METHOD FOR REMOVING BLOCKING ARTIFACT INCLUDED IN IMAGE ENCODED BY BLOCK DISCRETE COSINE TRANSFORM TO EFFECTIVELY REPRODUCE THE IMAGE

摘要

PURPOSE: A method for removing a blocking artifact included in an image encoded by BDCT(Block Discrete Cosine Transform) is provided to effectively reproduce a received image by removing the blocking artifact without deleting the edge of the received image and to reduce the quantity of calculations for removing the blocking artifact to process the received image in real time. CONSTITUTION: An image encoded by BDCT is received. The frequency characteristic of the received image is measured. The received image is moved by at least one pixel in column and row directions, and the frequency characteristic of the moved image is measured. When the difference between the frequency characteristic of the received image and the frequency characteristic of the moved image exceeds a predetermined range, a high-frequency component of the image is removed.