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A method and device to reduce image acquisition device noise

An image acquisition device and noise technology, which is applied in the directions of image communication, color TV parts, TV system parts, etc., can solve the problems of complex process and high cost, and achieve the effect of satisfying visual requirements and smooth and soft picture.

Active Publication Date: 2008-09-17
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The problem to be solved by the present invention is to provide a method and device for reducing the noise of the image acquisition device, so as to solve the defects of high cost and complicated process required for improving the imaging quality of the image acquisition device in the prior art

Method used

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  • A method and device to reduce image acquisition device noise
  • A method and device to reduce image acquisition device noise
  • A method and device to reduce image acquisition device noise

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Embodiment Construction

[0024] Embodiment 1 of the present invention provides a method for reducing the noise of an image acquisition device, taking the camera of a mobile phone as an example, such as image 3 shown, including the following steps:

[0025] Step s101, identifying each register storing the image value of the transition part between the subject and the background as a designated register group. Since the characteristic of the noise acting on the pixel register is the continuous random change of the value, it can cause the corresponding pixel of the LCD (Liquid Crystal Display, liquid crystal display) video image to continuously change brightly or darkly. Therefore, the present invention divides all the registers in the image acquisition device into two types according to the change of the values ​​in the registers within a specific time before shooting: one is the registers that are less affected by noise, and the other is the registers that are greatly affected by noise , wherein the ...

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Abstract

The disclosed method for reducing noise of image collector comprises: labeling register mark stored transient image fluctuation value as the appointed register group; checking whether the value in register group over threshold, yes to process the value in nearby non-appointed register and store result in the one with value over threshold. This invention can improve photo quality.

Description

technical field [0001] The invention relates to the field of image acquisition, in particular to a method and device for reducing the noise of an image acquisition device. Background technique [0002] Image acquisition devices on mobile terminals, such as mobile phone cameras, are popular among consumers because of their portability. Mobile phone cameras usually use CCD (Charge Coupled Device, Charge Coupled Device) or CMOS (Complementary Metal-Oxide Semiconductor, Complementary Metal-Oxide Semiconductor) image sensing technology to collect images. Under different brightness conditions, the camera can automatically identify and change Shooting mode to change the lighting time to achieve the purpose of adjusting the light intensity of the photo. When the external light is weak, the working current of the imaging chip is small, and the resulting image is dark. At this time, the exposure time should be appropriately increased for backlight compensation; when the light is suff...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/217
Inventor 石彬
Owner HUAWEI TECH CO LTD
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