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Color television imaging system spatial resolution detecting device

A technology of spatial resolution and imaging system, applied in the field of optical detection, can solve the problems of unstable measurement pattern and low precision, and achieve the effect of ensuring precision requirements and high measurement precision

Inactive Publication Date: 2014-05-28
XIAN TECH UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

[0004] Aiming at the problems of low measurement accuracy and unstable measurement patterns in the prior art, the present invention provides a spatial resolution detection device for a color television imaging system

Method used

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  • Color television imaging system spatial resolution detecting device
  • Color television imaging system spatial resolution detecting device
  • Color television imaging system spatial resolution detecting device

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Embodiment Construction

[0016] Such as figure 1 Shown is a CCD camera imaging quality testing device in the prior art. At present, there is still a lot of room for improvement in the research level of color TV imaging systems at home and abroad. Taking the CCD camera imaging quality testing device as an example, the evaluation of CCD camera imaging quality is similar to the testing of TV imaging systems. This measurement system takes the minimum resolvable contrast as the evaluation index of CCD camera imaging quality. The device is composed as follows: The measurement system uses a single light source to generate target brightness and background brightness by spectroscopic system, and project them into two integrating spheres. The target is in the middle of two integrating spheres, and the two integrating spheres uniformly illuminate the front and back of the target; project it to infinity through the transmission collimator, form a test pattern, and provide it to the CCD camera. Adjust the light i...

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Abstract

The invention in particular relates to a color television imaging system spatial resolution detecting device. At present, color television spatial resolution is not high in measurement precision and not stable in measurement pattern. The color television imaging system spatial resolution detecting device disclosed by the invention comprises a color object generating module, a collimating parallel optical unit, a detected product and an adjusting platform, wherein the color object generating module comprises a light source, a luminance / chrominance control unit and a target; the collimating parallel optical unit is composed of an off-axis parabolic reflecting collimator relative to the center of a detected article, a semi-reflection mirror and a reflector. Through a test pattern generated by a double-integrating-sphere system adopted in the standard color object generating module and through feedback regulation, the detecting device disclosed by the invention can monitor luminance and chrominance of the test pattern in real time and change color information as required; through the off-axis parabolic reflecting collimator, the device can avoid chromatic aberration; meanwhile, the detecting device avoids a barrier in the central region of the collimator, thus guaranteeing a precision requirement.

Description

technical field [0001] The invention belongs to the technical field of optical detection, and in particular relates to a spatial resolution detection device for a color television imaging system. Background technique [0002] In the current photoelectric system, in order to obtain more spatial frequency and spectral distribution information, the color TV imaging system is replacing the traditional black and white TV imaging system, and it is used in all aspects of life, responsible for detection, identification and stabilization tasks. However, the color distortion and non-uniformity of the image will inevitably appear in the color TV imaging system, which will reduce the resolution of the color space and affect the accuracy of the image color space information, resulting in the reduction of target detection, recognition and stabilization accuracy. . Therefore, in order to meet people's pursuit of product quality, it is necessary to test the spatial resolution of the color ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N17/00H04N17/02
Inventor 于洵田冰心聂亮韩峰刘宝元陈靖
Owner XIAN TECH UNIV
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