Size reduction method and device for compressed images

Details Size reduction method and device for compressed images Size reduction method and device for compressed images

2005-08-16

2005-08-16

Patel, Kanjibhai (Department: 2625)

Image analysis

Image compression or coding

Lossless compression

C382S246000, C382S251000, C382S250000, C382S239000, C375S243000, C375S240200

Reexamination Certificate

active

06931159

ABSTRACT:
A method and device for reducing a compressed image to a target size by reducing the quality of the image by a quality scaling factor. Image statistics inherent to the image are used to compute the size reduction as a function of the quality scaling factor. Using the relationship between the quality and the size of the image, an estimated quality scaling factor is obtained based on the target size in an iterative process until the size reduction corresponding to the estimated quality scaling factor is substantially equal to the target reduction.

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