1. Design of Stereo Omni-Directional Vision Sensors with Full Sphere View and without Dead Angle
- Author
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YiPing Tang and YiPing Tang
- Abstract
In order to obtain real-time 360°×360° entire full sphere view scope video, this chapter presents a secondary catadioptric principle and structure of ODVS, and designs a catadioptric mirror, use fourth-order Runge-Kutta algorithm to obtain numerical solution of the reflection mirror by the design method of combination lens integrating ODVS with wide-angle lens to eliminate the inherent dead angle of the original ODVS, and then fixes the two ODVS devices without dead angle back to back, finally stitches the 360°×360° video image seamlessly by unwrapping algorithm. The experimental results show that the design of ODVS device can obtain real-time 360°×360° view scope video image. The software which we develop for the full sphere ODVS to do experimental studies runs in the operation system of Windows XP with CPU of 1.7Celeron and 512M RAM. When the resolution of camera is 640×480, the system can handle 15 frames per second, and basically satisfy the requirements of real-time video data acquisition. Because each ODVS of the composition of full sphere ODVS adopts average angular resolution to design, the parameters of the two ODVS fixed back to back are fully consistent and the point of imaging plane and the incidence angle has a linear relationship, thus it can make sure the imaging of transition zone of the integrated ODVS is continuous. For the reflection mirror design, this chapter uses Runge-Kutta algorithm to obtain the numerical solution of the reflection mirror of ODVS and validates the catadioptric mirror by the simulation experiment. This method can guide design of ODVS mirror, and provide a theoretical support to ODVS reflection mirror design. Fig. 10 shows the unwrapping stitching image exists stitching error. The reason is that the central axis of the upper and the lower ODVS has error in manufacturing and assembly processing. It is difficult to ensure the two ODVS fixed back to back on the same axis line
- Published
- 2021
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