Stabilized binoculars testing method and device realized by means of electronic imaging

A technology of electronic imaging and testing methods, which is applied in the direction of measuring devices, machine/structural component testing, optical instrument testing, etc. It can solve problems such as difficult to define technical indicators, lack of objective testing standards, and inability to analyze intermediate processes of image stabilization.

Inactive Publication Date: 2005-06-29
ZHEJIANG UNIV
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Problems solved by technology

[0004] At present, people's tests on the effect of optical image stabilization are based on subjective judgments by comparing the images seen before and after image stabilization. On the one hand, such tests lack objective test standards, and on the other hand, they only have qualitative conclusions about whether the image stabilization system is effective. It is impossible to quantitatively compare multiple image stabilization telescopes, and it is impossible to further analyze the intermediate process of image stabilization, so it is also difficult to define technical indicators in this regard

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  • Stabilized binoculars testing method and device realized by means of electronic imaging
  • Stabilized binoculars testing method and device realized by means of electronic imaging
  • Stabilized binoculars testing method and device realized by means of electronic imaging

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Embodiment Construction

[0018] The test method includes the calculation of the image entropy of a single image and the acquisition of the test curve of the image sequence.

[0019] The image entropy of a single image is according to the formula H = - Σ i = 0 n p i ln ( p i ) Calculate, where n is the number of gray levels, i is the gray value of each pixel, p i Is the relative probability of pixels appearing on each gray level i, and then use the time of acquiring the image as the abscissa, and the image entropy of each image as the ordinate to draw the test curve of the image sequence.

[0020] Test device such as figure 1 As shown, it includes an imaging target 1, a vibrating platform 2, an image stabilizing telescope 3, an image sensor 4, an analog-to...

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Abstract

It is a stable image telescope test method and its device through electrical imaging means. The method is to use image entropy to evaluate the stability of image and to draw the test curve of the image entropy to evaluate the stability of the image system. The test device is to fix the telescope on the vibration bench and to fix the image sensor on one drawtube end of eye observation position of the telescope and to fix the imaging calibration board on the field of vision of the telescope and to join the image sensor to the computer through A/D converter card, wherein, the imaging calibration board is composed of black and white strips distributing along level and vertical direction.

Description

Technical field [0001] The invention relates to an image stabilization telescope test method and device realized by electronic imaging means. Background technique [0002] The image stabilization system can be divided into three categories according to the principle of action: mechanical image stabilization, optical image stabilization and electronic image stabilization. The mechanical image stabilization places the entire system on a stable platform. The system vibration signal is obtained through the change of the attitude angle of the sensitive carrier of the inertial element. After amplification, the motor or piezoelectric ceramic is driven to maintain the imaging system as a whole or the key components of image stabilization. To ensure the stability of the image. Optical image stabilization is to set up some optical elements (such as variable light wedge, Peconn prism) in the optical path as compensation for unstable images. The electronic image stabilization is to directly ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M11/00G01M11/02
Inventor 李奇徐之海冯华君严安柱项舒年
Owner ZHEJIANG UNIV
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