JP2003069835A5 - - Google Patents
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- JP2003069835A5 JP2003069835A5 JP2001259465A JP2001259465A JP2003069835A5 JP 2003069835 A5 JP2003069835 A5 JP 2003069835A5 JP 2001259465 A JP2001259465 A JP 2001259465A JP 2001259465 A JP2001259465 A JP 2001259465A JP 2003069835 A5 JP2003069835 A5 JP 2003069835A5
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入力した前記像域情報を可逆符号化する第1符号化工程と、A first encoding step for lossless encoding of the input image area information;
該第1の符号化工程で可逆符号化された符号化データを伸長し、再度可逆符号化する第2符号化工程と、A second encoding step of expanding the lossless encoded data in the first encoding step and lossless encoding again;
前記第1符号化工程で得られる符号化データ量を監視し、該符号化データ量が所定基準を満たしたか否かを判断する監視工程とを備え、Monitoring the amount of encoded data obtained in the first encoding step, and determining whether or not the amount of encoded data satisfies a predetermined standard,
該監視工程によって前記符号化データ量が所定基準を満たしたと判断した時、前記第1の符号化工程では、後続して入力される像域情報を所定の条件に従って変換してから可逆符号化し、前記第2の符号化工程では、第1符号化手段で既に符号化されている符号化データが表す像域情報を所定の条件に従って変換してから再符号化することを特徴とする画像処理方法。When it is determined by the monitoring step that the encoded data amount satisfies a predetermined standard, the first encoding step converts the image area information that is subsequently input according to a predetermined condition, and then performs lossless encoding. In the second encoding step, the image area information represented by the encoded data already encoded by the first encoding means is converted in accordance with a predetermined condition and then re-encoded. .
前記監視工程は、前記第3符号化工程で得られる符号化データ量と前記第1符号化工程で得られる符号化データ量の合計を監視し、前記合計のデータ量に基づいて前記所定基準を満たしたか否かを判断することを特徴とする請求項1に記載の画像処理方法。The monitoring step monitors the total of the encoded data amount obtained in the third encoding step and the encoded data amount obtained in the first encoding step, and determines the predetermined reference based on the total data amount. The image processing method according to claim 1, wherein it is determined whether or not the image is satisfied.
前記監視工程は、前記第3符号化工程で得られる符号化データ量と前記第1符号化工程で得られる符号化データ量の合計を監視し、前記合計のデータ量及び前記第1符号化工程で得られる符号化データ量の夫々が目標符号量を越えたか否かを判断することにより、前記所定基準を満たしたか否かを判断することを特徴とする請求項1に記載の画像処理方法。The monitoring step monitors the total of the encoded data amount obtained in the third encoding step and the encoded data amount obtained in the first encoding step, and the total data amount and the first encoding step 2. The image processing method according to claim 1, wherein it is determined whether or not each of the encoded data amounts obtained in step 1 exceeds a target code amount, thereby determining whether or not the predetermined criterion is satisfied.
入力した前記像域情報を可逆符号化する第1符号化手段と、First encoding means for losslessly encoding the input image area information;
該第1の符号化手段で可逆符号化された符号化データを伸長し、再度可逆符号化する第2符号化手段と、A second encoding means for decompressing the encoded data that has been losslessly encoded by the first encoding means and performing lossless encoding again;
前記第1符号化手段で得られる符号化データ量を監視し、該符号化データ量が所定基準を満たしたか否かを判断する監視手段とを備え、Monitoring means for monitoring the amount of encoded data obtained by the first encoding means, and determining whether or not the amount of encoded data satisfies a predetermined standard;
該監視手段によって前記符号化データ量が所定基準を満たしたと判断した時、前記第1の符号化手段は、後続して入力される像域情報を所定の条件に従って変換してから可逆符号化し、前記第2の符号化手段は、第1符号化手段で既に符号化されている符号化データが表す像域情報を所定の条件に従って変換してから再符号化することを特徴とする画像処理装置。When the monitoring unit determines that the encoded data amount satisfies a predetermined standard, the first encoding unit converts the image area information that is subsequently input according to a predetermined condition, and then performs lossless encoding. The second encoding means converts the image area information represented by the encoded data already encoded by the first encoding means according to a predetermined condition and re-encodes the image processing apparatus. .
