Patent ID: 8331717
Filing Date: 2012-12-11
Classification: H04N

Abstract:
1. A method of removing block noise, comprising: receiving pixel values for a first pixel and a second pixel on opposite sides of a boundary between two adjacent blocks, and acquiring a high-pass filter value of the first pixel and the second pixel; obtaining a weight of the first pixel and the second pixel based on the high-pass filter value of the first pixel and the second pixel; obtaining a low-pass filter value of the first pixel and a low-pass filter value of the second pixel; and obtaining an adjusted value of the low-pass filter value of the first pixel and an adjusted value of the low-pass filter value of the second pixel based on the weight of the first pixel and the second pixel, the weight of the first pixel and the second pixel being obtained based on the high-pass filter value of the first pixel and the second pixel.