Device of processing dead pixel

A technology for processing devices and dead pixels, which is applied in the field of processing devices for bad pixels of image sensors, and can solve problems such as distortion

Inactive Publication Date: 2009-01-21
MTEKVISION CO LTD
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  • Abstract
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Problems solved by technology

As a result, the restored image has many distortions compared to the corresponding real image

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  • Device of processing dead pixel

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Embodiment Construction

[0035] The above objects, features and advantages will be more apparent from the following description with reference to the accompanying drawings.

[0036] Since various modifications and embodiments of the invention are possible, some of them are described and illustrated with reference to the accompanying drawings. However, this is by no means to limit the present invention to these specific embodiments, but should be construed to include all changes, equivalents and substitutions covered by the spirit and scope of the present invention. Throughout the drawings, similar elements are given the same reference numerals. Throughout the specification of the present invention, when it is determined that describing a certain technology will obscure the gist of the present invention, the related detailed description of the technology is omitted.

[0037] Terms such as "first" and "second" may be used in describing elements, but the above elements should not be limited by the above...

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Abstract

A dead pixel processing device is disclosed. The dead pixel processing device separates an inputted Bayer pattern image into corresponding component data; calculates the distribution (pattern) of pixels based on the median of each data; calculates a comparing value based on a component having a center pixel; outputs an external flag which informs whether there are a dead pixel and / or a hot pixel by using the comparing value; compares the values of the center pixel and adjacent pixels in the component having the center pixel; calculates a measuring value based on the center pixel; outputs an internal flag by using the measuring value; and corrects the dead pixel or the hot pixel. With the present invention, an image can be corrected by detecting a corresponding dead pixel and hot pixel.

Description

[0001] Cross References to Related Applications [0002] This application claims foreign priority under 35 U.S.C.. sctn 119(a)-(d) of PCT / KR2006 / 005844, filed December 28, 2006, which is hereby incorporated by reference in its entirety. technical field [0003] The invention relates to a dead point processing device, more specifically, to a dead point processing device of an image sensor. Background technique [0004] In an image sensor, a plurality of pixels are arranged in a two-dimensional structure. Each pixel converts input light into an electrical signal according to the brightness of the input light. The amount of light input to each pixel can be identified by measuring the converted electrical signal. With this, an image in units of pixels can be constructed. [0005] An image sensor is composed of a pixel array having hundreds of thousands to several million pixels, a device for converting analog data into digital data, and several hundred to several thousand mem...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N9/64H04N17/00
CPCG06T3/4015H04N9/646
Inventor 李浩瑛
Owner MTEKVISION CO LTD
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