[특허]Fractal image compression device and method

Fractal image compression device and method 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G06K-009/36
출원번호	US-0521809 (1995-08-31)
우선권정보	KR-0009252 (1995-04-19)
발명자 / 주소	Moon Yong-Ho (Busan KRX) Kim Jae-Ho (Busan KRX) Park Dong-Seek (Daegu KRX)
출원인 / 주소	SamSung Electronics Co., Ltd. (Suwon KRX 03)
인용정보	피인용 횟수 : 29 인용 특허 : 0

초록 ▼

A fractal image compression method performed in a digital image processing device includes the steps of: dividing image data representative of a composite image into a plurality of range blocks each having a first predetermined size; designating, for each of the range blocks, a plurality of domain blocks each having a second predetermined size, wherein each one of the plurality of domain blocks has a subportion that includes an entire portion of the corresponding range block; calculating coefficients of a contractive transformation function to match a plurality of spacially transformed domain blocks to each range block; calculating distortion errors between the range blocks and their corresponding pluralities of spacially transformed domain blocks; comparing the distortion errors among the spacially transformed domain blocks for each corresponding range block, and selecting a spacially transformed domain block having a minimum distortion error as a maximum similarity block for each corresponding range block; and storing, as a fractal code, a location index and coefficients of the contractive transformation function for each of the maximum similarity blocks.

대표청구항 ▼

A fractal image compression method, comprising the steps of: dividing image data representative of a composite image into a plurality of range blocks each having a first predetermined size; designating, for each one of said plurality of range blocks, a plurality of domain blocks each having a second predetermined size larger than said first predetermined size, each one of said plurality of domain blocks having a subportion that includes an entire portion of a corresponding range block; calculating, for each one of said plurality of range blocks, coefficients of a contractive transformation function to match each one of said plurality of domain blocks to said corresponding range block; calculating, for each one of said plurality of range blocks, errors between each one of said plurality of domain blocks and said corresponding range block; selecting, for each one of said plurality of range blocks, one of said plurality of domain blocks having a minimum error as a maximum similarity block for said corresponding range block; and storing, for each one of said plurality of range blocks, a location index and said coefficients of said contractive transformation function for said one of said plurality of domain blocks selected as said maximum similarity block for said corresponding range block.

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Fractal image compression device and method 원문보기

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