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An unstable blind element detection method and system

A detection method and detection system technology, applied in the direction of measuring devices, optical instrument testing, machine/structural component testing, etc., can solve problems such as inability to detect particularly effective and reliable unstable blind elements, unstable blind element detection methods and systems, etc. , to achieve a stable and reliable detection effect

Active Publication Date: 2020-09-04
SUN CREATIVE ZHEJIANG TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem solved by the present invention is to construct a method and system for detecting unstable blind elements, so as to overcome the technical problem that the prior art cannot detect unstable blind elements effectively and reliably

Method used

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  • An unstable blind element detection method and system
  • An unstable blind element detection method and system
  • An unstable blind element detection method and system

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Embodiment Construction

[0015] The technical solutions of the present invention will be further described below in conjunction with specific embodiments.

[0016] Such as figure 1 As shown, the specific embodiment of the present invention is to provide a method for detecting unstable blind cells, that is, blind cells that do not form complete bright and dark points, but flickering points. The unstable blind element detection method includes the following steps:

[0017] Collect N frames of black body images: use the infrared thermal imager to collect N frames of images of black bodies with a temperature of T, and calculate the time average of the N frames of images as a reference standard value.

[0018] The specific implementation process is as follows: use an infrared thermal imager to continuously collect N frames of images formed by a black body with a temperature of T, as shown in the attached figure 1 As shown, calculate the time average of the N frames of images, as a reference standard va...

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Abstract

The invention relates to an unstable blind pixel detection method and system. Through two times of image acquisition, more than half of the time in M frames does not satisfy normal pixel gray level fluctuation, a fluctuation range of a point exceeds a range of normal pixel fluctuation, and so the point is determined to be a blind pixel. The unstable blind pixel detection method and system are stable and reliable in unstable blind pixel detection.

Description

technical field [0001] The invention relates to a blind element detection method and system, in particular to an unstable blind element detection method and system. Background technique [0002] Due to the production process, the infrared focal plane array, the main component of the infrared thermal imager, cannot guarantee that every detection element on the infrared focal plane array can work normally when it is powered on, and a small number of detection elements are not working or are not working. In the normal working state, bright spots, dark spots and flickering spots appear on the image formed by the infrared thermal imaging camera. In the prior art, there are some detection methods for the bright and dark spots formed by inherently stable blind cells, but there is no particularly effective and reliable detection method for unstable blind cells, that is, blind cells that form flickering dots. Contents of the invention [0003] The technical problem solved by the p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M11/00G06T7/00
Inventor 叶剑利
Owner SUN CREATIVE ZHEJIANG TECH CO LTD