Method and apparatus for compressing and decompressing image dat

Details Method and apparatus for compressing and decompressing image dat Method and apparatus for compressing and decompressing image dat

1992-02-19

1994-07-05

Ro, Bentsu

Facsimile and static presentation processing

Facsimile

Reduced time or bandwidth for static image communication

3582611, 358428, H04N 712, H04N 1102

Patent

active

053272544

ABSTRACT:
Apparatus for compressing and decompressing image data having rows and columns of pixels is disclosed. Compression component of the apparatus includes a mechanism for storing the image data and a mechanism for processing the image data. Processing mechanism includes a mechanism for resizing the image data into resized image data and a mechanism for compressing the resized image data at least once, thereby creating compressed image data. The resizing mechanism includes a mechanism for selecting at least one row from the image data for inclusion in the resized image data, a mechanism for selecting at least one pixel within each selected row for inclusion in the resized image data. Inverse decompression component of the apparatus is also disclosed. Method for compressing and decompressing image data having rows and columns of pixels is disclosed. A computer program product which contains encoded instructions for performing the invented method is also disclosed.

REFERENCES:
patent: 4369463 (1983-01-01), Anastassion et al.
patent: 4488174 (1984-12-01), Mitchell et al.
patent: 4870695 (1989-09-01), Gonzales et al.
patent: 5159449 (1992-10-01), Allmendinger
patent: 5184218 (1993-02-01), Grerdes

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