Apparatus and method for restoring image

A technology for recovering images and equipment. It is used in image communication, parts of color TVs, parts of TV systems, etc., and can solve problems such as errors and inability to estimate PSF.
CN101388952AActive Publication Date: 2009-03-18SAMSUNG ELECTRONICS CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SAMSUNG ELECTRONICS CO LTD
Publication Date
2009-03-18

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Abstract

An apparatus and a method for restoring an image are provided. The apparatus includes an edge-strength-detection module which detects an R-channel edge strength, a G-channel edge strength and a B-channel edge strength from an input image and generates an R-channel edge map, a G-channel edge map and a B-channel edge map based on the R-channel edge strength, the G-channel edge strength and the B-channel edge strength; an edge-strength-compensation module which compensates for the R-channel edge strength and the B-channel edge strength based on the G-channel edge strength; a valid-value-generation module which generates a valid value indicating a blur level based on the compensated R-channel edge strength and the compensated B-channel edge strength; a point spread function (PSF) estimation module which estimates a PSF corresponding to the valid value; and an image-restoration module which restores the input image using the PSF.
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Description

technical field

[0001] One or more embodiments of the present invention relate to an image processing technique, and more specifically, to a device and method for restoring an image, wherein, based on the red (R) channel edge intensity of the input image, the green (G) channel Edge Intensity and Blue (B) Channel Edge Intensity calculates the effective value corresponding to the distance between the object of the input image and the image sensor, and based on the effective value, determines the clearest channel among the R, G, and B channels and the channel corresponding to the R, G, and B channels. Point spread function (PSF) of the channel identified as the sharpest of the G and B channels. Background technique

[0002] Focus degradation caused by imprecise adjustment of the focal length is one of the main reasons for deteriorating the picture quality obtained by the image capturing device. In order to prevent such focus deterioration, image capture devices equipped with a...

Claims

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