Patent ID: 6157749
Filing Date: 2000-12-05
Classification: G06T

Abstract:
An image processing apparatus for converting low-resolution information into high-resolution information to increase the number of pixels of input image information, comprising:first window forming means for forming a first window for referring to nearest neighbor pixels of a low-resolution pixel of interest;detecting means for detecting a plurality of representative values from the first window;converting means for converting a value of the pixel of interest by an adaptive low-pass filter (LPF);second window forming means for forming a second window for referring to converted values of the nearest neighbor pixels including the pixel of interest;linear interpolating means for performing linear interpolation on the basis of pixel value information in the first window or converted value information in the second window; andnonlinear interpolating means for performing nonlinear interpolation by executing a plurality of different product-sum operations based on linearly interpolated values from said linear interpolating means and the representative values, and for obtaining high-resolution information, using results of the executed plurality of different product-sum operations.