CN105208397A - Plane lower display screen image lossless parallel compression method - Google Patents
Plane lower display screen image lossless parallel compression method Download PDFInfo
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- CN105208397A CN105208397A CN201410274199.7A CN201410274199A CN105208397A CN 105208397 A CN105208397 A CN 105208397A CN 201410274199 A CN201410274199 A CN 201410274199A CN 105208397 A CN105208397 A CN 105208397A
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Abstract
The invention provides a plane lower display screen image lossless parallel compression method. According to the method, through carrying out judgment processing on the plane lower display screen blocks, the block screen image with display content is subjected lossless compression, the compression ratio of the plane lower display screen image lossless compression can be raised, and thus the bandwidth limit of air to ground wireless transmission is satisfied by a compressed image, the time delay of image processing is reduced, and the real-time performance of ground monitoring is improved.
Description
Art
The present invention relates to one and harmless parallelly compressed method is carried out to (lower display screen) image aobvious under aircraft, the compression ratio of aobvious Lossless Image Compression Algorithm under aircraft can be improved, make the image after compression meet the bandwidth restriction of vacant lot wireless transmission.
Background technology
At present, known image compression divides lossy compression method and Lossless Compression two kinds of methods.Lossy compression method likely loses the Partial key information of handled image, and current existing lossless compression method exists the not high phenomenon of compression ratio.For the demand of image aobvious under monitoring aircraft in real time on ground, lossy compression method method can not be adopted, to avoid omitting crucial information, existing lossless compression method cannot be adopted again simultaneously, the restriction of the data bandwidth of vacant lot wireless transmission cannot be met because its compression ratio is not high.
Summary of the invention
In order to the two difficult problems that the compression ratio solving information loss that lossy compression method method brings and known lossless compression method is not high, the particularity of the present invention's aobvious displaying contents under utilizing aircraft, the method of process is judged by piecemeal process, abandon useless background image, significantly reduce the data volume of shown image, meanwhile, use multimode is parallel carries out compression process to displaying contents, under the condition of not losing displaying contents, improve the real-time that process is when compressed in compression.
The figure that under aircraft, aobvious shown image is all made up of word, letter and point and line substantially, its more than 80% displaying contents is solid color background.According to this feature, lower aobvious screen is divided into n × n block by the present invention, carries out judgement process respectively, the small images without displaying contents abandoned, thus reach the object of Lossless Compression at high proportion every block image.For the small images having displaying contents, existing lossless compression method also can be adopted to compress further.
Owing to have employed the method for piecemeal process, the present invention adopts multiple processing module to walk abreast and processes each small images, thus improves the processing speed of entire image, reduces the time delay of image Compression.
Under present invention greatly enhances aircraft, the compression ratio of aobvious image, did not both lose image information, can meet again the bandwidth restriction of wireless transmission.
Embodiment
The present invention by lower aobvious shown image after noise reduction process, n × n (n >=10) block is divided into gather lower aobvious screen, and by multiple processing module is parallel, each fritter screen is processed, as judged, small images is wherein entirely as color background, then this small images is abandoned, otherwise transmission of encoding after just this small images being adopted existing lossless compression method (as method for run-length encoding) to compress.After ground receiver to Image Coding, each small images is undertaken restoring by the coding/decoding method of the run length encoding of correspondence and shows in former relevant position, then the part abandoned is shown by its background colour, this completes aloft to all processes of the compressed encoding of image aobvious under aircraft, wireless transmission, display of decoding to ground.
Claims (4)
1. for a lossless compression method for screen display figure, it is characterized in that: screen is carried out piecemeal and judgement process is carried out to its displaying contents, abandoning without displaying contents of wherein only having powerful connections having the further compression process of displaying contents.
2. lossless compression method according to claim 1, is characterized in that: by the process of display image screen piecemeal.
3. lossless compression method according to claim 1, is characterized in that: adopt parallel processing manner to process the displaying contents of multiple screen block simultaneously.
4. lossless compression method according to claim 1, is characterized in that: adopt lossless compression method to improve image compression rate further to the image after piecemeal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410274199.7A CN105208397A (en) | 2014-06-19 | 2014-06-19 | Plane lower display screen image lossless parallel compression method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410274199.7A CN105208397A (en) | 2014-06-19 | 2014-06-19 | Plane lower display screen image lossless parallel compression method |
Publications (1)
| Publication Number | Publication Date |
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| CN105208397A true CN105208397A (en) | 2015-12-30 |
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| CN201410274199.7A Pending CN105208397A (en) | 2014-06-19 | 2014-06-19 | Plane lower display screen image lossless parallel compression method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6449310B1 (en) * | 1997-11-21 | 2002-09-10 | Matsushita Electric Industrial Co., Ltd. | Video signal coding apparatus |
| CN101039417A (en) * | 2007-04-26 | 2007-09-19 | 广东威创日新电子有限公司 | Multi-block parallel compression video data apparatus and compression method thereof |
| CN101098473A (en) * | 2006-06-30 | 2008-01-02 | 联想(北京)有限公司 | Picture coding method and apparatus |
| CN102438142A (en) * | 2011-11-08 | 2012-05-02 | 北京空间机电研究所 | Adaptive image compression method based on deep space background |
| CN103246499A (en) * | 2013-05-28 | 2013-08-14 | 西安电子科技大学 | Device and method for parallelly processing images |
-
2014
- 2014-06-19 CN CN201410274199.7A patent/CN105208397A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6449310B1 (en) * | 1997-11-21 | 2002-09-10 | Matsushita Electric Industrial Co., Ltd. | Video signal coding apparatus |
| CN101098473A (en) * | 2006-06-30 | 2008-01-02 | 联想(北京)有限公司 | Picture coding method and apparatus |
| CN101039417A (en) * | 2007-04-26 | 2007-09-19 | 广东威创日新电子有限公司 | Multi-block parallel compression video data apparatus and compression method thereof |
| CN102438142A (en) * | 2011-11-08 | 2012-05-02 | 北京空间机电研究所 | Adaptive image compression method based on deep space background |
| CN103246499A (en) * | 2013-05-28 | 2013-08-14 | 西安电子科技大学 | Device and method for parallelly processing images |
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| CB02 | Change of applicant information | ||
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Address after: 101100 Beijing city Tongzhou District Evelyn North Building 53, room 1915 19 Applicant after: In Beijing and Zhuo Yuan Science and Technology Ltd. Address before: 101100 Beijing city Tongzhou District Evelyn North Building 52 room 1308 Applicant before: In Beijing and Zhuo Yuan Science and Technology Ltd. |
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20151230 |