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:
Nov. 18, 2003
Filed:
Feb. 24, 2000
Rajan L. Joshi, Rochester, NY (US);
Paul W. Jones, Churchville, NY (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
A method for encoding a digital image in a visually progressive manner comprises decomposing the digital image into two or more subbands; quantizing the subbands of the decomposed digital image to create quantized output values for each subband wherein each subband is quantized with a specific quantizer step size and forming bit-planes from the quantized output values of each subband and calculating an effective quantizer step size for each bit plane. Then a threshold viewing distance is computed for each bit-plane from the effective quantizer step size associated with that bit plane. The method further includes ordering the bit-planes in decreasing order to the corresponding threshold viewing distances; entropy coding the ordered bit-planes to produce a compresed bit-stream; and combining the compressed bit-stream with bit-plane ordering information to produce an encoded representation of the digital image.