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This research proposed a method for adaptive Lagrange multiplier determination for rate-distortion optimization with dynamic texture in High Efficiency Video Coding (HEVC). Inspired by the experimental results of the Lagrange multiplier selection test, the presented approach adaptively predicts the optimum Lagrange multiplier for different dynamic texture sequences, based on the features of the dynamic...
In the quest of perceptually optimized video coding, coding textures is representing a challenging case. While a large body of research was put into the perception of static textures, dynamic textures are still not sufficiently explored. In this paper, we focus on short term consistent patches, known as dynamic textures, with a very limited spatial and temporal extent. We estimated the visual distortion...
Statistical redundancies have been the dominant target in the image/video compression standards. Perceptually, there exists further redundancies that can be removed to further enhance the compression efficiency. In this paper, we considered short term homogeneous patches that fall into the foveal vision as dynamic textures, for which a psychophysical test was used to estimate their amount of perceptual...
Dynamic texture motions like flowing water, motion of leaves etc. have a complex random character. A sequence containing such a content is challenging to encode even when using state of the art High Efficiency Video Coding (HEVC) especially, if the available bandwidth is limited. It is observed that often when predicting dynamic textures, codec switches to intra prediction. At lower rates, dynamic...
Due to their rapid change over time, dynamic textures represent challenging contents for the video compression standards. While several studies proposed different coding techniques, such as synthesis based coding, they mostly lack the perceptual studies on the perceived distortions. In this paper, a framework of perceptually optimized dynamic texture compression is presented. It is based on a psychophysically...
Textures are one of the main characteristics of the visual scene. Perceptually, their details are less important than their semantic meaning. This property has been exploited in many texture coding (content based video coding) approaches by removing parts of the textures in the encoder and synthesizing them at the decoder side. Such an approach would necessarily need modification of the coding process...
3D video is a new technology, which requires transmission of depth data alongside conventional 2D video. The additional depth information allows to synthesize arbitrary viewpoints at the receiver for adaptation of perceived depth impression and for driving of multi-view auto-stereoscopic displays. Depth maps typically show different signal characteristics compared to textured video data. Piecewise...
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