JP2004173205A5 - - Google Patents
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- JP2004173205A5 JP2004173205A5 JP2002339741A JP2002339741A JP2004173205A5 JP 2004173205 A5 JP2004173205 A5 JP 2004173205A5 JP 2002339741 A JP2002339741 A JP 2002339741A JP 2002339741 A JP2002339741 A JP 2002339741A JP 2004173205 A5 JP2004173205 A5 JP 2004173205A5
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- compression
- area data
- image size
- image
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Claims (17)
前記領域抽出手段により抽出された各領域データに圧縮処理を施す領域圧縮手段と、
前記領域圧縮手段により圧縮処理された各領域データを合成する領域合成手段とを有する画像処理装置であって、
前記領域抽出手段により抽出された所定領域データの画像サイズを算出する画像サイズ算出手段をさらに有し、
前記領域圧縮手段は、前記画像サイズ算出手段により算出された前記所定領域データの画像サイズがしきい値以上の場合第１の圧縮方式により前記所定領域データに圧縮処理を施し、前記画像サイズ算出手段により算出された前記所定領域データの画像サイズが前記しきい値未満の場合第２の圧縮方式により前記所定領域データに圧縮処理を施すことを特徴とする、
画像処理装置。A region extracting means for separating and extracting a character region, a graphic region and a photograph region from image data;
Area compression means for compressing each area data extracted by the area extraction means;
An image synthesizing apparatus that synthesizes each area data compressed by the area compressing means,
Image size calculating means for calculating the image size of the predetermined area data extracted by the area extracting means;
The area compression means performs compression processing on the predetermined area data by a first compression method when the image size of the predetermined area data calculated by the image size calculation means is greater than or equal to a threshold value, and the image size calculation means When the image size of the predetermined area data calculated by the above is less than the threshold value, the predetermined area data is subjected to compression processing by a second compression method,
Image processing device.
前記第２の圧縮方式は、圧縮処理前の画像サイズが前記しきい値未満の前記所定領域データに適用した場合でも圧縮処理後の画像サイズが圧縮処理前より大きくならないものである、
請求項１に記載の画像処理装置。In the first compression method, when the image size before compression processing is applied to the predetermined area data less than the threshold value, the image size after compression processing is larger than the image size before compression processing,
In the second compression method, the image size after the compression process does not become larger than that before the compression process even when the image size before the compression process is applied to the predetermined area data less than the threshold value.
The image processing apparatus according to claim 1.
前記第１段階で抽出された各文字領域データの画像サイズを算出する第２段階と、
前記第２段階で算出された前記各文字領域データの画像サイズがしきい値以上の場合圧縮方式としてＭＭＲ圧縮を選択し、前記第３段階で算出された前記各文字領域データの画像サイズがしきい値未満の場合圧縮方式としてＦｌａｔｅ圧縮を選択する第３段階と、
前記第３段階で選択された圧縮方式により前記各文字領域データに圧縮処理を施す第４段階と、
を有することを特徴とする画像処理方法。A first step of extracting a character region from image data;
A second step of calculating an image size of each character area data extracted in the first step;
When the image size of each character region data calculated in the second step is equal to or larger than a threshold value, MMR compression is selected as a compression method, and the image size of each character region data calculated in the third step is reduced. A third step of selecting Flate compression as the compression method if it is less than the threshold;
A fourth step of applying compression processing to each character area data by the compression method selected in the third step;
An image processing method comprising:
段階（１）で抽出された各領域データに圧縮処理を施す段階（２）と、
段階（２）で圧縮処理された各領域データを合成する段階（３）とを有する画像処理方法であって、
段階（１）で抽出された所定領域データの画像サイズを算出する段階（４）をさらに有し、
段階（２）は、前記画像サイズ算出手段により算出された前記所定領域データの画像サイズがしきい値以上の場合第１の圧縮方式により前記所定領域データに圧縮処理を施し、前記画像サイズ算出手段により算出された前記所定領域データの画像サイズが前記しきい値未満の場合第２の圧縮方式により前記所定領域データに圧縮処理を施すことを特徴とする、
画像処理方法。(1) separating and extracting a character area, a graphic area, and a photograph area from image data;
(2) performing compression processing on each area data extracted in step (1);
A step (3) of combining the area data compressed in step (2),
A step (4) of calculating an image size of the predetermined area data extracted in step (1);
In the step (2), when the image size of the predetermined area data calculated by the image size calculating means is equal to or larger than a threshold value, the predetermined area data is compressed by a first compression method, and the image size calculating means When the image size of the predetermined area data calculated by the above is less than the threshold value, the predetermined area data is subjected to compression processing by a second compression method,
Image processing method.
前記第２の圧縮方式は、圧縮処理前の画像サイズが前記しきい値未満の前記所定領域データに適用した場合でも圧縮処理後の画像サイズが圧縮処理前より大きくならないものである、
請求項７に記載の画像処理方法。In the first compression method, when the image size before compression processing is applied to the predetermined area data less than the threshold value, the image size after compression processing is larger than the image size before compression processing,
In the second compression method, the image size after the compression process does not become larger than that before the compression process even when the image size before the compression process is applied to the predetermined area data less than the threshold value.
The image processing method according to claim 7.
手順（１）で抽出された各領域データに圧縮処理を施す手順（２）と、
手順（２）で圧縮処理された各領域データを合成する手順（３）とを画像処理装置に実行させる画像処理プログラムであって、
手順（１）で抽出された所定領域データの画像サイズを算出する手順（４）をさらに画像処理装置に実行させるものであり、
手順（２）は、前記画像サイズ算出手段により算出された前記所定領域データの画像サイズがしきい値以上の場合第１の圧縮方式により前記所定領域データに圧縮処理を施し、前記画像サイズ算出手段により算出された前記所定領域データの画像サイズが前記しきい値未満の場合第２の圧縮方式により前記所定領域データに圧縮処理を施すことを特徴とする、
画像処理プログラム。A procedure (1) for separating and extracting a character area, a graphic area, and a photograph area from image data;
A procedure (2) for compressing each area data extracted in the procedure (1);
An image processing program for causing the image processing apparatus to execute a procedure (3) for combining the area data compressed in the procedure (2).
The procedure (4) for calculating the image size of the predetermined area data extracted in the procedure (1) is further executed by the image processing apparatus.
In the step (2), when the image size of the predetermined area data calculated by the image size calculating means is equal to or larger than a threshold value, the predetermined area data is compressed by a first compression method, and the image size calculating means When the image size of the predetermined area data calculated by the above is less than the threshold value, the predetermined area data is subjected to compression processing by a second compression method,
Image processing program.
前記第２の圧縮方式は、圧縮処理前の画像サイズが前記しきい値未満の前記所定領域データに適用した場合でも圧縮処理後の画像サイズが圧縮処理前より大きくならないものである、
請求項１２に記載の画像処理プログラム。In the first compression method, when the image size before compression processing is applied to the predetermined area data less than the threshold value, the image size after compression processing is larger than the image size before compression processing,
In the second compression method, the image size after the compression process does not become larger than that before the compression process even when the image size before the compression process is applied to the predetermined area data less than the threshold value.
The image processing program according to claim 12.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002339741A JP3960210B2 (en) | 2002-11-22 | 2002-11-22 | Image processing device |
| US10/699,700 US7715640B2 (en) | 2002-11-05 | 2003-11-04 | Image processing device, image processing method, image processing program and computer-readable recording medium on which the program is recorded |
| US12/659,855 US7970225B2 (en) | 2002-11-05 | 2010-03-24 | Image processing device, image processing method, image processing program and computer-readable recording medium on which the program is recorded |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002339741A JP3960210B2 (en) | 2002-11-22 | 2002-11-22 | Image processing device |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2004173205A JP2004173205A (en) | 2004-06-17 |
| JP2004173205A5 true JP2004173205A5 (en) | 2005-07-28 |
| JP3960210B2 JP3960210B2 (en) | 2007-08-15 |
Family
ID=32702626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002339741A Expired - Fee Related JP3960210B2 (en) | 2002-11-05 | 2002-11-22 | Image processing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3960210B2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4792835B2 (en) * | 2005-06-27 | 2011-10-12 | コニカミノルタビジネステクノロジーズ株式会社 | Image processing device |
| US8077990B2 (en) | 2006-04-28 | 2011-12-13 | Pixsense Inc. | Efficient content compression and decompression system and method |
| JP4950929B2 (en) * | 2008-04-01 | 2012-06-13 | キヤノン株式会社 | Image file editing apparatus, image file editing method and program |
| US10015506B2 (en) | 2013-05-20 | 2018-07-03 | Cinova Media | Frequency reduction and restoration system and method in video and image compression |
| US10462477B2 (en) | 2015-02-25 | 2019-10-29 | Cinova Media | Partial evaluator system and method |
| US10460700B1 (en) | 2015-10-12 | 2019-10-29 | Cinova Media | Method and apparatus for improving quality of experience and bandwidth in virtual reality streaming systems |
| US10944971B1 (en) | 2017-05-22 | 2021-03-09 | Cinova Media | Method and apparatus for frame accurate field of view switching for virtual reality |
-
2002
- 2002-11-22 JP JP2002339741A patent/JP3960210B2/en not_active Expired - Fee Related
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