Image processing apparatus, image recording apparatus, image...

Details Image processing apparatus, image recording apparatus, image... Image processing apparatus, image recording apparatus, image...

2007-12-11

2007-12-11

Bella, Matthew C. (Department: 2624)

Image analysis

Image compression or coding

Interframe coding

C382S238000, C382S248000, C382S250000, C382S251000, C382S240000, C375S240160, C375S240120, C348S416100, C348S154000

Reexamination Certificate

active

11567640

ABSTRACT:
An image processing apparatus includes an image compression device which performs a discrete wavelet transform of pixel values for each rectangular portion to produce wavelet coefficients, and performs a hierarchical compression coding of the wavelet coefficients for each rectangular portion so that a codestream is produced. A codestream transform device is provided to reduce an amount of code data in the codestream. The codestream transform device comprises a syntax analysis unit which analyzes header information of each rectangular portion in the codestream. A comparison unit determines a similarity of pixel values between a current frame and a preceding frame in the codestream based on a result of the analysis. A codestream generating unit deletes code data of a corresponding rectangular portion of the current frame when the similarity is larger than a given threshold value.

REFERENCES:
patent: 4792510 (1988-12-01), Kumano et al.
patent: 5990967 (1999-11-01), Kawakami et al.
patent: 5998842 (1999-12-01), Sano
patent: 6218703 (2001-04-01), Sano
patent: 6449392 (2002-09-01), Divakaran et al.
patent: 2002/0171566 (2002-11-01), Huang et al.
patent: 2002/0191698 (2002-12-01), Lee et al.
patent: 2001-309381 (2001-11-01), None

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