| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a technology which enables display fully using the dynamic range of a display grayscale without crushing a high frequency component, and suppresses an excessive pseudo component. <P>SOLUTION: A characteristic image detection interpolation unit 204 performs interpolation processing for increasing a luminance value in a low-luminance area which is partly present in an input image. A minimum value filter unit 205 executes minimum value filter processing on an image to which the interpolation processing has been performed, and a low pass filter 206 performs low pass filter processing on the image to which the minimum value filter processing has been performed, thereby generating a low-frequency component image. A subtractor 207 generates a high-frequency component image by subtracting the low-frequency component image from the input image. A coefficient unit 208 adds the luminance value of the high-frequency component image to the input image by a preset ratio K1, thereby generating a high-frequency component enhanced image. A selector 210 alternately outputs the low-frequency component image and the high-frequency component enhanced image. <P>COPYRIGHT: (C)2011,JPO&INPIT |
