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Side Information (SI) generation is a key function in the DVC decoder, and plays a critical impact on the compression efficiency. This paper proposes an improved side information generation scheme of transform domain distributed video coding considering a novel content-based side information refinement technique, which is performed with the color and texture features to segment the side information...
Background subtraction is an effective method in detecting moving objects in a static scene, which requires a fixed camera, and a static background. Illumination changing is a challenging problem which causes failure of background subtraction. Most background subtract algorithms require the illumination changing slowly, so the object can be tracked accurately and the background is easy to update....
This paper proposed a new 2-dimension-code-like feature based on the Haar-like feature proposed by Viola et al. The feature can be calculated in different scales rapidly once the integral image is calculated and this characteristic is inherited from the Haar-like feature. Instead of reducing the dimensions after calculating redundant features, we calculate feature vectors with fixed dimensions for...
Background subtraction is an effective method in detecting moving objects in a static scene, which requires a fixed camera, and a static background. Illumination changing is a challenging problem which causes failure of background subtraction. Most background subtract algorithms require the illumination changing slowly, so the object can be tracked accurately and the background is easy to update....
A novel local image feature description method, which originates from the frameworks of classical SIFT (Scale Invariant Feature Transform) and SURF (Speeded up Robust Features), is presented in this paper. The design of our descriptor innovatively adopts sub-regions overlapped each other in feature description. Coordinated with overlapping sub-regions, we analyze different cell normalization methods...
Bad weather, such as fog and haze can significantly degrade the visibility of a scene. In order to overcome it, some approaches have been proposed. In this paper, we proposed a novel defogging algorithm just based on a single image. Firstly, we employ the method of dark channel prior as a foundation of our algorithm. After experimental analysis about the dark channel prior haze removal, we find that...
Texture-based method (TBM) using local binary patterns (LBP) proposed in the work of Heikkila et al. (2004) is a successful solution to background subtraction especially for dynamic background scenes. However, it usually suffers from inaccuracy of the shapes of segmentation results and slow adaptation to the current situation. In this paper, we present an improved TBM that solves the two problems...
In H.264/AVC, intra-prediction is utilized in the spatial domain. There are two types of intra prediction for luma-intra 16 times 16 and Intra 4 times 4. Four and nine modes are supported by intra 16 times 16 and intra 4 times 4, respectively. The full search is used to select the best modes in H.264, which is very computationally expensive. In order to speed up the mode selection procedure, a fast...
A novel algorithm for coding the intra 4times4 prediction mode selection information with combined spatial correlation of coded neighboring blocks is proposed in this work. A large number of bits are used to transmit the prediction modes of each intra coded block in the H.264/AVC standard, and these bits cost becomes more sensitive in the case of low bit rate application. The proposed algorithm utilizing...
In the scalable video coding (SVC) standard, interlayer intra prediction (ILIP) is one of the most fundamental coding tools used to reduce bit rate. The prediction block of macroblock (MB) in enhancement layer (EL) is obtained by upsampling the co-located base layer (BL) block. In this paper, we propose a new ILIP method by introducing the adaptive signal processing techniques. Adaptive Wiener filters,...
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