Patent ID: 7710474
Filing Date: 2010-05-04
Classification: H04N

Abstract:
1. A luminance signal processing device for outputting luminance signal data according to color image signal data based on a sensor signal produced from an image sensor having a Bayer pattern filter including red, green, and blue, the device comprising: a preprocessing section for performing at least black level adjustment, gamma correction, or gain correction for the color image signal data; a multiple line output converter for simultaneously outputting image signal data sets in a plurality of lines in accordance with image signal data output from the preprocessing section; a color carrier component removing/high-frequency level correcting filter section for removing color carrier components and performing high-frequency level correction in accordance with the image signal data sets output from the multiple line output converter; an edge enhancement correction section for performing edge enhancement correction in accordance with image signal data output from the color carrier component removing/high-frequency level correcting filter section; and a detecting section for detecting at least a luminance signal level of a low spatial frequency component, a luminance signal edge level, whether or not a predetermined color is exhibited, a color difference edge level, or whether or not red, green, or blue data reaches a saturation level, in accordance with the image signal data sets output from the multiple line output converter, wherein filter characteristics of the color carrier component removing/high-frequency level correcting filter section are adaptively set for each of pixels or for each of regions containing a plurality of pixels in accordance with results of the detection by the detecting section.