CONTOUR CORRECTING METHOD, IMAGE PROCESSING DEVICE AND DISPLAY DEVICE

摘要

It is an object to provide an edge adjustment method for performing adjustment such as edge enhancement suited to the characteristics of an input image, an image processing device for performing edge adjustment by using such method, and a display apparatus for displaying the image performed with the edge adjustment. A noise removing filter 21 removes noise from an input image and an edge component extracting unit 23 extracts edge components. The edge components are extracted by calculating a difference between the input image and a smoothed image, which is obtained by smoothing the input image in a smoothed image generating portion 24. An edge component comparing unit 26 compares the extracted edge components with a threshold value and a sum calculating unit 27 calculates the sum of the edge components greater than the threshold value. A control circuit 11 determines the enhancement degree of the edges based on the sum and averaged luminance of the input image calculated by an average luminance calculating unit 22. An enhancement degree adjustment unit 28 adjusts the determined enhancement degree, and an edge component enhancement unit 30 enhances the edge components based on this enhancement degree and adds it to the input image to perform edge enhancement processing.