Title:
SYSTEM AND METHOD FOR COMPRESSING THE DYNAMIC RANGE OF AN IMAGE
Document Type and Number:
WIPO Patent Application WO2003061266
Kind Code:
A3
Abstract:
A gradient domain compression system (Fig. 1, 10) generates, from an input image having a high luminance dynamic range (Fig. 1, 11), an output image having a lower luminance dynamic range (Fig. 1, 16). The system comprises a gradient image generator module (Fig. 1, 13), a gradient compression module, and an output image generator module (Fig. 1, 16). The gradient image generator module is configured to generate, from the input image, a gradient image representing, for respective points of the input image, gradient values in the luminance of the input image. The gradient compression module is configured to receive the gradient image and generate a compressed range gradient image in which the range of gradient values are compressed. The output image generator module is configured to receive the compressed range gradient image and to generate therefrom an image, the image generated by the output image generator module comprising the output image.
Inventors:
FATTAL RAANAN
LISCHINSKI DANIEL
WERMAN MICHAEL
LISCHINSKI DANIEL
WERMAN MICHAEL
Application Number:
PCT/IB2003/000391
Publication Date:
July 22, 2004
Filing Date:
January 15, 2003
Export Citation:
Assignee:
YISSUM RES DEV CO (IL)
International Classes:
G06K9/00; G06K9/40; G06T5/40; G06T5/50; G06T9/00; H04N7/26; (IPC1-7): G06K9/36
Foreign References:
| US6285798B1 | 2001-09-04 | |||
| US5615287A | 1997-03-25 | |||
| US5706416A | 1998-01-06 |
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