Anti-fuzzy image amplification method

An anti-blur, image technology, applied in the field of image processing, can solve the problems affecting the viewer's subjective experience, image blur effect, etc., to achieve the effect of eliminating blur effect, simple implementation and strong universality

Active Publication Date: 2016-01-20
ZHUHAI DAHENGQIN TECH DEV CO LTD
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Problems solved by technology

However, these classic interpolation and amplification methods also have a serious defect. When the original image is not clear (such as a compressed image) or the magnification is too large, the image after interpolation and amplification has obvious blurring effect, which affects viewing. subjective experience

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Embodiment Construction

[0031] In order to facilitate those of ordinary skill in the art to understand and implement the present invention, the present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the implementation examples described here are only for illustration and explanation of the present invention, and are not intended to limit this invention.

[0032] The invention provides an anti-blurring image enlargement method, which cascades image sharpening operations and interpolation operations into a whole. The intensity of the sharpening operation should be adapted to the quality of the input image itself. Clear images should be weakly sharpened, and blurred images should be strongly sharpened. Otherwise, sharpening will not only fail to provide preprocessed images with enhanced high-frequency components for subsequent interpolation operations , which will damage the image and reduce visual fidelity....

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Abstract

The invention discloses an anti-fuzzy image amplification method which comprises the steps of acquiring an evaluating index for an image fuzzy degree according to the gradient of an input image, calculating an image sharpening intensity parameter according to an amplification factor and an image resolution, and performing sharpening which corresponds with the quality grade of an input image through control of the parameter; and furthermore decomposing an overall amplifying process of the image into a plurality of small-factor step-by-step amplifications, and amplifying the width and the height of the image by 1.2 times according to a common interpolation method until the a total amplification factor requirement is satisfied. The anti-fuzzy image amplification method has advantages of effectively eliminating an inherent fuzzy effect of an interpolation method and remarkably improving definition of an amplified image under a precondition that computing complexity is not remarkably increased.

Description

technical field [0001] The invention belongs to the technical field of image processing, and relates to an image interpolation enlarging method, in particular to an anti-blurring image enlarging method. technical background [0002] Currently, digital cameras or cameras can easily capture high-resolution videos, but for the sake of saving storage or transmission costs, there are still a large amount of low-resolution video content in applications such as video surveillance, video conferencing, and Internet TV. Video upscaling technology is therefore widely used to improve the spatial resolution of images to meet the requirements of the actual display area of ​​the screen. Some special applications, such as video surveillance, also involve zooming in on a local area of ​​the image so that details of the image can be identified. [0003] A large number of video image scaling techniques have been developed, ranging from simple interpolation to complex image super-resolution. ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T3/40G06T5/00
CPCG06T3/4084G06T5/003G06T2207/10016G06T2207/20172
Inventor 王中元邵振峰韩镇肖晶
Owner ZHUHAI DAHENGQIN TECH DEV CO LTD
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