Sunspot real-time processing method and image processor

An image processor and sunspot technology, applied in the field of image processing, can solve the problems of increasing frame storage space, sunspot correction delay, etc., to reduce correction delay, avoid frame storage space, reduce cost and power consumption Effect

Active Publication Date: 2018-11-30
SMARTSENS TECH SHENZHEN CO LTD
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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for real-time processing of sunspots, which aims to solve the problem of increasing the frame storage space required by the image processor for the analysis of the entire frame image in the traditional technical solution, and delaying the correction of sunspots The problem

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  • Sunspot real-time processing method and image processor

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[0019] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0020] figure 1 The specific flowchart of the method for real-time processing of sunspots provided by the preferred embodiment of the present invention is shown, as figure 1 As shown, the method includes the following steps:

[0021] S110. Convert the collected reset voltage and photoelectric conversion signal of the image sensor into a first voltage representing the reset voltage and a second voltage representing the photoelectric conversion signal, respectively.

[0022] Preferably, the first voltage is proportional to the reset voltage, and the second voltage is proportional to the photoelectr...

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Abstract

The invention belongs to the technical field of image processing and provides a sunspot real-time processing method. The method comprises the following steps of converting a collected reset voltage and photoelectric conversion signal of an image sensor into a first voltage for representing the reset voltage and a second voltage for representing the photoelectric conversion signal; comparing the first voltage with a first reference voltage, comparing the second voltage with a second reference voltage, and outputting a first comparison result and a second comparison result; carrying out logicaloperation on the first comparison result and the second comparison result, and outputting a marking signal; determining coordinate information of the marking signal, and removing a sunspot of pixel corresponding to the coordinate information. Features of the reset voltage and the voltage of the photoelectric conversion signal are analyzed in real time, the sunspot is corrected in real time, the correction delay is reduced, the frame storage space required by analyzing a whole frame image is effectively avoided, and cost and power consumption are reduced.

Description

technical field [0001] The invention belongs to the technical field of image processing, in particular to a method for real-time processing of sunspots and an image processor. Background technique [0002] When the image sensor takes pictures of high-brightness targets such as the sun, due to its very strong light energy, in a general-purpose 4T pixel image sensor, the sampling capacitor for sampling the image signal will fail to reset after being irradiated by strong light, thus Image sensing for high brightness such as the sun fails, leaving a black spot. [0003] The existing sunspot processing circuit usually analyzes the entire image after acquiring the entire frame image, judges the area of ​​the sun through the preset sunspot feature, and uses the preset brightness or the pixel value of the brightness around the sun Fill the area of ​​the sunspot to correct the sunspot. However, the image of each frame needs to be analyzed, which increases the frame storage space re...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/217
CPCH04N25/60
Inventor 张小军胡文阁彭茂
Owner SMARTSENS TECH SHENZHEN CO LTD
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