Method of decoding image data

Details Method of decoding image data Method of decoding image data

1997-04-25

2000-11-07

Couso, Jose L.

Image analysis

Image compression or coding

Including details of decompression

382232, 382248, 382251, G06K 936

Patent

active

061447684

ABSTRACT:
An image encoding/decoding system (10) includes an encoder section (12) and a decoder section (14). The encoder section (12) includes an image detector (15), a transform processor (16), a quantizer (18), a zig-zag process memory (20), and a run/variable length encoder (22). The decoder section includes a variable/run length decoder (24), a dequantizer (26), a zig-zag deprocess memory (28), and an inverse transform processor (30). The inverse transform processor (30) within the decoder section (14) uses basis functions (58) based on a discrete articulated trapezoid transform for ease of realizability in decoding image data. The discrete articulated trapezoid transform may also be used by the transform processor (16) within the encoder section (12) for the encoding of detected images.

REFERENCES:
patent: 5121216 (1992-06-01), Chen et al.
patent: 5384849 (1995-01-01), Jeong
patent: 5495538 (1996-02-01), Fan
patent: 5519503 (1996-05-01), Ohki
patent: 5686683 (1997-11-01), Freed
Approximation of Curves; pp. 275-279.

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