| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an image processing apparatus capable of decreasing a ringing phenomenon in an edge area of an image signal while minimizing a bleeding phenomenon in the edge area by applying sinc interpolation. <P>SOLUTION: An image processing apparatus relating to the present invention to interpolate an input image signal having a first resolution into an output image signal having a second resolution according to a predetermined resolution conversion ratio includes a frequency determining section to detect a variation in a frequency of the input image signal to determine a frequency domain that corresponds to the input image signal, a control section to calculate interpolation positions of the input image signal according to the predetermined resolution conversion ratio, a coefficient storage section to store interpolation coefficients that correspond to the calculated interpolation positions, an interpolation filter to receive the interpolation coefficients from the coefficient storage section and to interpolate the input image signal accordingly, and an interpolation value correcting section to correct the output image signal interpolated from the input image signal outputted from the interpolation filter based on information as to the frequency domain of the input image signal determined by the frequency determining section. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
