Patent ID: 8351721
Filing Date: 2013-01-08
Classification: H04N

Abstract:
1. An image encoding device for encoding for each unit block by performing orthogonal conversion, quantization, and encoding on an input image signal configured by a plurality of unit blocks having a plurality of pixels, comprising: intra-signal predicting means for calculating intra-signal prediction information used for performing intra-signal prediction on each pixel corresponding to a region to be encoded of an input image signal based on a reconfigured image signal corresponding to an already-encoded region obtained by decoding the orthogonally converted and quantized image signal; intra-signal compensating means for obtaining an intra-signal prediction signal from the intra-signal prediction information from the intra-signal predicting means and the reconfigured image signal; signal-to-signal predicting means for separating an intra-signal prediction residual signal obtained by performing difference processing between the input image signal that is the region to be encoded and the intra-signal prediction signal into a reference signal and a signal to be predicted and calculating signal-to-signal prediction information used for performing signal-to-signal prediction on each pixel of the signal to be predicted corresponding to each pixel of the reference signal; and signal-to-signal compensating means for obtaining a signal-to-signal prediction signal of the region to be encoded from a decoded intra-signal prediction residual signal obtained by decoding the orthogonally converted and quantized image signal and the signal-to-signal prediction information from the signal-to-signal predicting means, wherein each pixel of the signal to be predicted is encoded by performing the orthogonal conversion, the quantization, and the encoding on the signal-to-signal prediction residual signal obtained by performing the difference processing between the intra-signal prediction residual signal and the signal-to-signal prediction signal.