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Image dithering processing method and image dithering processing device

A technology of jitter processing and image, applied in the field of image processing, to achieve the effect of suppressing jitter noise, reducing complexity, and having no jitter noise

Active Publication Date: 2016-01-06
SPREADTRUM COMM (SHANGHAI) CO LTD
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  • Description
  • Claims
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Problems solved by technology

[0011] The problem to be solved by the present invention is how to ensure a certain image quality for the output image after the dithering process, and reduce the complexity of the dithering process to meet the real-time requirements

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  • Image dithering processing method and image dithering processing device
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  • Image dithering processing method and image dithering processing device

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Embodiment Construction

[0039] Since the existing image dithering processing methods cannot simultaneously improve the quality of the output image and reduce the processing complexity, for some terminal devices that are sensitive to hardware configuration costs, such as mobile phones and handheld computers, it is necessary to ensure that the output image reaches a certain level. Quality, and the need to meet the real-time requirements of image processing without increasing the cost, this is an urgent problem to be solved.

[0040] In order to solve the above problems, the technical solution of the present invention proposes a method for image shaking processing, such as figure 1 As shown, the shaking processing method of the image comprises:

[0041] Step S1, traversing the pixel points in the image to be processed along the traversal path formed by the fractal curve;

[0042] Step S2, perform neighborhood processing for each pixel traversed, the neighborhood processing includes: summing the value o...

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Abstract

The invention provides an image dithering processing method and an image dithering processing device. The method comprises the following steps of: traversing pixel points in an image to be processed along a traversal path formed by a fractal curve; performing neighborhood processing on each traversed pixel point; and determining the value of each pixel point in the image to be processed after the dithering processing by the result after the neighborhood processing, wherein the neighborhood processing includes the operation of summing the value of the currently traversed pixel point and the error value corresponding to each pixel point in the pixel point neighborhood, and each pixel point in the neighborhood is a traversed pixel point sequentially adjacent to the currently traversed pixel point on the traversal path. By using the technical scheme, certain image quality of an output image subjected to dithering processing can be ensured, for example, rich colors, continuous gray-scale transition, no dithering noise and no obvious moire and worm phenomena of the output image can be ensured; and the dithering processing complexity can also be lowered for meeting the real-time performance requirement.

Description

technical field [0001] The present invention relates to the technical field of image processing, in particular to an image shaking processing method and device. Background technique [0002] Dither is an intentional noise that randomizes quantization errors and prevents problems such as banding that can result from greatly stretching an image. The concept of dither is commonly used in digital sound and digital video data processing, and is also commonly used in compressed disks. [0003] Dithering in image processing is a technique that uses a limited color palette to create the illusion of color depth in an image. In a dithered image, those colors that are not available in the palette can be replaced by an approximation of the colors available in the current palette, and the human eye can accept this mixture of colors. Dithering is similar to halftone printing used in printing techniques, where dithered images, especially those that use the associated few colors, can ofte...

Claims

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Application Information

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IPC IPC(8): G06F17/30
Inventor 孙德印朱钧何佳伟
Owner SPREADTRUM COMM (SHANGHAI) CO LTD
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