Image analysis – Image compression or coding
Patent
1996-04-17
1998-09-15
Boudreau, Leo H.
Image analysis
Image compression or coding
382274, G06K 900
Patent
active
058091726
ABSTRACT:
General apparatus 10 for carrying out non-linear aggregation compression and storage of pixel data is presented. Scanner device 10S receives record documents 10R containing record images 10D for providing analog data 10A. Analog-to-digital converter 12A digitizes the amplitudes of the analog data to provide digital data stream 12D. Mapping device 14 defines a non-linear series of aggregation segments (A, B, C . . . X, Y, and Z) along the scale of intensity which are aggregated to an aggregation level (a, b, c, . . . x, y, or z) within each segment. The basic steps of the general method are: Retrieving pixel image data from a data source to form data stream 12D; Defining a non-linear series of aggregation segments; Determining an aggregation level within each aggregation segment; Aggregating the intensity scale levels within each aggregation segment; Compressing the aggregated pixel data; and Storing the non-linearly aggregated pixel data in a memory device.
REFERENCES:
patent: 4645459 (1987-02-01), Graf et al.
patent: 4667190 (1987-05-01), Fant
patent: 4835532 (1989-05-01), Fant
patent: 5394523 (1995-02-01), Harris
Boudreau Leo H.
Canon Kabushiki Kaisha
Hentzel Paul
Taddayon Bijan
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