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Covered-uncovered problem and noise interference are key problems in optical flow estimation of nature scene images. In this paper, the visible scene areas are labeled by visible matrix and the distribution of noise is approximately described with normal probability distribution. The arithmetic expressions of optical flow field in visible scene areas are deduced in the Bayes framework. The results...
Evaluation function is an important item to measure the quality of images in auto-focusing systems. This paper introduces four categories of evaluation functions which are respectively based on gradient, correlation, statistics and transform. These functions formally differ from each other and their performances are not consistent when dealing with different images. The same function also performs...
In order to improve the accuracy of image detection and target recognition, this paper presents an image distortion correction algorithm based on quadrilateral fractal approach controlling points. This method uses standard lattice image to be the measuring target, determines the coordinate by combining mathematical morphology and sliding neighborhood operation, and then Adopt simple linear regression...
Based on the comparison of K-means algorithm and ant colony optimization (ACO) algorithm in image clustering, this essay proposed a K-means-ACO algorithm to solve the problem of misclassification of K-means and slow convergence of ACO. K-means-ACO algorithm takes the results of K-means as the elicitation information of ACO, which adds illumination probability and illumination pixels in ants seeking...
Based on the idea of combining the embedded system with image processing, this paper designs an embedded image acquisition system, and separately designs and implements its hardware, software, WEB management module and the system function modules. The image acquisition system can carry out remote management by the user host through the WEB, capture target image and process in accordance with the relevant...
A new CCD Auto-Guiding-to-Star System is proposed to minimize the tracking errors of the telescope tracking system, and also to improve the accuracies of observation. This paper discusses the key algorithms of CCD Auto-guiding Star System, and design of the software which can connect the workstation with the CCD camera to collect, analyze and process data. This system has showed reliability and high...
Speeding is recognized as a major contributing factor in traffic accidents on freeway. In order to reduce speed-related accidents, accurate real-time speed limit enforcement system is very critical to freeway. This paper presents an automatic speed limit enforcement system on freeway based on cameras and the Field Programmable Gate Array (FPGA) implementation to achieve this objective. Taking the...
In this paper, we present a novel method for human-computer interaction based on finger motion detection. Image processing is used to get the position, motion direction and movement of the marked figure in the video image, and then associate them with the cursor position, motion direction and mouse function using windows underlying functions. Experimental results show that the method can accurately...
Normally cokriging, which is extended by kriging to take into account extra information and viewed as an unbiased prediction method with minimum prediction variance, integrates the information carried by a secondary variable related to the primary variable being estimated. The linear model of coregionalization (LMC) and the Markov model 1 (MM1) are proposed for cokriging to fulfill the integration...
The following topics are dealt with: computer theory; image processing; software engineering; wireless network; computational geometry; fuzzy set theory; and data handling.
The images in computer generally can be divided into two major categories: vector graphics and bitmap. Trough real-time tracing the existing artwork, Illustrator allows users to convert the picture to vector paths or real-time color object. It is easy to input or output more beautiful images in the computer using of the digital camera or scanner. The saved images can be opened in Photoshop and the...
In this paper, a new multi-focus image fusion algorithm based on the Nonsubsampled Contourlet Transform (NSCT) is proposed. As a more effective multi-resolution analysis method, NSCT can give a better performance in image processing than the existing methods. Because Human Visual system(HVS) can only be sensitivity to regional characteristic rather than single pixel characteristic, region variance...
A method of motion detection and tracking based on multi-camera surveillance system is presented in this paper. First detecting moving blocks by dynamic template, and then check the moving blocks, get the elements of computing movement blocks such as spatial characteristics and histogram then detecting and tracking the moving objects according to characteristics of elements. Experiments show that...
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