Image signal processor

Abstract

An image signal processor capable of performing image conversion is disclosed. The image signal processor includes a defective pixel detector configured to determine whether a target pixel is a defective pixel based on pixel data of a reference pixel having the same attributes as the target pixel; and a defective pixel corrector configured to correct pixel data of the target pixel when it is determined that the target pixel is the defective pixel. The defective pixel detector corrects a luminance of the reference pixel using a luminance deviation between target neighbor pixels adjacent to the target pixel and reference neighbor pixels adjacent to the reference pixel; compares a threshold value with a difference value obtained based on the pixel data of the target pixel and correction data of the reference pixel; and determines whether the target pixel is the defective pixel based on a result of the comparison.

Dependencies are inferred from the claim text.