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One of the key issues of face recognition is to extract the features of face images, and a new method of feature extraction, two-dimensional discriminate locality preserving projections (2D-DLPP), is proposed. 2D-DLPP benefits from three techniques, i.e., locality preserving projections (LPP), image based projection and discriminant analysis. Firstly, LPP is an effective feature extraction method...
The price of beef is determined by the carcass grade,and beef grade usually evaluated subjectively based on marbling level. It is a good method to determine marbling level with computer vision instead of person. The method assessing beef grade based on image processing was studied in this paper.The image of longissimus dorsi muscle was segmented using threshold, dilation and erosion, and the parameters...
A method named PMMR (previously merging for masking repeats) is proposed in this paper for masking repeats in DNA fragment assembly. The method firstly identifies and counts the fragments including a same k-mer substring by scanning the shotgun data set. Then, it merges these fragments by the same k-mer substring. Based on merging, the method can not only mark the position of the repeats, but also...
This paper has brought forth a zero-watermark algorithm for video which is based on the Krawtchouk moment invariants of original images to counterattack RST attack. Due to the stability of the seven lower Krawtchouk moment invariants exhibited in geometrical transformation, the seven moment invariants of the video frames should be calculated first and then construct the watermark sequence with zero-watermarking...
Digital watermarking is an effective way to protect copyright. Using the characteristics of discrete wavelet transform (DWT) and singular value decomposition (SVD), a digital image watermarking algorithm based on DWT and SVD is proposed. The original image is transformed by DWT and SVD and the watermarking image is processed by Arnold transform and SVD. The watermarking image processed is embedded...
One method of 3D face modeling is constructing a subspace of 3D face image by a set of personspsila 3D face image. It is crucial to register each 3D face image with a reference face image. The current state of the art in image registration is best represented by the well-known iterative closest point (ICP) algorithm and numerous variations on it. Although this method is effective in many domains,...
In the view of characteristics for coke micrograph, a segmentation algorithm combining mean shift and edge confidence, is proposed. Firstly, the edge confidence of image pixels is calculated, and with the edge confidence the weighting function of mean shift algorithm is computed, the sampling points of feature space are weighted in order to improve the accuracy of detected modes. Secondly, coke image...
Multi-view autostereoscopic three-dimensional (3D) display has been one of the most popular research issues in the world. And 3D displays are classified into two types: stereoscopic 3D display and autostereoscopic 3D display. The former includes head mount system, anaglyph system, polarized filter system, field sequential system and so on. The latter is also called true 3D display, it provides 3D...
Based on the exponential trait of grey model and the definition of integral, the reconstruction method of GM(1, 1) modelpsilas background value of non-equal distance sequence was put forward and a kind of non-equidistant optimum grey model GM(1, 1) with optimizing modified the nth components taken as initial value to test data process was proposed, the method of precision inspection was introduced...
Focused Web crawler collects relevant Web pages of interested topics from the Internet. Most searchers have studied strategy based on an initial model to gather as many relevant Web pages as possible in the focused Web crawling. However, Web information continually change over time, the initial model representing outdated information canpsilat reflect userpsilas interested topics rightly. In this...
The positive impulsive noise may be caused by electron radiation in the photo-electronic imaging system. A novel nonlinear filter based on row and column filtering(RCF) was presented and its denoise and detail preservation properties were analyzed. According to the statistical behaviors of each row and column of an image, the pixel value is determined by its neighborhood. Each row is operated firstly...
In recent, a Markov Process based approach has been proposed to effective attacking JPEG Steganography, and the experimental works had demonstrated that scheme has outperformed the existing steganalyzers in attacking JPEG steganography. To improve that original Markov Process based approach, several variants based that scheme has been proposed and experimented including using JPEG 1D array, using...
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