Patent ID: 6993203

Claim:
An image processing apparatus, including a blurred image creating device for creating a blurred image by subjecting an original image to an erosion processing and to a dilation processing, and a brightness correction device for correcting the brightness of said original image based on the blurred image created by the blurred image creating device, wherein said blurred image creating device comprises: an opening processing device for realizing an opening processing by subjecting said original image to the erosion processing and to the dilation processing successively; a closing processing device for realizing a closing processing by subjecting said original image to the dilation processing and to the erosion processing successively; and a brightness average value computing device for computing an average value between brightness of the original image subjected to the opening processing by said opening processing device and brightness of the original image subjected to the closing processing by said closing processing device, to use the computed result as the blurred image.