US PATENT DOCUMENTS 5.991, 456 A 11/1999 Rahman et al. 6,009,209 A 12/1999 Acker
et al. 4,970,683 A 11, 1990 Harshaw et al. 6,016,354 A 1/2000 Lin et al. 4,975,969 A …

US6134339A - Method and apparatus for determining the position of eyes and for correcting
eye-defects in a captured frame - Google Patents US6134339A - Method and apparatus for …

(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 …

Digital image processing is generally concerned with improving a captured image in some
way or extracting information from it for further processing. Typical opera tions include …

(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 …

Accordingly, it is an object of at least one embodiment of the present invention to provide a
method for correcting selected candidate positions of eye color defects in a digital image …

5,559,903 A 9/1996 Krabbenhoeft threshold value. Various filtering, morphological, and blob
5,710,842 A 1/1998 Lee analysis techniques may be applied to the mask to eliminate …

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 …

An image enhancement apparatus and a corresponding method use face detection to
provide for automatic enhance ment of appearances of an image based on knowledge of …