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Image processing method

An image processing and image technology, which is applied in the field of image processing, can solve the problems that the noise cannot be filtered out, and the difference can be weakened, so as to achieve the effect of eliminating image discontinuity and avoiding block effect

Active Publication Date: 2014-08-13
ALTEK SEMICON
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  • Description
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Problems solved by technology

However, if the noise filtering parameters are adjusted to weaken the differences in each area, it will cause the problem that the noise cannot be filtered out cleanly.

Method used

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no. 1 example

[0043] In this embodiment, in order to avoid the unnatural feeling of the image after noise filtering, the source image is separated into two different image processing processes to generate two result images, one of which contains more noise and image details information, the other image is more blurred, and finally the two resulting images are weighted and summed to produce a processed image with noise filtering effect and more image detail information.

[0044] figure 1 is a block diagram of an image processing device according to the first embodiment of the present invention. The image processing device 100 is, for example, a digital camera, a SLR camera, a digital video camera, or other electronic devices with image processing functions such as smart phones, tablet computers, notebook computers, and desktop computers, and is not limited to the above.

[0045] Please refer to figure 1 , the image processing device 100 includes an image acquisition module 110 , a first no...

no. 2 example

[0056] In this embodiment, in order to avoid the unnatural feeling of the image after noise filtering, it is also possible to randomly generate many noise points in the image and mix these noise points with different characteristics into the image after noise filtering , in order to achieve the technology of natural reproduction.

[0057] image 3 is a block diagram of an image processing device according to a second embodiment of the present invention. The image processing device 300 is, for example, a digital camera, a SLR camera, a digital video camera, or other electronic devices with image processing functions such as smart phones, tablet computers, notebook computers, and desktop computers, and is not limited to the above.

[0058] Please refer to image 3 , the image processing device 300 includes an image separation module 310 , a noise generation module 320 and a combination module 330 . The image separation module 310 is used for separating the received input imag...

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Abstract

The invention provides an image processing method which includes the following steps: obtaining a source image of a Bayer pattern color array; executing a first-order image processing on the source image to generate a first luminance and chrominance format image; executing a second-order image processing on the source image so as to generate a second luminance and chrominance format image; then generating a noise inhibition image after executing noise filtering processing on the first brightness and chrominance format image; and firstly carrying out weighting processing on a luminance image in the noise inhibition image and a luminance image in the second luminance and chrominance format image and then combining a chrominance image in the second luminance and chrominance format image so as to generate a processed image. The noise reduction degree of the noise inhibition image is higher than the noise reduction degree of the second luminance and chrominance format image.

Description

technical field [0001] The present invention relates to an image processing technology, and in particular to an image processing method for reproducing natural appearance reproduction of images. Background technique [0002] In the application of digital cameras, noise filtering of photosensitive elements or electronic signals is a very important part, especially for high-sensitivity (High ISO) digital images. In the process of digital image noise filtering, the detailed texture and gradient light and shadow changes of the object itself are often filtered out together, so that the detailed texture in the digital image presents a blocky distribution and loses its natural appearance. [0003] In order to maintain the natural feeling of digital images, the post-processing for image noise filtering generally uses image sharpness enhancement algorithms to enhance the edges of objects in the image to achieve a sharpening effect. For the side effect of losing the natural appearanc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N9/04H04N9/69
Inventor 彭诗渊赵善隆周宏隆
Owner ALTEK SEMICON
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