Method for compressing an image by using characteristic values

• US 7,039,230 B2
• Filed: 05/01/2002
• Issued: 05/02/2006
• Est. Priority Date: 05/01/2002
• Status: Expired due to Fees

• Current Assignee: SanJet Technology Corp.
• Original Assignee: Aiptek International Incorporated (Aiptek Incorporated)
• Inventors: Way, Jing-Dar
• Primary Examiner(s): Do, Anh Hong
• Application Number:
  US10/135,571
• Publication Number:
  US 20030206657A1
• Time in Patent Office: 1,462 Days
• Field of Search: 382/232, 382/166, 382/250, 382/242, 382/305, 382/282, 399/111, 399/118, 347/118, 347/138, 348/699, 375/240.16, 375/240.17, 707/3, 707/6
• US Class Current: 382/166
• CPC Class Codes: G06T 9/005 Statistical coding, e.g. Huffman, run length coding

Abstract

The present invention relates to a method compressing image data, more particularly to a method for compressing image data by using characteristic values. At first, input image data are executed by using a pre-processing process of the present invention. The pre-processing process is to use a mathematical calculation method, a filter, or a database to differentiate outlines of objects and to classify different objects of the image data. Then different colors, which are in the outlines of the different objects, are acquired by using a color classifying method and the different colors are used to be different characteristic values of the image data. At last, the different characteristic values are saved individually in a memory to finish the method for compressing image data by classifying colors.

Claims

1. A method for compressing an image, wherein said method comprises:

providing an image data, which comprise a first object and a second object, wherein said first object comprises a first outline and a first color and said second object comprises a second outline and a second color;

differentiating to extract said first outline, said second outline, said first color, and said second color out of said image data;

acquiring said first color that is correspondingly in the first outline as a first characteristic value and acquiring said second color that is correspondingly in the second outline as a second characteristic value, thereby pixel data of the image data is thus compressed into the first and the second characteristic value; and

saving said first characteristic value and said second characteristic value in a memory.

2. The method according to claim 1, wherein said memory is a flash memory.

3. The method according to claim 1, wherein said first outline and said second outline are extracted by using a mathematical calculation method.

4. The method according to claim 1, wherein said first outline and said second outline are extracted by using a filter.

5. The method according to claim 1, wherein said first outline and said second outline are different with each other.

6. The method according to claim 1, wherein said first outline, said second outline, said third outline, and said fourth outline are extracted by using a mathematical calculation method.

7. The method according to claim 1, wherein said first outline, said second outline, said third outline, and said fourth outline are extracted by using a filter.

8. A method for compressing an image by using characteristic values, wherein said method comprises:

providing an image data, which comprise pluralities of different objects, wherein each object correspondingly comprises an outline and a color;

differentiating said plurality of different objects;

extracting said outline and said color out of said image data;

acquiring said color that is in the corresponding outline as a characteristic value, thereby pixel data of the image data is thus compressed into the characteristic values; and

saving the characteristic values of said plurality of different objects in a memory.

9. The method according to claim 8, wherein said memory is a flash memory.

10. The method according to claim 8, wherein said outline is extracted by using a mathematical calculation method.

11. The method according to claim 8, wherein said outline is extracted by using a filter.

12. A method for compressing an image by using characteristic values, wherein said method comprises:

providing an image data, which comprises a face, wherein said face comprises eyes that comprise a first outline and a first color, a nose that comprises a second outline and a second color, a mouth that comprises a third outline and a third color, and ears that comprise a fourth outline and a fourth color;

differentiating to extract said first outline, said second outline, said third outline, said fourth outline, said first color, said second color, said third color, said fourth color from said image data;

acquiring said first color to be first characteristic value, acquiring said second color to be a second characteristic value, acquiring said third color to be a third characteristic value, and acquiring said fourth color to be a fourth characteristic value thereby pixels data of the image data is thus compressed into the first, the second, the third, and the fourth characteristic values; and

saving said first characteristic value, said second characteristic value, said third characteristic value, and said fourth characteristic value in a memory.

13. The method according to claim 12, wherein said memory is a flash memory.