The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 02, 2003
Filed:
Oct. 13, 1999
Sharp Laboratories of America, Camas, WA (US);
Abstract
A method for compressing and decompressing image information. An encoder receives initial image information and transforms said initial information using a linear transform to produce coefficients. These are then locally normalized using a neighborhood masking weighting factor, quantized and coded to result in a compressed bit stream. The compressed bit stream is received at a decoder and an inverse process is applied to reconstruct said image data from the compressed bitstream. Alternatively, the neighborhood-masking factor can be applied after quantization in the rate-distortion optimization process.
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