Patent ID: 9124901
Filing Date: 2015-09-01
Classification: H04N

Abstract:
1. A video encoding method performed by a video encoding apparatus, the method comprising: generating a predicted block by predicting a current block; generating a residual block by subtracting the predicted block from the current block; generating quantized transform coefficients by transforming and quantizing the residual block; generating the encoded image data by encoding the quantized transform coefficients; reconstructing the residual block by inversely quantizing and inversely transforming the quantized transform coefficients; generating a reconstructed block by adding the reconstructed residual block to the predicted block; generating an error block by subtracting the reconstructed block from the current block; generating encoded low frequency data by encoding one or more low frequency components of the error block, and reconstructing the current block by adding the reconstructed block and a reconstructed error block generated from the error block.