| Original document(44 pages) 中文版 |
An image processing apparatus for compressing and decompressing image data is disclosed that is capable of image processing with a small memory area. The image processing apparatus includes a compression unit to compress the image data to a predetermined compression format; an omission secondary compression unit to omit a portion of the compressed image data given by the compression unit, divide the compressed image data into blocks having predetermined block sizes, and perform secondary compression to generate omission secondary compression image data; a data recovery unit to recover the omission secondary compression image data into the compressed image data; an image rotation unit to rotate the compressed image data decompressed by the data decompression unit according to the block sizes; a block storage unit to store the rotated compressed image data in units of the block sizes; and a data decompression unit to decompress the compressed image data stored in the block storage unit according to predetermined conditions. |
Application Number
申请号 |
200610103867 |
Application Date
申请日 |
2006.08.04 |
| Title 名称 |
Image processing apparatus, image processing method, image processing program and recording medium |
Publication Number
公开号 |
1909589 |
Publication Date
公开日 |
2007.02.07 |
| Approval Pub. Date |
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Granted Pub. Date |
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| International Classification 分类号 |
H04N1/387;H04N1/21 |
Applicant(s) Name
申请人 |
Ricoh Printing Systems Ltd. |
| Address 地址 |
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| Inventor(s) Name 发明人 |
Sato Nobuyuki;Kofuji Shiro;Urata Naoyuki |
| Attorney & Agent 代理人 |
xu qian luo yunpo |
| More information 更 多 信 息 |
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