POST-PROCESSING METHOD OF DIGITAL TRANSMISSION PICTURES

摘要

The method of is comprised of (a) getting an input video signal as an output value passed through a low pass filter and calculating an average dispersion value and present block value using the video signal and comparing an absolute value of subtraction of the input value from the output value with the critical value(21-26), (b) setting the output value as the value where the critical value is added to or subtracted from the input value upon the critical value being less than the absolute value, and increasing the number of passing times of the low pass filter upon the critical value being no less than the absolute value(27-30), (c) eliminating the blocking effect by passing the low pass filter predetermined number of times(31).