发明名称 |
METHOD AND APPARATUS FOR LOSSLESS IMAGE COMPRESSION |
摘要 |
The present disclosure discloses method and apparatus for lossless image compression, and relates to the field of computer technologies. The method includes: removing ancillary information and redundant information from a picture having a predefined format in a preset manner; decompressing the picture to restore original picture data of the picture; and setting a compression parameter for the original picture data of the picture and compressing the original picture data of the picture into a picture having the same format before the picture decompression using the compression parameter. According to the present disclosure, ancillary data and redundant data in a picture are removed, and after decompression is performed on the picture, the picture is compressed again according to a preset compression parameter, so that based on lossless compression, a compression rate of the picture is increased, and storage space is saved. |
申请公布号 |
US2015287217(A1) |
申请公布日期 |
2015.10.08 |
申请号 |
US201514716557 |
申请日期 |
2015.05.19 |
申请人 |
Tencent Technology (Shenzhen) Company Limited |
发明人 |
HUANG Feiyue;WU Yunsheng;WU Yongjian;DING Shouhong;WU Shang |
分类号 |
G06T9/00;H04N19/186;H04N19/119;H04N19/103;H04N19/44;H04N19/85 |
主分类号 |
G06T9/00 |
代理机构 |
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代理人 |
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主权项 |
1. A lossless picture compression method, comprising:
at a computing device having one or more processors and memory for storing program modules to be executed by the one or more processors:
removing ancillary information and redundant information from a picture having a predefined format in a preset manner;decompressing the picture to restore original picture data of the picture; andsetting a compression parameter for the original picture data of the picture and compressing the original picture data of the picture into a picture having the same format before the picture decompression using the compression parameter. |
地址 |
Shenzhen CN |