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An improved codebook model is presented to efficiently segment foreground from dynamic scenes in the paper. The model divides video frames into blocks and takes into account the spatial relations between pixels and the adjacent pixels in the blocks rather than seen the pixels independent. It uses the block means instead of pixel wises to construct codebooks. After comparison the brightness distortion...
This paper presents an audio aggregation zero-watermark algorithm based on (k, n/k=n), which using the nature of fragile watermark to realize audio aggregation certification. Firstly, using lifting wavelet transform (LWT) technique to each audio work in the aggregation which includes n audio works. Secondly, watermark was distributed into n shares by (k, n) threshold scheme. Finally, we can get n...
Feature extraction for object representation plays an important role in image denoising system. As the spatial histograms consist of marginal distribution of image over local patches, object texture and shape are simultaneously preserved by the spatial histogram representation. In this paper, we propose methods of compressive sensing for spatial histogram-based object detection. We employ Fisher criterion...
In order to avoid the flaw while keeping all the merits of image encryption scheme based on line maps, an improved image encryption scheme is proposed, which extended the original 2D scheme to 3D. An image with size NtimesM is firstly depicted by a 3D bit matrix, and then it is supposed as composed of 8timesM vectors with size N. Line maps are used to stretch the vectors to an array, while the fold...
In allusion to the autonomous behavior of autonomous underwater vehicle (AUV), it is difficult to research its adaptability and reaction to the environment at present. According to the problems of motion planning in uncertain environment, behavior models were proposed and explained for AUV horizontal motion. Models for goal forward behavior, obstacle avoiding behavior and macro-behavior for horizontal...
Automatic facial expression recognition is one of the great challenges in facial expression recognition field. An algrithom of automatic facial expression recognition is proposed based on Local Binary Patterns of local areas (LLBP)in this work. First, the position of eye balls is fixed by projection method. Then the local areas of the eyes and mouthpsilas neighbourhood could be determined through...
Applying image processing technologies to pedestrian detection has been a hot research topic in intelligent transportation systems (ITS). However, the existing video-based algorithms to extract background image may suffer their inefficiency in detecting slow or static pedestrians. To fill the gap, an improved Gaussian mixture model (GMM) for pedestrian detection is proposed in this paper. Three novel...
Pedestrian detection is an important part of intelligent transportation systems (ITS) application. Many researches have been contributed to apply image processing technologies to pedestrian detection. A new robust method for pedestrian tracking is proposed in this paper. Pedestrian tracking is achieved by using feature fusion and prediction methodology. The proposed method integrates spatial position,...
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