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In the field of machine vision, a very important task is to use the visual information to estimate the attitude of camera. The traditional approach is to embed a visual mark in the image's texture for attitude estimation. However, a visual mark would spoil the unity of the image. This paper introduces a novel attitude estimation method using the spatial frequency domain analysis. In this method, the...
In allusion to the low contrast of the image between the backdrop and the small blood vessels, the blurred and fuzzy background of coronary artery image, a new blood vessel extraction method based on degree is proposed. First of all, two enhanced coronary angiograms are obtained from the original image by using two different image enhancement methods. Secondly, coronary arteries are extracted from...
This paper analyzes the nature of university curriculum problems (Time table Problem TTP), as well as the strengths and weaknesses of the problem solving, and evaluate some time table problem's arithmetic performance. The basic algorithm including greedy algorithm, simulated annealing algorithm, genetic algorithm and the improved genetic search algorithm by author. This thesis discover the use of...
According to the matching differences cased by cardiac non-rigid motion between angiographic images before and after injected in subtract angiography which is most widely used in diagnosis, a new algorithm based on a?? trous wavelet of rotary Gaussian with adaptive space coefficient and segmentation based on transition region is put forward to in this paper. The angiographic image is pretreated by...
Aiming at the complex background of coronary angiograms, weak contrast between the coronary arteries and the background, a new segmentation method based on transition region extraction is proposed. Firstly, we construct 6 different Gaussian templates that are used to enhance the coronary angiograms. Then the transition region is extracted by using local entropy-based on transition region extraction...
After introducing the wireless network communication technology ZigBee and the features, advantages and application rule of the wireless single chip microcomputer cc2430, which is a true system-on-chip (SOC) loading ZigBee technology, the article introduced the design method of mine alarm system based on ZigBee technology. The composition of the mine alarm system and the design features of hardware...
To prevent an intelligent vehicle from departing the lane in the vision-based navigation, an integrated method based on image processing is proposed to detect the road boundary and lane marking synchronously in structural road environment. The feature of the road boundary is extracted by means of gradient magnitude and gradient direction of pixels. And the lane marking feature is extracted by self-adaptive...
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