| 摘要 |
<p>The present invention is directed to an image processing device which is capable of discriminating the classification of a particular area of an image at improved accuracy. In an image processing device according to the present invention, an image input from an image signal input portion (1) is processed in the following steps: a vertical and horizontal complexity calculating circuit (15) determines absolute values Tx and Ty of differential densities between pixels neighboring to each other in vertical and horizontal directions, respectively, within a particular area of the image; a diagonal complexity calculating circuit (16) determines absolute values Rx and Ry of differential densities of pixels neighboring to each other in main diagonal and sub diagonal directions, respectively, within the particular area; a comparator circuit (17) compares sums of absolute values in respective directions and outputs a least sum as a complexity to an area discriminating portion (4); a difference-comparator portion (3) determines a difference between a maximal value Ma and a least value Mi of densities of pixels of the image data and outputs it as a comparison difference value to the area discriminating portion (4); and the area discriminating portion (4) discriminates the classification of the image area based on the above-mentioned complexity value and comparison difference value. <IMAGE></p> |
