Image processing apparatus

• US 20080247655A1
• Filed: 03/28/2008
• Published: 10/09/2008
• Est. Priority Date: 04/06/2007
• Status: Active Grant

• Current Assignee: Ricoh Company Limited
• Original Assignee: Ricoh Company Limited
• Inventors: Yano, Takanori
• Granted Patent: US 8,150,179 B2
• Time in Patent Office: Days
• US Class Current: 382/232
• CPC Class Codes: H04N 1/41 Bandwidth or redundancy reduction by scanning H04N1/17 ; methods or arrangements for coding, decoding, compressing or decompressing digital video signals H04N19/00
• CPC Class Codes: H04N 19/63 using sub-band based transform, e.g. wavelets

Abstract

An image processing apparatus includes an encoder, a decoder, and a display unit. The encoder performs scalable encoding to encode input image data to obtain code data to be stored in a storage unit. The decoder decodes the code data stored in the storage unit to obtain decoded image data. The display unit displays an image based on the decoded image data, and receives an instruction to output the image. The image is output in response to the instruction. The decoder decodes only subcode data which is part of the code data.

Claims

1. An image processing apparatus comprising:

an reading unit that reads an original to obtain image data;

an encoder that encodes the image data to obtain code data;

a storage unit that stores therein the code data;

a decoder that decodes the code data to obtain decoded image data;

a display unit that displays an image based on the decoded image data, and receives an instruction to output the image; and

an output unit that outputs the image in response to the instruction, wherein

the encoder performs scalable encoding, and

the decoder decodes only subcode data, which is part of the code data.

2. The image processing apparatus according to claim 1, wherein the display unit displays any one of a thumbnail image and a preview image of the image data as the image.

3. The image processing apparatus according to claim 1, wherein the encoder encodes the image data based on International Organization for Standardization/International Electrotechnical Commission 15444-1 joint photographic experts group 2000 standard.

4. The image processing apparatus according to claim 1, wherein

the code data includes a plurality of objects, and

the decoder decodes only code data of part of the objects.

5. The image processing apparatus according to claim 4, wherein the decoder decodes only part of the code data of part of the objects.

6. The image processing apparatus according to claim 4, wherein the code data is in JPM format.

7. The image processing apparatus according to claim 4, wherein the objects are encoded based on International Organization for Standardization/International Electrotechnical Commission 15444-1 joint photographic experts group 2000 standard.

8. The image processing apparatus according to claim 1, wherein the subcode data is progressively decoded and reproduced.

9. The image processing apparatus according to claim 1, further comprising a calculating unit that calculates an address of the subcode data to specify a range where the subcode data is stored in the storage unit, wherein

the decoder decodes only the subcode data based on the address of the subcode data.

10. An image processing apparatus comprising:

an encoder that encodes image data to obtain code data;

a receiving unit that receives the code data;

a storage unit that stores therein the code data;

a decoder that decodes the code data stored in the storage unit to obtain decoded image data;

a display unit that displays an image based on the decoded image data, and receives an instruction to output the image; and

an output unit that outputs the image in response to the instruction, wherein

the encoder performs scalable encoding, and

the decoder decodes only subcode data, which is part of the code data.

11. The image processing apparatus according to claim 10, wherein the display unit displays any one of a thumbnail image and a preview image of the image data as the image.

12. The image processing apparatus according to claim 10, wherein the encoder encodes the image data based on International Organization for Standardization/International Electrotechnical Commission 15444-1 joint photographic experts group 2000 standard.

13. The image processing apparatus according to claim 10, wherein

the code data includes a plurality of objects, and

the decoder decodes only code data of part of the objects.

14. The image processing apparatus according to claim 13, wherein the decoder decodes only part of the code data of part of the objects.

15. The image processing apparatus according to claim 13, wherein the code data is in JPM format.

16. The image processing apparatus according to claim 13, wherein the objects are encoded based on International Organization for Standardization/International Electrotechnical Commission 15444-1 joint photographic experts group 2000 standard.

17. The image processing apparatus according to claim 10, wherein the subcode data is progressively decoded and reproduced.

18. The image processing apparatus according to claim 10, further comprising a calculating unit that calculates an address of the subcode data to specify a range where the subcode data is stored in the storage unit, wherein

the decoder decodes only the subcode data based on the address of the subcode data.