Patent Document ID: 20110243228
Application ID: 12750401
Patent Flag: 0

Claim One:
1. A video coding apparatus, comprising: a unit for providing a video signal; a prediction mode determination unit that determines whether a frame in the video signal is an inter frame or an intra frame according to the prediction mode of the frame; an ABT-based JND model generation unit that generates an ABT-based JND model which contains one or more JND thresholds as determined by a psychophysical experiment based on the visual perception model; and an ABT-based JND filter that filters one or more residual coefficients by discarding one or more residual coefficients which are below the JND thresholds of the ABT-based JND model and subtracting the JND thresholds from one or more residual coefficients which are larger than the JND thresholds of the ABT-based JND model so that a signal with filtered residual coefficients is output.