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Method and device for removing noise of image sensor and storage medium

An image sensor and denoising technology, which is applied in the field of sensors, can solve problems affecting imaging quality, etc., and achieve the effect of improving imaging quality and reducing costs

Pending Publication Date: 2021-01-29
BYD SEMICON CO LTD
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  • Summary
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Problems solved by technology

[0003] The present disclosure provides a method, device, and storage medium for removing noise from an image sensor to solve the technical problem in the related art that image sensors affect imaging quality due to column fixed pattern noise

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  • Method and device for removing noise of image sensor and storage medium
  • Method and device for removing noise of image sensor and storage medium
  • Method and device for removing noise of image sensor and storage medium

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Embodiment Construction

[0054] Specific embodiments of the present disclosure will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present disclosure, and are not intended to limit the present disclosure.

[0055] In the prior art, in order to remove column fixed pattern noise, an image sensor such as figure 2 It is proposed that the image sensor includes a reference row pixel array 10 , an effective pixel array 11 , a column analog-to-digital converter 12 , a column RAM (column ADC) 13 , a control circuit 14 and a row decoding circuit 15 . figure 2 The image sensor in the image sensor removes the column fixed pattern noise by calculating and processing the column signals output by the effective pixel array 11 and the reference row 10. Usually, the reference row is larger than 10 rows, and the more reference rows, the image sensor removes the column fixed patt...

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Abstract

The invention relates to a method and a device for removing noise of an image sensor, and a storage medium, which are used for solving the technical problem that the imaging quality of the image sensor is influenced due to the existence of column fixed mode noise in related technologies. The method for removing the noise of the image sensor comprises the following steps: acquiring a pseudo outputsignal and an effective signal of the image sensor; performing de-noising processing on the effective signal according to the pseudo output signal; and outputting the processed effective signal.

Description

technical field [0001] The present disclosure relates to the field of sensors, and in particular, to a method and device for removing noise from an image sensor, and a storage medium. Background technique [0002] CMOS (Complementary Metal Oxide Semiconductor; Complementary Metal Oxide Semiconductor) image sensor due to column mismatch, there will be inherent differences in output between different columns, that is, vertical column fixed pattern noise, due to the existence of column fixed pattern noise, when the image sensor When shooting an image, the image will have obvious column vertical lines, which do not change with the scene. The column fixed pattern noise greatly affects the imaging quality of the image sensor. Therefore, removing the column fixed pattern noise is a challenge in the image sensor industry. Contents of the invention [0003] The present disclosure provides a method and device for removing noise from an image sensor, and a storage medium, so as to so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/374H04N5/357
CPCH04N25/60H04N25/76
Inventor 刘坤
Owner BYD SEMICON CO LTD
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