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The following topics are dealt with: image processing; image analysis; intelligent control; automation; intelligent computing; network and communication and CAD/CAM.
An improve method of the block wise non-local means (BNL - means) is proposed for removing noise in the digital image. This method consists of the spectral decomposition of the Gaussian weighted matrix, the pseudo filter constructions, computations of the pseudo weighted coefficients and image denoising using the weighted sum of Gaussian. Experimental results show that this method is simpler, more...
This paper proposes a Chinese coin recognition method based on unwrapped image and rotation invariant template matching. At first unwrap the reference coin and the specimen coin, which makes a rotation of the coins convert to a translation of the profile. Then lengthened the unwrapped specimen coin image and the unwrapped reference coin image always lies in the unwrapped specimen if they are the same...
Rock evaluation and return are important work of lunar exploration, they should be done by the lunar rover's hardware and software. A series of algorithms related to rock segmentation, stereo matching and 3D reconstruction which are realized by stereo vision are described in this paper. The experiments based on real image show the validity of the algorithms.
It is a frequently encountered problem to calculate the area of target region in image processing. Based on an improved algorithm of contour extracting, a method for calculating the area of target region was advanced. First, the contour is extracted from the binary image, while note the location and type information of the contour points. Next, the area of target region is calculated by weighting...
The paper researches the issue that fundamental matrix is recovered in images. Firstly, the corners are detected by Harris operator, and matches cross-correlation corners. According to the definition of polar equation, the polar of feature point must pass corresponding point in matching images. Then, to extract correctly matching points and eliminate error by the criterion which is the distance between...
The purpose of moving targets tracking is to determine the trajectories of moving targets, the key of which is to establish the corresponding relationships between the detected prospect targets and the tracked moving targets. The established corresponding relations are equivalent to the matching problem of target features in consecutive image frames. In the paper, Kalman filter is used as the motion...
This paper presents a new Line Enhance Active Contour model (LEAC model) to detect the flame front boundaries from high speed Planar Laser Induced Fluorescence (PLIF) images. The model first enhances the crack region and the gradient of flame front by the Line Enhance Filtering algorithm, and then extracts flame front boundaries and crake edges from the enhanced PLIF images using the CV model. We...
The illumination variation problem is still an open question in face recognition in uncontrolled environment. To cope with this problem, many methods are proposed to strengthen illumination compensation and feature enhancement, among which quotient image based methods are reported to be a simple yet practical technique. Recently the SQI, MQI and DMQI are reported to obtain good results in illumination...
The problems of large numbers of image data and concurrent client connection requests to the remote video server in C / S mode was resolved by using IOCP (I/O Completion Port) mechanism in image characteristic transmission. The multiple concurrent threads are managed and controlled by IOCP mechanism which makes the system achieve an efficient network performance. The image processing and transmission...
For a driver fatigue warning system, one of the most important problems to solve is eye detection and recognition. The blink information was used to preliminary eye location. Modified Susan operator of eye inner corner extraction to accurate eye location. According to the characteristics of the external environment are less prone to interference from eye inner corner, small template of the eye inner...
Traditional algorithm of image enhancement enhances the contrast grade and noise of image at the same time. So, noise reduction is needed. Wavelet enhancement considers the spatial domain and frequency domain of image signal, but not the nonlinearity of vision. Aim at the problem of enhanced noise in image enhancement, a new algorithm for image enhancement based on wavelet multiscale is proposed by...
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