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APPARATUS AND METHOD FOR ESTIMATING MOTION BLUR INFORMATION FROM IMAGE DEGENERATED BY MOTION BLUR OF DIGITAL CAMERA
APPARATUS AND METHOD FOR ESTIMATING MOTION BLUR INFORMATION FROM IMAGE DEGENERATED BY MOTION BLUR OF DIGITAL CAMERA
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机译:从数字照相机的运动模糊退化的图像中估计运动模糊信息的装置和方法
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摘要
PURPOSE: A method for estimating motion blur information from degenerated image is to get the motion blur information such as a direction and a length of the motion blur using a pole feature of a since function shown in Fourier transform of PSF(point spread function). CONSTITUTION: A method for estimating motion blur information comprises steps of: fourier-transforming a degenerated image in which noise is added; detecting each pole at each reference line of a fourier-transformed image and performing a horizontal and vertical extreme pole trajectory transformation; setting an SDR(signal dominant region) and an NDR(noise dominant region) from the transformed horizontal and vertical extreme pole trajectory; and applying a weighted value which is in inverse proportion to a curvature of a circumference of the extreme pole in the set SDR and estimating a direction of the motion blur using least square method. The fourier-transforming process comprises steps of modeling the degenerated image according to the direction and the length of the motion blur and fourier-transforming the modeled image.
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