Dead pixel processing method and system for image sensor

An image sensor and processing method technology, applied in the field of image sensors, can solve the problems of poor image sensor imaging effect and bad pixel processing effect, and achieve the effect of improving the bad pixel processing effect

Active Publication Date: 2016-02-03
BEIJING LUSTER LIGHTTECH
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Problems solved by technology

[0008] Embodiments of the present invention provide a method and system for processing dead pixels of an image sensor, so as to solve the technical problem in the prior art that the processing effect of dead pixels is poor, which leads to poor imaging effect of the image sensor

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  • Dead pixel processing method and system for image sensor
  • Dead pixel processing method and system for image sensor

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Embodiment Construction

[0035] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described The embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0036] The method and system for processing dead pixels of an image sensor provided by an embodiment of the present invention, in addition to detecting the position information of the dead pixels, also detects the bad cluster type information corresponding to the bad pixels, that is, other bad pixels in the pixels around the bad pixels (...

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Abstract

Embodiments of the invention disclose a dead pixel processing method and system for an image sensor. The method comprises the following steps: presetting a mapping table of bad cluster types and interpolation algorithms; detecting and storing position information of a dead pixel and bad cluster type information corresponding to the dead pixel; and looking up the dead pixel in a collected image according to the position information of the dead pixel, selecting a matched interpolation algorithm in the mapping table according to the bad cluster type information corresponding to the dead pixel, and using the interpolation algorithm to carry out interpolation processing on the dead pixel. According to the dead pixel processing method and system for image sensor provided by the embodiments of the invention, bad clusters are classified according to a distribution type of peripheral dead pixels, different interpolation algorithms are adopted for different bad cluster types corresponding to the dead pixels, thus each dead pixel can obtain an optimal interpolation result, and then the dead pixel processing effect of the image sensor is improved.

Description

technical field [0001] The invention relates to the technical field of image sensors, in particular to a method and system for processing dead pixels of an image sensor. Background technique [0002] An image sensor is a device that converts an optical image into an electronic signal, and is widely used in fields such as photography, image acquisition, and industrial measurement. Generally, an image sensor includes a large number of photosensitive units, and each photosensitive unit corresponds to a pixel in an image output by the image sensor. [0003] Due to reasons such as the manufacturing process, transportation or storage methods, some photosensitive units of the image sensor are damaged and cannot normally receive light. The pixels corresponding to these photosensitive units that cannot normally receive light in the image are called dead pixels. Among them, the dead pixels mainly include the following three types: 1. Dark dots, which are mainly caused by the complete...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/357H04N5/367
Inventor 郭慧杨艺谢森
Owner BEIJING LUSTER LIGHTTECH
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