Beiwei Zhang's Automatic Calibration and Reconstruction for Active Vision PDF

By Beiwei Zhang

ISBN-10: 9400726538

ISBN-13: 9789400726536

In this booklet, the layout of 2 new planar styles for digicam calibration of intrinsic parameters is addressed and a line-based technique for distortion correction is advised. The dynamic calibration of based gentle platforms, which encompass a digital camera and a projector can also be handled. additionally, the 3D Euclidean reconstruction through the use of the image-to-world transformation is investigated. finally, linear calibration algorithms for the catadioptric digital camera are thought of, and the homographic matrix and basic matrix are widely studied. In those equipment, analytic options are supplied for the computational potency and redundancy within the facts will be simply integrated to enhance reliability of the estimations. This quantity will as a result end up beneficial and functional software for researchers and practioners operating in photograph processing and machine imaginative and prescient and similar subjects.

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2. Extracting some points on both outer sides, denoted by mi = [ui vi ]T . e. l Tj mi = 0. So we have the constraints on the distortion parameters fi (k1 , k2 , p1 , p2 , s1 , s2 ) = aj (ui + δu (ui , vi )) + bj (vi + δv (ui , vi )) + cj = 0 3.

Broadly speaking, they can be classified into two categories: static coding and dynamic coding techniques. The static coding methods include binary codes [140] and Gray codes [141, 142], etc, where a sequence of patterns are used to generate the codeword for each pixel. This kind of techniques is often called time-multiplexing methods because the bits of the codeword are multiplexed in time. The advantage is that the pattern is simple and the resolution and accuracy of the reconstructed data can be very high.

The results for all levels were shown in Fig. 11. 6 pixel in most cases. In another simulation, we studied the calibration robustness of our algorithm against different levels of the noise. Here, the absolute estimation errors for the five elements in the camera matrix were recorded respectively. For each level of noise, we performed fifty random runs and averaged the obtained errors. 12 presented the results for all levels of noise, in which the absolute errors of f u and f v are denoted by RED and GREEN while s, u0 and v0 by BLUE, YELLOW and BLACK.

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Automatic Calibration and Reconstruction for Active Vision Systems by Beiwei Zhang


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