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Method and system for measuring the shape of a reflective surface

A technology of reflecting surfaces and surface points, which is applied in radio wave measurement systems, measurement devices, optical devices, etc., can solve the problem of high equipment cost, and achieve the effect of improving measurement accuracy and improving measurement accuracy.

Inactive Publication Date: 2009-04-22
ISRA GLASS VISION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this has the disadvantage of high equipment costs, since each area of ​​the surface to be measured has to be covered with multiple graphics and / or cameras

Method used

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  • Method and system for measuring the shape of a reflective surface
  • Method and system for measuring the shape of a reflective surface
  • Method and system for measuring the shape of a reflective surface

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0040] exist figure 1 In , the basic configuration of a system 13 for measuring the shape of a reflective surface 14 of an object 3 to be measured is shown. The system 13 has a camera 1 which observes a graphic 15 of the graphic carrier 2 through a reflective surface 14 . In order to be able to determine the shape of the reflective surface 14 of the object 3 , the relationship between the camera 1 and the graphic 15 of the graphic carrier 2 must be known. For this purpose, the coordinate system 16 of the camera 1 and the coordinate system 17 of the graphic 15 are determined during the calibration process. In addition, the camera 1 as well as the graphics 15 can be calibrated in the stationary environment coordinate system 7 . This is not required; however it improves the clarity of the overall system. The coordinate system 16 of the camera 1 or the coordinate system 17 of the graphics 15 can be used as the stationary environment coordinate system instead of the stationary e...

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PUM

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Abstract

The invention describes a method for measuring the shape of a reflective surface (14) and a corresponding system which has at least one pattern (15) for reflection at the reflective surface (14) and at least one camera (1) for viewing the pattern (15) which is reflected at the surface (14) pixel by pixel, wherein the position and orientation of the camera (1) and of the pattern (15) are known. In order to reliably measure the shape of reflective surfaces with a small amount of equipment complexity, the viewing directions of the camera (1), which are known for the pixels (8), and the positions of the pattern (15), which correspond to the mapping of the reflected pattern (15) to pixels (8) of the camera (1), are used to determine the surface angle and surface height for the purpose of measuring the shape.

Description

technical field [0001] The invention relates to a method and a system for measuring the shape of a reflective surface, for which at least one pattern for reflection on the reflective surface and at least one camera for viewing the surface pixel by pixel are provided, wherein the position and orientation of the camera and the pattern are determined Known. In addition, a method for system calibration is described, which can be used in particular to determine the position and orientation of cameras and graphics. Measuring and calibrating the shape can also be done with conventional methods. Background technique [0002] Such methods, in which a figure of known shape and position is reflected by a reflective surface and the mirror image is observed and evaluated by a camera, are known to be used to measure the shape of the reflective surface. For example, DE 197 57106 A1 describes a device for automatically measuring the shape of spherical or aspherical reflective surface area...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/25
CPCG01B11/25G01B11/2518G01B11/026G01B21/30G01S7/4817G01B11/002
Inventor S·维南德A·鲁德特
Owner ISRA GLASS VISION