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Image compensation method and digital camera device thereof

A technology of image compensation and digital photography, applied in color signal processing circuits, etc., can solve problems affecting the clarity of digital images

Inactive Publication Date: 2010-06-23
ALTEK CORP
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  • Abstract
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AI Technical Summary

Problems solved by technology

Although this method of summing pixels can avoid the noise caused by increasing the sensitivity, the addition of surrounding pixels will always affect the clarity of the digital image

Method used

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  • Image compensation method and digital camera device thereof
  • Image compensation method and digital camera device thereof
  • Image compensation method and digital camera device thereof

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Embodiment Construction

[0019] Please refer to figure 1 Shown, it is the structural representation of the present invention. The digital camera 100 implementing the present invention includes: an image capture unit 110 , a storage unit 120 , a lookup table 121 , an image compensation program 122 and a processing unit 130 . The image capturing unit 110 is used for capturing the Baer tiles. The type of the Bell block described in the present invention is not limited, because the conventional Bell block is used for illustration for convenience of description, and it is not limited thereto. In photosensitive components, an array of millions of photosensitive cells (or pixels) covers the surface of the sensor. After receiving light, the accumulated charge on the pixel array of the entire photosensitive component is read out at one end of the photosensitive component. The accumulated charge is quantified by an analog front-end chip or photosensitive processor.

[0020] In order to accurately represent ...

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Abstract

The invention discloses an image compensation method and a digital camera device thereof, and is used to reduce the noise produced when the digital camera device shoots digital images in a high-sensitive mode. The image compensation method comprises the following steps: a Bell block is obtained; the Bell block respectively produces a green pixel signal, a low-resolution sum original luminance signal and an original chroma signal; a high-resolution analog luminance signal is produced with the green pixel signal; the high-resolution analog luminance signal and the low-resolution sum original luminance signal are combined, and the compensated high-resolution luminance signal is output; and the compensated luminance signal and the chroma signal of the original low noise are combined to generate a digital image.

Description

technical field [0001] The invention discloses an image compensation method and its digital camera device, in particular an image compensation method for reducing noise and its digital camera device. Background technique [0002] With the popularization of digital camera devices, more users can get involved in photography. For beginners, it is common to encounter blurred images due to jitter when taking images. In order to solve the blurred image produced by the jitter, some people have proposed the following ways to improve it. The first method is to use the lens or camera body's shake detection mechanism to correct for the shake that occurs while shooting. The second method is to increase the light sensitivity (ISO) when shooting. Because increasing the sensitivity can shorten the shooting time of the shutter, and at the same time, it can achieve the same amount of light received as when the sensitivity is low and the shutter time is long. [0003] The disadvantage of ...

Claims

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Application Information

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IPC IPC(8): H04N9/64
Inventor 李运锦杨庆隆
Owner ALTEK CORP
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