前記監視手段は、前記第3符号化手段で得られる符号化データ量と前記第1符号化手段で得られる符号化データ量の合計を監視し、前記合計のデータ量に基づいて前記所定基準を満たしたか否かを判断することを特徴とする請求項4に記載の画像処理装置。The monitoring means monitors the sum of the encoded data amount obtained by the third encoding means and the encoded data amount obtained by the first encoding means, and determines the predetermined reference based on the total data amount. The image processing apparatus according to claim 4, wherein it is determined whether or not the condition is satisfied.
前記監視手段は、前記第3符号化手段で得られる符号化データ量と前記第1符号化手段で得られる符号化データ量の合計を監視し、前記合計のデータ量及び前記第1符号化手段で得られる符号化データ量の夫々が目標符号量を越えたか否かを判断することにより、前記所定基準を満たしたか否かを判断することを特徴とする請求項4に記載の画像処理装置The monitoring means monitors the sum of the encoded data amount obtained by the third encoding means and the encoded data amount obtained by the first encoding means, and the total data amount and the first encoding means 5. The image processing apparatus according to claim 4, wherein it is determined whether or not each of the encoded data amounts obtained in step S1 exceeds a target code amount, thereby satisfying the predetermined criterion. 。.
入力した前記像域情報を可逆符号化する第1符号化手段と、First encoding means for losslessly encoding the input image area information;
該第1の符号化手段で可逆符号化された符号化データを伸長し、再度可逆符号化する第2符号化手段と、A second encoding means for decompressing the encoded data that has been losslessly encoded by the first encoding means and performing lossless encoding again;
前記第1符号化手段で得られる符号化データ量を監視し、該符号化データ量が所定基準を満たしたか否かを判断する監視手段として機能し、Monitoring the amount of encoded data obtained by the first encoding means, and functioning as monitoring means for determining whether or not the amount of encoded data satisfies a predetermined standard;
該監視手段によって前記符号化データ量が所定基準を満たしたと判断した時、前記第1の符号化手段は、後続して入力される像域情報を所定の条件に従って変換してから可逆符号化し、前記第2の符号化手段は、第1符号化手段で既に符号化されている符号化データが表す像域情報を所定の条件に従って変換してから再符号化するWhen the monitoring unit determines that the encoded data amount satisfies a predetermined standard, the first encoding unit converts the image area information that is subsequently input according to a predetermined condition, and then performs lossless encoding. The second encoding unit converts the image area information represented by the encoded data already encoded by the first encoding unit according to a predetermined condition, and re-encodes the image area information.
ことを特徴とするコンピュータプログラム。A computer program characterized by the above.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001259465A JP3840076B2 (en) | 2001-08-29 | 2001-08-29 | Image processing apparatus and method, computer program, and storage medium |
EP02255970.2A EP1292153B1 (en) | 2001-08-29 | 2002-08-28 | Image processing method and apparatus, computer program, and storage medium |
CNB021422478A CN1320809C (en) | 2001-08-29 | 2002-08-28 | Picture processing device and method, and computer program and storage medium |
US10/230,276 US7257264B2 (en) | 2001-08-29 | 2002-08-29 | Image processing apparatus and method for compression-encoding image area information |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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JP2001259465A JP3840076B2 (en) | 2001-08-29 | 2001-08-29 | Image processing apparatus and method, computer program, and storage medium |
Publications (3)
Publication Number | Publication Date |
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JP2003069835A JP2003069835A (en) | 2003-03-07 |
JP2003069835A5 true JP2003069835A5 (en) | 2005-08-25 |
JP3840076B2 JP3840076B2 (en) | 2006-11-01 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2001259465A Expired - Fee Related JP3840076B2 (en) | 2001-08-29 | 2001-08-29 | Image processing apparatus and method, computer program, and storage medium |
Country Status (1)
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JP (1) | JP3840076B2 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006054584A (en) * | 2004-08-10 | 2006-02-23 | Olympus Corp | Image processing apparatus |
JP2007300601A (en) | 2006-04-07 | 2007-11-15 | Konica Minolta Business Technologies Inc | Compression method of image data and its device |
JP4781198B2 (en) | 2006-08-08 | 2011-09-28 | キヤノン株式会社 | Image processing apparatus and method, computer program, and computer-readable storage medium |
JP2011166213A (en) | 2010-02-04 | 2011-08-25 | Canon Inc | Image processing apparatus |
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2001
- 2001-08-29 JP JP2001259465A patent/JP3840076B2/en not_active Expired - Fee Related
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