False contour correction method and display apparatus to be applied to the same

Pseudo outline removal process according to the invention, the first input image and the number of bits of the first input image (bit depth) to lower the second based on the difference in brightness value between the input image, the first input brightness from the image value is a constant by removing the flat area to measure a contrast for each direction in the step of detecting the position information of the contour, the flat area to remove the first input image, and detecting the direction information and location information of the pseudo contour, the contour on the basis of the contrast as measured of the location information by using the direction information and location information of the step to separate the false contour (false contour) region and the edge region, and a false contour smoothes the false contour region includes the step of removing the false contour in the first input image . Thus, by reducing the number of false contour detection bit after removing the image and the original input image automatically as a flat area by using the difference in brightness value between, it is possible to increase the accuracy of detecting the false contour. Further, it is possible to by a doctor performs smoothing only the contour preventing deterioration of the signal component. Pseudo contours, edges, the contrast, the directional smoothing filter, bit (bit dpeth)