Method and device for correcting defective pixel of image

Abstract

The invention discloses a method and a device for correcting a defective pixel of an image, which are used for solving a problem of lower correction precision of the defective pixel in the prior art.The method specifically comprises the following steps that electronic equipment establishes an N*N pixel matrix by taking the fth pixel point in an image to be detected as a central pixel point, wherein f is a positive integer which is not larger than the total number of the pixel points in the image to be detected; the electronic equipment respectively converts the colors of the pixel points of an inner ring and an outer ring into the color of the central pixel point, and respectively determines pixel values after each pixel point is converted; and the electronic device determines the centralpixel point as the defective pixel based on the pixel value after each pixel point is converted, and corrects the central pixel point.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a method and device for correcting dead pixels in an image. Background technique [0002] Due to the limitations of the image sensor manufacturing process, the image sensor will collect more and more dead pixels in the image collected under a long-term and high-temperature environment, resulting in a decrease in the quality of the collected image. Dead pixels refer to pixels that do not change with light sensitivity and always present one color (such as white, black or color), thus destroying the clarity and integrity of high-definition images. [0003] Currently there are two types of dead point correction technology: static dead point correction and dynamic dead point correction. Static dead point correction is to predetermine the bad point position, record the bad point position in the memory, and perform dead point correction when the pixel at this position is proce...

AI Technical Summary

Problems solved by technology

[0004] Embodiments of the present invention provide a method and device for correcting dead pixels in an image to solve the problem of low accuracy in correcting dead pixels in the prior art

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