CN101656876A - Image quality processing device and image quality processing method - Google Patents
Image quality processing device and image quality processing method Download PDFInfo
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- CN101656876A CN101656876A CN200810213012A CN200810213012A CN101656876A CN 101656876 A CN101656876 A CN 101656876A CN 200810213012 A CN200810213012 A CN 200810213012A CN 200810213012 A CN200810213012 A CN 200810213012A CN 101656876 A CN101656876 A CN 101656876A
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Abstract
The invention discloses an image quality processing device and an image quality processing method. The image quality processing device comprises an image module, a bandwidth detecting module, an imagecontrol module, an image compression module and an image output module, wherein the image module is used for receiving an image; and the bandwidth detecting module is used for detecting the bandwidthof a network. The image control module is coupled to the image module and the bandwidth detecting module, judges the range of the bandwidth and transmits a judged result. The image compression modulecompresses the image according to the judged result and outputs a compressed image; and the image output module is used for outputting the compressed image to the network.
Description
Technical field
The present invention is relevant for a kind of image quality processing device and image quality processing method, particularly relevant for instant a kind of image quality processing device and the image quality processing method of handling the network image quality.
Background technology
Along with the fast development of network, also begin application in conjunction with online video frequency program and video conference.The application of this class needs bigger bandwidth just can keep the stable of image quality usually.For instance, video frequency program can advise that the user has the bandwidth of 350～400K at least on a lot of line.Yet the bandwidth of network can be subjected to the influence of many factors.For example when a lot of people surfed the Net, bandwidth can be shared to fall by other users; Perhaps, in the process of video conference, the user is situation about being in background clutter in acquisition during image, can therefore need big bandwidth transmitted image, and it is not enough and influence the problem of image transmission quality that bandwidth all can take place this moment.
Summary of the invention
Based on above consideration, need a kind of image quality processing device, in order to when the network bandwidth is not enough, to improve the quality of images.
In view of this, the present invention discloses a kind of image quality processing device, is applicable to handle an image and pass through Network Transmission.This device comprises an image module, a bandwidth detection, an image control module, an image compression module and an image output module.Image module is in order to receive image, and bandwidth detection is in order to detect the bandwidth of network.The image control module is coupled to image module and bandwidth detection, judges the scope of bandwidth and sends one first judged result.Image compression module is according to the first judged result compressed image and export a compressed image, and image output module is in order to export compressed image to network.
The present invention provides a kind of image quality processing method in addition, is applicable to handle an image and pass through a Network Transmission.At first receive image.Then detect network a bandwidth, judge the scope of bandwidth, according to the bandwidth range compressed image of being judged and export a compressed image, export compressed image at last again to network.
Description of drawings
Fig. 1 shows the calcspar according to the described image quality processing device 10 of one embodiment of the invention;
Fig. 2 shows the structural map according to the described image I MG of one embodiment of the invention;
Fig. 3 shows the compression processing mode according to the described image I MG of one embodiment of the invention;
Fig. 4 shows another compression processing mode according to the described image I MG of one embodiment of the invention; And
Fig. 5 shows the flow chart according to the described image quality processing method of one embodiment of the invention.
Drawing reference numeral
11 image modules, 12 pre-set bandwidths setting modules
13 bandwidth detection, 14 image control modules
15 image compression module, 16 image output module
A1 first area A2 second area
BW bandwidth IMG image
IMAGE compressed image S1, S2, S3, S4 judged result
Embodiment
For described purpose of the present invention, feature and advantage can be become apparent, preferred embodiment cited below particularly, and cooperate appended accompanying drawing, be described in detail below:
Fig. 1 shows the calcspar according to the described image quality processing device 10 of one embodiment of the invention.Image quality processing device 10 comprises an image module 11, a pre-set bandwidths setting module 12, a bandwidth detection 13, an image control module 14, an image compression module 15 and an image output module 16.
Another kind of situation is that the bandwidth BW that bandwidth detection 13 detects network is lower than 350K, for example 310K.This moment, the bandwidth BW 310K of image control module 14 judgement networks dropped within first bandwidth range of 300K～350K (only for giving an example).Because first bandwidth range 300K～350K is a little also lower a little than keeping the required 350K of normal picture quality, but can be not far short of what is expected, therefore image control module 14 sends second judged result S2 notice image compression module 15 with the data of set compression quality compressed image IMG corresponding to second area A2 (core of image I MG), and with the compression quality compressed image IMG that the is lower than set compression quality data corresponding to first area A1 (periphery of image I MG).Such way mainly is because detected network bandwidth BW only than keeping the required 350K of normal picture quality also low a little a bit (for example described 310K), therefore guarantees the compression quality of other piths in the mode of sacrificing the peripheral compression of image I MG quality (periphery of image is more unimportant usually) a little.Export these compressed images to network at last again with the image output of being compressed, and by image output module 16.
