Element of interior orientation and distortion tester

An internal orientation element and tester technology, applied in the field of aviation and aerospace photogrammetry, can solve problems such as no longer applicable, and achieve the effect of accurate measurement, simplified structure, and convenience for operators.

Inactive Publication Date: 2010-06-09
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Because digital aerial cameras replace traditional photosensitive film with CCD or CMOS detectors, the mature verification methods and verification items of previous film-type aerial cameras will no longer be applicable.

Method used

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  • Element of interior orientation and distortion tester
  • Element of interior orientation and distortion tester

Examples

Experimental program
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Effect test

Embodiment Construction

[0024] see figure 2 , the present invention provides an internal orientation element and distortion tester, comprising a light source 1 and a turntable 3, the inner orientation element and distortion tester also includes a collimator 2; the collimator 2 is located between the light source 1 and the turntable 3, and It is placed on the same optical axis 5 as the light source 1.

[0025] The turntable 3 may be a two-dimensional turntable or a high-precision digital display two-dimensional turntable. The high-precision digital display two-dimensional turntable adopts a 27-bit shaft encoder and the resolution can reach 0.01". And the light source 1 is a point light source, a laser light source or other surface light sources.

[0026] When the present invention is in use, its specific test method is: install a star point target at the focal plane of the collimator 2 and illuminate it with the light source 1, form an infinite distance target through the collimator 2, and place the...

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PUM

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Abstract

The invention relates to an element of interior orientation and a distortion tester applied to a digital navigation camera. The distortion tester comprises a light source, a rotary table and a parallel light pipe, wherein the parallel light pipe is positioned between the light source and the rotary table and arranged on the same optical axis with the light source. The invention provides an element of interior orientation and a distortion tester with simple structure, convenient operation and high precision.

Description

technical field [0001] The invention relates to the field of aviation and aerospace photogrammetry, in particular to an internal orientation element and distortion tester applied to a digital aerial camera. Background technique [0002] Photogrammetry has developed rapidly in the application field of topographic map compilation, gradually forming a photogrammetry technology system and a complex photogrammetry instrument system. In photogrammetry, a photogrammetry camera is used to take pictures of the earth's surface or other ground features from a long distance, and then measure the spatial distribution of the ground features on the photogrammetry instrument. It is an important means of surveying and drawing topographic maps and other special maps, and an important part of remote sensing technology. [0003] There are generally two types of cameras: [0004] One is the traditional film aerial camera. The imaging device uses photosensitive film to record the image. First...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C25/00G01C11/02
Inventor 张周锋赵建科周艳
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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