Then, catch and the identical capture region D3 of capture region D1 size, compress the view data that this captures, generate packed data D3 '.Then, judge whether the amount of packed data D3 ' of this generation is bigger than boundary number.Because capture region D3 is the zone that comprises natural image P, compress by little compressible, so the amount of packed data D3 ' is bigger than boundary number.Therefore, the amount that this situation just is judged as packed data D3 ' is bigger than boundary number, dwindles the quantity of the catch of capture region D4, so that the data volume after the compression becomes littler than boundary number.Its result, the quantity of the catch of capture region D4 just becomes the amount littler than capture region D3.
Then, catch capture region D4, compress the pictorial data that this captures, generate packed data D4 '.Then.Whether the amount of packed data D4 ' of judging this generation is bigger than boundary number.Because capture region D4 is the zone that comprises natural image P, compress by little compressible, still dwindled the state of quantity of the catch, the data volume after the compression has diminished, so the quantitative change of packed data D4 ' must be littler than boundary number.Therefore, the amount that this situation just is judged as packed data D4 ' is littler than boundary number, does not just carry out the change of the quantity of the catch of capture region D5.Its result, the quantity of the catch of capture region D5 becomes the amount identical with capture region D4.
For capture region D5, D6, carry out the processing identical with the situation of above-mentioned capture region D4, therefore omit its explanation at this.
As mentioned above, in the image sending method of present embodiment, if it is bigger than boundary number to recognize amount of compressed data, just predict and comprise natural image in the capture region, from catching next time, dwindle quantity of the catch than present quantity of the catch, so that the data volume after the compression is littler than boundary number.Like this, utilize to change capture region, send to situation on the network, avoid thing followed loss of data, realize the stable data transmission with regard to the mass data that prevents to happen suddenly so that amount of compressed data becomes necessarily.
Have again, in the example shown in Fig. 1, the viewing area is divided into banded capture region D1～D6, but the invention is not restricted to this.For example, also the viewing area can be divided into rectangularly, carry out same processing.In addition, do not make particular determination yet, and can use for example CRT monitor, LCD, plasma display etc. for display.
Fig. 2 is the concise and to the point formation block diagram that the image processing apparatus of the image sending method that is suitable for above-mentioned present embodiment is shown.Image processing apparatus 100 by picture catch portion 1, data compression portion 2, capture region configuration part 3, data sending part 4, data boundary storage part 5, and capture region storage part 6 constitute.
As the boundary number of benchmark, according to the request from capture region configuration part 3, the data that send this boundary number were to capture region configuration part 3 when data boundary storage part 5 was stored the change quantity of the catch in advance.Capture region storage part 6 is stored the capture region information that comprises quantity of the catch (default value) in advance.
Picture is caught portion 1 and is read the information in the zone that catch from capture region storage part 6, according to this appointed zone of information capture picture of reading.Catch the pictorial data that portion 1 catches by this picture and supplied with image compression portion 2 and capture region configuration part 3 respectively.
The boundary number by storage in the amount of compressed data of data compression portion 2 generations and the data boundary storage part 5 is compared in capture region configuration part 3, under the amount of compressed data situation bigger than boundary number, quantity of the catch is diminished.In addition, amount of compressed data is than under the little situation of boundary number, compression ratio is obtained according to the pictorial data amount of catching portion's 1 supply from picture with from data compression portion 2 compressed and supplied data in capture region configuration part 3, this compression ratio of obtaining be with the equal situation of standard compression rate (compression ratio of standard in the PC picture) under, recover quantity of the catch to commercial weight (default value).Along with this change, change the quantity of the catch of the capture region information of storage in the capture region storage part 6 according to the quantity of the catch of capture region configuration part 3.The standard compression rate is stored in the data boundary storage part 5 in advance.
Have again, though do not specifically illustrate among Fig. 2, but have ROM as primary storage, as the RAM of auxiliary storage, and CPU, CPU is when reading the operation control program that is stored in advance among the ROM, by control the action of above-mentioned each component part as the computing zone with RAM.
Fig. 3 is the flow chart that a program of the capture region setting processing in the image processing apparatus shown in Fig. 2 is shown.Below, with reference to Fig. 2 and Fig. 3 capture region setting processing is described.
At first, step S1, picture catch the capture region information (default value) that portion 1 reads storage in the capture region storage part 6, based on this capture region information that reads, catch the designated zone (capture region) of PC picture.This pictorial data that captures is caught portion 1 and is supplied with data compression portion 2 and capture region configuration part 3 respectively from picture.
