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:
Mar. 22, 2005
Filed:
Aug. 07, 2001
Jyh-jiun Lee, Hsinchu, TW;
Chun-yen Chen, ChangHua, TW;
Jyh-Jiun Lee, Hsinchu, TW;
Chun-Yen Chen, ChangHua, TW;
Industrial Technology Research Institute, Hsinchu, TW;
Abstract
The present invention provides a method for processing tone scale of a digital color image in which the histogram of tone scales (for example, of RGB, YCC, Lab or Luv) is considered for deciding the semi-S curve. The semi-S curve suits the digital color image and improves the brightness contrast and color saturation for the image output device. A weighting procedure can also be used for compensating those high occurrence colors in the image, and rearrange and analysis the histogram of tone scale, so as to decrease the influence of the high occurrence colors to the calculation and process of tone scale.