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An Anti-blurring Image Enlargement Method

An anti-blurring, image-based technology, applied in the field of image processing, can solve problems such as image blurring effect and affect the viewer's subjective experience, and achieve the effect of simple realization, elimination of blurring effect, and strong universality

Active Publication Date: 2018-06-29
ZHUHAI DAHENGQIN TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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

Method used

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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 used to illustrate and explain 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. The...

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Abstract

The invention discloses an anti-blur image amplification method. According to the gradient of the input image, an evaluation index of the image blur degree is obtained, and then combined with the magnification factor and image resolution, the image sharpening intensity parameter is obtained. Under the control of this parameter, Perform sharpening appropriate to the input image quality level; then decompose the overall amplification process of the image into several small-magnification step-by-step amplifications, and use ordinary interpolation methods to enlarge the image width and height by 1.2 times each time until the overall magnification requirements are met. . The present invention effectively eliminates the blur effect inherent in the interpolation method and significantly improves the clarity of the enlarged image without significantly increasing the computational complexity.

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. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T3/40G06T5/00
CPCG06T3/4084G06T2207/10016G06T2207/20172G06T5/73
Inventor 王中元邵振峰韩镇肖晶
Owner ZHUHAI DAHENGQIN TECH DEV CO LTD
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