More than be that the bandwidth BW that bandwidth detection 13 detects network is the non-limiting examples of 310K.Yet bandwidth detection 13 detected network bandwidth BW may be lower, for example 280K.Under this situation, image control module 14 judge the bandwidth BW 280K of networks drop on 250K～300K (only for for example) second bandwidth range in.Because also poor 350K one segment distance of second bandwidth range 250K～300K, therefore image control module 14 sends the 3rd judged result S3 notice image compression module 15 with the data of set compression quality compressed image IMG corresponding to second area A2 (core of image I MG), and, then abandon corresponding to the data of first area other parts of A1 with the compression quality compressed image IMG that is lower than set compression quality data corresponding to part first area A1.As shown in Figure 3, data corresponding to second area A2 is compressed with normal set compression quality, and the A1 only remaining pairing data of the right and left in first area is done compression with the compression quality that is lower than set compression quality, and the pairing data in A1 top and the bottom, first area is then given up.Difference part with previous embodiment, the data part of being given up corresponding to first area A1 is to do compression with the compression quality that is lower than set compression quality originally, now it is given up thereby can further reduce the bandwidth resources that expend, even therefore network bandwidth deficiency (for example 280K of present embodiment), but still can safeguard the image quality of image I MG pith.
It must be noted that, will abandon corresponding to the data of A1 top and the bottom, first area that the part that is abandoned also can be corresponding to the first area A1 data of one of them part up and down, or the data of a plurality of parts though above embodiment has illustrated.
More than be that the bandwidth BW that bandwidth detection 13 detects network is the non-limiting examples of 280K.Yet bandwidth detection 13 detected network bandwidth BW may be lower than 280K, for example 220K.Under this situation, image control module 14 judges that the bandwidth BW 220K of network drops within the 3rd bandwidth range of 200K～250K (only for giving an example).Because 350K is a lot of for the 3rd bandwidth range 200K～250K difference, therefore image control module 14 sends the 4th judged result S4 notice image compression module 15 with the data of set compression quality compressed image IMG corresponding to second area A2 (core of image I MG), and all abandon the data of image I MG corresponding to first area A1 (periphery of image I MG), as shown in Figure 4.By this way, owing to all abandon the data of image I MG, therefore can save the more bandwidth resource to safeguard the image quality of image I MG pith corresponding to first area A1.
The different image compression countermeasure of being taked according to different network bandwidth BW more than has been described, though it is the periphery of image that above embodiment points out the first area A1 of image, and the second area A2 of image is the core of image, but first area A1 and second area A2 also can be other parts of image.Moreover, in a second embodiment when network bandwidth BW is 280K, though image compression module 15 is with the data of set compression quality compressed image IMG corresponding to second area A2, and with the compression quality compressed image IMG that is lower than set compression quality data corresponding to part first area A1, data corresponding to first area other parts of A1 then abandons, but the data that is abandoned part also can be independent of first area A1 outside, not limiting must be the wherein part of first area A1.
In addition, in above embodiment, more important its pairing data of second area A2 (core) of image is all compressed with set compression quality, but also according to circumstances demand compress with the compression quality that is higher than set compression quality.Therefore, the disclosed notion of the present invention is except coming certain zone of compressed image with lower compression quality, or certain zone that abandons image also can increase the compression quality of image to save outside the bandwidth resources.
Fig. 5 shows the flow chart according to the described image quality processing method of one embodiment of the invention, is applicable to the image that processing is received by a network.At first receive image (step S21), wherein this image I MG comprises first area A1 and second area A2, and first area A1 is the periphery of image, and second area A2 is the core of image.Then in step S22, set a pre-set bandwidths, that is set the required amount of bandwidth that to keep the normal picture quality, for example a 350K.In step S23, detect the bandwidth of network, the bandwidth that is detected be and the image recipient between actual Network Transmission bandwidth.Judge the scope of the network bandwidth in step S24, for example the bandwidth of network is first bandwidth range between 300K～350K, second bandwidth range or the 3rd bandwidth range of 200K～250K (above scope is only for giving an example) of 250K～300K.In step S25,, and export a compressed image according to the network bandwidth scope compressed image of being judged.If the network bandwidth of being judged in step S24 is greater than 350K, for example 400K represents that then the bandwidth of network is enough to the stable image of output quality, therefore with a set compression quality compressed image (first area A1 adds second area A2).If the network bandwidth drops on low any first bandwidth range than 350K, 310K for example, then with the data of set compression quality compressed image corresponding to second area A2 (core of image), and with the compression quality compressed image that the is lower than set compression quality data corresponding to first area A1 (periphery of image).If the bandwidth of network drops on the second lower bandwidth range, 280K for example, then with the data of set compression quality compressed image corresponding to second area A2, and with the compression quality compressed image that the is lower than set compression quality data corresponding to first area A1.If the bandwidth of network drops on the 3rd lower bandwidth range, for example 220K then with the data of set compression quality compressed image corresponding to second area A2, and all abandons the data of image corresponding to first area A1.In step S26, export compressed image at last to network.
