Patent ID: 7777791
Filing Date: 2010-08-17
Classification: H04N

Abstract:
1. A defective pixel correction device, comprising: a first circuit configured to receive pixel data from a color sensor; a second circuit configured to obtain an estimated pixel value of a pixel of interest from pixel data of neighboring pixels of said pixel of interest having a same color as said pixel of interest; a difference circuit configured to obtain a differential value between a sensor-input pixel value of said pixel of interest and said estimated pixel value; a storing circuit storing a plurality of threshold values, one for each color of said color sensor; and a comparing and selecting circuit configured to compare said differential value and a continuously varying threshold value of the plurality of threshold values stored in the storing circuit corresponding to the color of said pixel of interest, and when said differential value is greater than said threshold value, to output said estimated pixel value as a pixel value of said pixel of interest instead of said sensor-input pixel value.