Patent ID: 8761264
Filing Date: 2014-06-24
Classification: H04N

Abstract:
1. An apparatus comprising: a transformer to divide one picture of an input video signal into element blocks composed of a plurality of pixels and to perform orthogonal transformation on each of the element blocks, to thereby obtain transformation coefficients; a quantizer to quantize each of the transformation coefficients, using a quantization parameter, to thereby provide quantized results; a coder to code the quantization parameter, when all of the transformation coefficients are not zero; a decoded picture generator to inversely quantize and then inversely and orthogonally transform the quantized results to generate a reference picture signal for a motion compensation prediction; a filter to filter the reference picture signal at a filtering strength corresponding to the quantization parameter, the quantization parameter being available when a non-zero effective transformation coefficient is present with respect to the element blocks; and a controller to: