IMAGE PROCESSING METHOD AND DEVICE FOR ADAPTIVE IMAGE ENHANCEMENT

摘要

An image processing device includes an artificial image determining unit configured to determine whether a pixel is in an artificial image by using two or more different determination criteria or conditions based on an input image signal, where the determination criteria include any one or more of a first determination criterion for determining whether the pixel is part of an artificial image by determining whether a predetermined area including the pixel represents a flat area, a second determination criterion for determining whether the pixel is part of an artificial image by determining whether the predetermined area represents a gradation area, or a third determination criterion for determining whether the pixel is part of an artificial image by determining whether the predetermined area represents a color change area.

主权项

1. An image processing device comprising:
an artificial image determining unit configured to determine whether an image is artificial by using two or more different determination criteria for determining whether the image is artificial on a basis of an input image signal, and to determine whether an image for each pixel in an input image represented by the input image signal represents an artificial image based on at least one of a function or logical combination of results determined under the determination criteria, wherein the determination criteria comprise any one or more of: a first determination criterion for determining whether a current pixel is an artificial image by using pixel values of pixels in a predetermined area in which the current pixel and neighboring pixels around the current pixel are present in a matrix arrangement, and by determining whether the predetermined area represents a flat area; a second determination criterion for determining whether the current pixel represents the artificial image by using gradation values of the pixels in the predetermined area to determine whether the predetermined area represents a gradation area; and a third determination criterion for determining whether the current pixel represents the artificial image by determining a color change in the predetermined area based on a dynamic range of a gradation value of each of the neighboring pixels.