Image coding and decoding methods, image coding and decoding...

Details Image coding and decoding methods, image coding and decoding... Image coding and decoding methods, image coding and decoding...

2007-10-30

2007-10-30

Tran, Phuoc (Department: 2624)

Image analysis

Image compression or coding

Including details of decompression

C382S245000, C382S246000

Reexamination Certificate

active

11483820

ABSTRACT:
In an image coding method of the present invention, after a process such as DCT is performed to digital image data, quantization process is performed, and then, to resultant quantized transform coefficients, variable length coding process is performed with reference to a variable length code table showing how variable length codes are allocated, and in a comparison process between an event derived from the quantized transform coefficients and a reference event included in the variable length code table, transformation process is performed to increase a possibility of performing variable length coding with satisfactory coding efficiency.

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Gonzalez et al., “Digital Image Processing,” Jun. 1992, pp. 396-402.

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