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(57) ABSTRACT A digital image processing technique is for detecting and correcting visual
imperfections using a reference image. A main image and one or more reference images …

(57) ABSTRACT A method of combining image data from multiple frames to enhance one or
more parameters of video image quality includes acquiring a? rst image at a? rst exposure …

(57) ABSTRACT A digital image processing technique detects and corrects visual
imperfections using a reference image. A main image and one or more reference images …

(57) ABSTRACT A digital image acquisition system includes a portable appa ratus for
capturing digital images and a digital processing component for detecting, analyzing and …

5,905,807 A 5, 1999 Kado et al. 6,697.504 B2 2/2004 Tsai 5,911,139 A 6/1999 Jain et
al........................... 707/3 6,700,999 B1 3/2004 Yang 5,912,980 A 6, 1999 Hunke 6,714,665 …

(57) ABSTRACT A digital image acquisition system having no photographic film, such as a
digital camera, has a flash unit for providing illumination during image capture and a red-eye …

(52) US Cl.......... 382/275; 382/173; 382/254; 382/274 (57) ABSTRACT (58) Field of
Classification Search.................. 382/173 A method of automatically determining a need to …

(57) ABSTRACT A method of tracking faces in an image stream with a digital image
acquisition device includes receiving images from an image stream including faces …