Patent ID: 6763143
Filing Date: 2004-07-13
Classification: G06T

Abstract:
A signal processing method for carrying out, on a discrete signal made up of signal components obtained by sampling an original signal in a plurality of sampling positions, linear interpolation processing to obtain interpolation signal components for interpolating positions other than the sampling positions, wherein the improvement comprises the step of:carrying out, on the linearly interpolated signal components obtained by carrying out the linear interpolation processing on the discrete signal, variable characteristic filter processing to compensate for low-pass characteristics in the linear interpolation processing, wherein the compensation is based upon position deviations between the sampling positions and the interpolating positions, and wherein when the position deviation of the interpolating position from the sampling position is a maximum, the compensation is maximized, when the interpolating position approaches the sampling position, the compensation is decreased and when the interpolating position coincides with the sampling position, the compensation is zero.