Then, step S2, the data of catching of portion's 1 supply are caught in 2 compressions of data compression portion by picture.This packed data is supplied with capture region configuration part 3 and data sending part 4 respectively.
Then, step S3, the boundary number that whether surpasses storage the data boundary storage part 5 from data compression portion 2 compressed and supplied data volumes is judged in capture region configuration part 3.
The situation that is judged to be "Yes" of above-mentioned steps S3 is just then carried out step S4, and capture region configuration part 3 judges whether the quantity of the catch of storage in capture region storage part 6 is the minimum of predesignating.This situation that is judged to be "Yes" just turns back to step S1, catches portion 1 by picture and catches following capture region.This situation that is judged to be "No" is just then carried out step S5, and capture region configuration part 3 dwindles the quantity of the catch from next time.In data boundary storage part 5, capture region configuration part 3 uses these ratio values to dwindle quantity of the catch to the ratio value of situation that dwindles quantity of the catch by pre-defined.Dwindled under the situation of quantity of the catch, its quantity of the catch that has dwindled is set in the capture region storage part 6.After quantity of the catch dwindles, turn back to step S1, picture is caught portion 1 and is set following capture region according to the quantity of the catch that resets in the capture region storage part 6 (amount after dwindling), catches its capture region.
Under the situation that is judged to be "No" of above-mentioned steps S3, use step S6, capture region configuration part 3 judge compression ratios whether with standard compression rate equal (step S6).This situation that is judged to be "Yes" is just then carried out step S7, and quantity of the catch is recovered to commercial weight (default value) in capture region configuration part 3.Therefore, the set point of the quantity of the catch of capture region storage part 6 just returns to default value.Have again, for example, catch successively under the situation of the capture region D1 shown in Fig. 1, D2, owing to do not carry out dwindling of quantity of the catch, so the set point of the quantity of the catch of capture region storage part 6 is just kept default value.
Carry out the capture region of above-mentioned steps S1～S7 in each capture region and set processing, the packed data of each capture region is sent on the network 200 from data sending part 4.
Fig. 4 (a) illustrates and writing at interval (sending at interval) and data volume in the existing mode, Fig. 4 (b) illustrate the image compress processing method that is suitable for present embodiment situation write at interval (sending at interval) and data volume.Can find out from Fig. 4, in the existing mode, comprise the outstanding data volume that 1 time of capture region of natural image writes.To this, under the situation of the image compress processing method of suitable present embodiment, so that the transmission data transfer rate is roughly certain, shorten at interval and write by changing quantity of the catch, just can transmit continuously.Therefore, in the reproduction continuously that realizes the recipient, join the real-time that can realize requested frame updating in the communication system in multileaving.
More than Shuo Ming image processing apparatus of the present invention is an embodiment, and its formation and operation can be made in the scope that does not break away from purport of the present invention suitably and change.For example, can not preestablish data boundary, and according to changing quantity of the catch with the difference of the compression ratio of last time.Under this situation, the last compression ratio of storage is just dwindled quantity of the catch under the situation that compression ratio reduces by certain certain proportion in advance, on the contrary, also can just enlarge quantity of the catch under the situation that compression ratio raises by certain certain proportion.The ratio of dwindling and enlarging equal from the compression after the data volume inverse operation, reach the value that can send data by roughly certain transfer rate and obtain.
In addition, image processing apparatus of the present invention is a prerequisite multileaving is joined letter is suitable for, but system in addition, for example can connect the system that a plurality of computers communicate and also can be suitable for.
Can be clear and definite according to above explanation, according to the present invention, the view data that shows on display is caught and when compressing, even the situation that the data volume after compression has increased, also can dwindle, and on network, send by roughly certain data volume by making from capture region next time.Thereby, when always realizing sending data, can prevent possibly that the mass data that happens suddenly from flowing to network and the loss of data that causes according to certain data transfer rate.
In addition, according to the present invention, owing to can judge whether capture region comprises natural image based on boundary number, therefore when the amount that the capture region that comprises natural image is dwindled in utilization prevents that the mass data that happens suddenly from flowing to the situation of network, roughly a certain amount of data of utilizing transport net at regular intervals to allow just can realize the reproduction processes of recipient's real-time.
Claims (4)
1. image processing apparatus, be the pictorial data that will show on the display to the image processing apparatus that external device (ED) sends, it is characterized in that,
Comprise:
Based on the quantity of the catch of having set, above-mentioned pictorial data is divided into the picture acquisition equipment that a plurality of capture regions are also obtained successively;
Compress the compression set of the pictorial data that is taken into by above-mentioned picture acquisition equipment respectively;
Change above-mentioned quantity of the catch, so that become the capture region setting device of certain value in above-mentioned each capture region by the data volume of above-mentioned compression set compression, above-mentioned capture region setting device surpasses under the situation of pre-set threshold in the data volume by above-mentioned compression set compression, dwindles above-mentioned quantity of the catch.
