Title: Method for controlling the compression rate of digital images
Application Number: 98811728 Application Date: 1998.09.28
Publication Number: 1280745 Publication Date: 2001.01.17
Approval Pub. Date: 2004.01.07 Granted Pub. Date: 2004.01.07
International Classifi-cation: G06T9/00;H03M7/30;H04N7/30
Applicant(s) Name: Asulab S.A. Address:
Inventor(s) Name: J. Bracamonte;F. Barman;M. Ansorge
Attorney & Agent: wang yong
Abstract:
    The present invention relates to a process for controlling the compression ratio of digital images. This process consists of compressing a digitized image by means of a conventional process such as that known by the abbreviation JPEG. The compression ratio of the image is modified by modifying a parameter of the JPEG process, called the scale factor. According to the invention this scale factor is modified until the compression ratio obtained lies in a range of tolerance of the desired compression ratio. The process uses and approximation to the actual curve of the compression ratio as a function of the scale factor, in order to minimize the number of iterations needed to attain the desired compression ratio.
Time: 15
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