| 摘要 |
<p>An edge detecting circuit (7)detects existence of an edge component of an image from four pixels adjacent to a pixel to be interpolated, and in case that the edge component exists, further detects that the edge component is which kind of edge component out of a skew edge, a longitudinal edge and a transversal edge. A coefficient generating circuit (12) selects weighting coefficients (Co00, Co10, Co01 and Co11) so that they become small for a pixel which can be the cause of damaging the edge component, from a spatial position relation of the pixel to be generated for the adjacent four pixels and the kind of the detected edge component. Multipliers (8, 9, 10 and 11) multiply original video signals by the coefficients (Co00, Co10, Co01 and Co11), respectively, which were output from the coefficient generating circuit (12), and results thereof are output to a bilinear interpolation circuit (18). The bilinear interpolation circuit (18) conducts pixelconversion of a pixel to be generated by applying a bilinear interpolation method to the multiplied results. <IMAGE></p> |