2. image processing apparatus, be the pictorial data that will show on the display to the image processing apparatus that external device (ED) sends, it is characterized in that,
Comprise:
Based on the quantity of the catch of having set, above-mentioned pictorial data is divided into the picture acquisition equipment that a plurality of capture regions are also obtained successively;
Compress the compression set of the pictorial data that is taken into by above-mentioned picture acquisition equipment respectively;
Change above-mentioned quantity of the catch, so that become the capture region setting device of certain value in above-mentioned each capture region by the data volume of above-mentioned compression set compression,
Compression ratio in the capture region that above-mentioned capture region setting device was caught with the last time is a benchmark, when the compression ratio in the capture region of this time catching reduces by a certain percentage, dwindle the quantity of the catch of setting in the capture region of next time catching, on the other hand, when the compression ratio in the capture region of this time catching raises by a certain percentage, enlarge the quantity of the catch of setting in the capture region that next time is taken into.
3. an image sending method is characterized in that, comprising:
Quantity of the catch according to appointment is divided into a plurality of capture regions with the pictorial data that shows on the display, respectively the 1st step that sends to external device (ED);
With above-mentioned view data each the 2nd step of compressing in turn by above-mentioned a plurality of capture regions;
It is the zone of the natural image that comprises that compression ratio reduces that the capture region that data volume after the above-mentioned compression is surpassed pre-set threshold is judged to be, and just dwindles the 3rd step of the quantity of the catch in the capture region of next time catching of then this capture region compression.
4. an image sending method is characterized in that, comprising:
Quantity of the catch according to appointment is divided into a plurality of capture regions with the pictorial data that shows on the display, respectively the 1st step that sends to external device (ED);
The 2nd step that above-mentioned view data is compressed in turn by each above-mentioned a plurality of capture region;
The 3rd step of the compression ratio of the last capture region of catching of storage;
With above-mentioned compression ratio of having stored is benchmark, when the compression ratio of the capture region of this time catching reduces by a certain percentage, dwindle the quantity of the catch in the capture region of next time catching, on the other hand, with above-mentioned compression ratio of having stored is benchmark, when the compression ratio of the capture region of this time catching raises according to a certain percentage, enlarge the 4th step of the quantity of the catch in the capture region of next time catching.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP323981/2001 | 2001-10-22 | ||
| JP2001323981A JP2003134342A (en) | 2001-10-22 | 2001-10-22 | Picture processor, and method therefor and program thereof |
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| Publication Number | Publication Date |
|---|---|
| CN1424854A CN1424854A (en) | 2003-06-18 |
| CN1207914C true CN1207914C (en) | 2005-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021575215A Expired - Fee Related CN1207914C (en) | 2001-10-22 | 2002-10-22 | Image processor image transmitting method and program |
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| Country | Link |
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| JP (1) | JP2003134342A (en) |
| CN (1) | CN1207914C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106326326A (en) * | 2016-06-07 | 2017-01-11 | 武汉科技大学 | Picture caching optimization method in Android system |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060073040A (en) * | 2004-12-24 | 2006-06-28 | 삼성전자주식회사 | Display apparatus and control method therof |
| JP2008311831A (en) * | 2007-06-13 | 2008-12-25 | Panasonic Corp | Moving image communication equipment, moving image communication system, and semiconductor integrated circuit for moving image communication |
| JP5171655B2 (en) * | 2009-01-09 | 2013-03-27 | キヤノン株式会社 | Image transmitting apparatus, method, and storage medium |
| JP5535546B2 (en) | 2009-08-10 | 2014-07-02 | ルネサスエレクトロニクス株式会社 | Display device and driver |
| JP6250899B2 (en) * | 2015-08-26 | 2017-12-20 | ファナック株式会社 | Injection molding system |
-
2001
- 2001-10-22 JP JP2001323981A patent/JP2003134342A/en active Pending
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106326326A (en) * | 2016-06-07 | 2017-01-11 | 武汉科技大学 | Picture caching optimization method in Android system |
| CN106326326B (en) * | 2016-06-07 | 2019-08-16 | 武汉科技大学 | A kind of image cache optimization method in android system |
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| Publication number | Publication date |
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| CN1424854A (en) | 2003-06-18 |
| JP2003134342A (en) | 2003-05-09 |
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