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Novel aspheric panoramic reflector design method

An aspheric and mirror technology, applied in the field of new aspheric panoramic mirror design, to eliminate distortion and improve imaging quality

Inactive Publication Date: 2016-01-20
HEILONGJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the current panoramic system, there is a large image distortion in the panorama image expansion. Many methods have been proposed to reduce and eliminate this distortion. Improving the surface profile of the mirror is a relatively direct and effective method, which can greatly improve the mirror image. linearity of expansion

Method used

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  • Novel aspheric panoramic reflector design method
  • Novel aspheric panoramic reflector design method
  • Novel aspheric panoramic reflector design method

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Embodiment 1

[0010] A new method for the design of aspheric mirrors for omnidirectional vision systems. The three parameters of the diameter, thickness and maximum incident angle of the mirror are determined. According to the maximum incident angle and the required processing accuracy, the appropriate number of sampling points is selected. According to The number of sampling points subdivides the diameter and thickness, and for a group of coaxial hyperbolas with the same focal length and linearly increasing real axis length, horizontally intercept curve segments and perform finite element splicing to obtain a surface curve that meets certain requirements, and substitute it into the iterative formula to obtain The coordinates of the sampling points, the sampling points generated by the iterative equation are fitted to the contour curve equation of the aspheric surface, and converted into the optical equation recognized by ZMAX.

[0011] The space angle between two adjacent incident light ray...

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Abstract

The invention discloses a novel aspheric reflector design method for an omnidirectional vision system. The method is characterized by comprising steps: the diameter, the thickness and the maximum incidence angle of the reflector are determined, a proper sampling point number is selected according to the maximum incidence angle and required processing precision, the diameter and the thickness are subdivided according to the sampling point number, as for a cluster of coaxial hyperbolic curves with the same focus and with real axis lengths increased linearly, curve segments are intercepted horizontally for finite element splicing to obtain a surface-type curve meeting certain requirements, an iterative formula is substituted, coordinates of the sampling points are obtained, the sampling points generated by an iterative equation are used for fitting an aspheric contour curve equation, and the equation is converted into ZMAX recognition optical equation.

Description

technical field [0001] The invention belongs to the field of omnidirectional visual processing, in particular to a design method of a novel aspheric panoramic mirror. Background technique [0002] With the continuous improvement of the panoramic vision system, panoramic vision technology has been initially applied in the field of vision and optics. In indoor and outdoor environments, panoramic vision is gradually being applied in areas such as surveillance and telereality. Due to its 360-degree viewing angle range, the most direct application of panoramic vision systems in outdoor environments is in the field of surveillance. The camera based on the omnidirectional visual sensor has very prominent advantages, its field of view is wide (360 degrees), and the information in a hemispheric field of view can be compressed into an image, and the amount of information in an image is larger, and any point in the panoramic image is Corresponds to a certain point in the monitoring s...

Claims

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Application Information

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IPC IPC(8): G02B5/10G02B27/00
CPCG02B5/10G02B27/0012
Inventor 梁燕华赵振民姜艳秋蔡成涛徐益民祁红岩李忠勤
Owner HEILONGJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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