DEVICE AND METHOD FOR COMPRESSING TEXTURE IMAGE, DEVICE AND METHOD FOR EXTRACTING TEXTURE IMAGE, DATA STRUCTURE, AND STORAGE MEDIUM

Title:

DEVICE AND METHOD FOR COMPRESSING TEXTURE IMAGE, DEVICE AND METHOD FOR EXTRACTING TEXTURE IMAGE, DATA STRUCTURE, AND STORAGE MEDIUM

Document Type and Number:

Japanese Patent JP3901644

Kind Code:

B2

Abstract:

PROBLEM TO BE SOLVED: To provide texture image compressing device and method for compressing a texture image which is changed in accordance with visual point directions and light source directions and storing the compressed texture image by less data volume.
SOLUTION: The texture image compressing device is provided with; a separation part 102 for separating texture images acquired on the basis of a plurality of visual point directions and a plurality of light source directions into light source non-dependent texture images and luminance maps, a normalization part 104 for generating a normalized luminance map and a luminance map corrected image by normalizing each luminance map, a luminance map compression part 106 for compressing the normalized luminance map, a luminance map corrected image compression part 105 for compressing the luminance map corrected image, a light source non-dependent texture image compression part 103 for compressing the light source non-dependent texture image, and a multiplex part 107 for connecting the compressed luminance map obtained by compression, the luminance map corrected/compressed image, the light source non-dependent texture image, a color component conversion table, a corrected image conversion table, and a representative luminance map in order to generate a compressed texture.

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Inventors:

Yasushi Yamauchi
Shingo Yanagawa
Masahiro Sekine
Takeshi Nagai
Hideyuki Ueno
Kogure

Application Number:

JP2003021423A

Publication Date:

April 04, 2007

Filing Date:

January 30, 2003

Export Citation:

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Assignee:

Toshiba Corporation

International Classes:

G06T15/00; G06T15/04; (IPC1-7): G06T15/00

Foreign References:

US6297834

Attorney, Agent or Firm:

Hiroshi Horiguchi

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