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Matlab-based RTS noise detection analysis system for image sensor

An image sensor and noise detection technology, which is applied in the direction of image communication, TV system parts, color TV parts, etc., can solve the problems of difficult analysis, RTS noise detection and extraction, etc., to achieve difficult extraction and good versatility Effect

Active Publication Date: 2015-08-19
XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
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Problems solved by technology

Through the Matlab-based image sensor RTS noise detection and analysis system of the present invention, the current RTS noise detection and extraction difficulties and analysis difficulties are solved, and various processes and radiation defects of image sensors can be studied more deeply.

Method used

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  • Matlab-based RTS noise detection analysis system for image sensor
  • Matlab-based RTS noise detection analysis system for image sensor
  • Matlab-based RTS noise detection analysis system for image sensor

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Embodiment

[0029] A kind of image sensor RTS noise detection and analysis system based on Matlab of the present invention, this system is made up of image format setting module, signal processing parameter setting module, RTS noise detection module and RTS noise reconstruction module, wherein image format setting Setting module, including pixel depth setting, data read-in sequence setting, and image width and height setting; signal processing parameter setting module, including median filter length parameter setting and gradient threshold filtering algorithm selection setting; RTS The noise detection module reads in data to detect RTS noise and outputs the detection result; the RTS noise reconstruction module loads the detection result to reconstruct the RTS noise and outputs the reconstruction result. The specific operation is carried out as follows:

[0030] a. Select Aptina TM The CMOS image sensor model MT9M001 produced by the company was used as the experimental sample. The CMOS APS...

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Abstract

The invention relates to a Matlab-based RTS noise detection analysis system for an image sensor. The system is characterized by using Matlab to read collected images and converting the images as pixel signals of a pixel gray value; performing white noise filtering to each pixel signal to obtain the pixel signals; using a gradient detecting method to obtain gradient change signals of the pixel signals; obtaining a pixel gradient signaling noise threshold via a threshold algorithm, and then denoising the gradient signals; counting number of gradient pulse of each pixel and outputting as an RTS noise detection result; averaging the signals between each two pulses of a pixel gradient signal to obtain an average dark current base of the pixel RTS noise; obtaining a reconstructed RTS noise signal by combining the average dark current base of the RTS noise and a gradient pulse signal. The system of the invention can be applied to any visible image sensors and can automatically realize RTS noise detection and whole parametric analysis. The system of the invention solves the problem that extraction and analysis of current RTS noise detection are hard, and more deeply studies all kinds of technologies of the image sensor and defect generated by radiation.

Description

Technical field: [0001] The invention relates to the technical field of image sensor detection, in particular to an image sensor RTS noise detection and analysis method, and belongs to the technical field of microelectronics and the field of anti-radiation reinforcement technology. Background technique: [0002] Image sensors are widely used in meteorological satellites, communication satellites, and earth resource satellites. The reliability of their space applications is directly related to the on-orbit performance and operational life of satellites. However, there are a large number of high-energy radiation particles in the space environment, and their action on the image sensor will cause serious degradation of its performance, such as the generation of a large number of RTS pixels, and the appearance of RTS pixels will significantly increase the noise of the image sensor. In order to deeply study the RTS noise generated by the radiation damage of the image sensor when i...

Claims

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Application Information

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IPC IPC(8): H04N5/357H04N5/374
Inventor 郭旗王帆李豫东汪波张兴尧何承发文林陆妩施炜雷孙静李小龙余德昭武大猷玛利亚·黑尼
Owner XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
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