At last, it must be noted that above disclosed first, second all decides according to pre-set bandwidths with the 3rd bandwidth range.Each bandwidth range is represented the bandwidth and the gap of keeping the required pre-set bandwidths of stabilized image quality of network.Therefore, meeting of the present invention falls within to take different data compression mechanisms within which bandwidth range according to the bandwidth of network.
Though the present invention discloses as above with preferred embodiment; so it is not in order to limit scope of the present invention; any those skilled in the art; without departing from the spirit and scope of the present invention; when can doing a little change and retouching, so protection scope of the present invention attached claim person of defining before looking is as the criterion.
Claims (11)
1. an image quality processing device is characterized in that, this image quality processing device comprises:
One image module is in order to receive an image, and wherein said image comprises a first area and a second area, and described first area is the periphery of described image, and described second area is the core of described image;
One bandwidth detection is in order to detect a bandwidth of a network;
One image control module is coupled to described image module and described bandwidth detection, in order to the scope of judging described bandwidth and send a judged result;
One image compression module is compressed described image and is exported a compressed image according to described judged result; And
One image output module is in order to export described compressed image to described network.
2. image quality processing device as claimed in claim 1 is characterized in that, described image can be obtained or receive by described network via an image capturing device.
3. image quality processing device as claimed in claim 1 is characterized in that, when described bandwidth was within a set bandwidth range, described image control module sent described judged result.
4. image quality processing device as claimed in claim 3, it is characterized in that, described image compression module is compressed the data of described image corresponding to described second area according to described judged result with a set compression quality, and compresses the data of described image corresponding to described first area with the compression quality that is lower than described set compression quality.
5. image quality processing device as claimed in claim 3, it is characterized in that, described image compression module is compressed the data of described image corresponding to described second area according to described judged result with a set compression quality, and abandons the data of described image corresponding to described first area.
6. image quality processing device as claimed in claim 3 more comprises a pre-set bandwidths setting module, and in order to set a pre-set bandwidths, wherein said set bandwidth range determines according to described pre-set bandwidths.
7. image quality processing method comprises:
Receive an image, wherein said image comprises a first area and a second area, and described first area is the periphery of described image, and described second area is the core of described image;
Detect a bandwidth of a network;
Judge the scope of described bandwidth;
Compress described image and export a compressed image according to the scope of the described bandwidth of being judged; And
Export described compressed image to described network.
8. image quality processing method as claimed in claim 7 is characterized in that, described image can be obtained or receive by described network via an image capturing device.
9. image quality processing method as claimed in claim 7, it is characterized in that, when described bandwidth is within a set bandwidth range, more comprise with a set compression quality and compress the data of described image, and compress the data of described image corresponding to described first area with the compression quality that is lower than described set compression quality corresponding to described second area.
10. image quality processing method as claimed in claim 7, it is characterized in that, when described bandwidth is within a set bandwidth range, more comprise with a set compression quality and compress the data of described image, and abandon the data of described image corresponding to described first area corresponding to described second area.
11. image quality processing method as claimed in claim 9 more comprises and sets a pre-set bandwidths, and determines described set bandwidth range according to described pre-set bandwidths.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103475851A (en) * | 2013-09-05 | 2013-12-25 | 齐齐哈尔大学 | Dynamic encoding device and method based on bandwidth detection |
| CN105491320A (en) * | 2014-09-16 | 2016-04-13 | 鸿富锦精密工业（深圳）有限公司 | Video conference bandwidth management method and system |
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2008
- 2008-08-20 CN CN200810213012A patent/CN101656876A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103475851A (en) * | 2013-09-05 | 2013-12-25 | 齐齐哈尔大学 | Dynamic encoding device and method based on bandwidth detection |
| CN105491320A (en) * | 2014-09-16 | 2016-04-13 | 鸿富锦精密工业（深圳）有限公司 | Video conference bandwidth management method and system |
| CN105491320B (en) * | 2014-09-16 | 2018-12-14 | 南宁富桂精密工业有限公司 | Videoconference bandwidth management method and system |
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Open date: 20100224 |