Context-adaptive coded block pattern coding for H.264/AVC

Context-adaptive coded block pattern coding for H.264/AVC

For coding of quantized transform coefficients, a coded block pattern (CBP) is a key syntax element to represent the existence of coefficients in a macroblock efficiently. In H.264/AVC, the CBP is coded by using a fixed variable length coding table, called Exp-Golomb codes. However, since the CBP is highly affected by the change of quantization parameter (QP), in this paper, we show the CBP dis...

MLP for adaptive postprocessing block-coded images

A new technique based on the multilayer perceptron (MLP) neural network is proposed for blocking-artifact removal in block-coded images. The new method is based on the concept of learning-by-examples. The compressed image and its original uncompressed version are used to train the neural networks. In the developed scheme, inter-block slopes of the compressed image are used as input, the differe...

Fast mode decision algorithm for scalable video coding based on luminance coded block pattern

A fast mode decision algorithm is proposed to reduce the computation complexity of adaptive inter layer prediction method, which is a motion estimation algorithm for video compression in scalable video coding (SVC) encoder systems. SVC is standard as an extension of H.264/ AVC to provide multimedia services within variable transport environments and across various terminal systems. SVC supports...

Nonlinear adaptive processing of block coded images

Implementation and measurement: A 32 x 32 array is fabricated using a 0 . 8 ~ SPDM CMOS process. Each pixel occupies 88 x 9 2 p * with a fill factor of -25% as shown in Fig. 3. The dimensions of the whole chip are 4196 x 4196pmz. During the experiment, a patterned laser light spot is incident upon the chip. The output current of each pixel is accessed sequentially using two shift registers for ...

Adaptive block transforms for hybrid video coding