Double-image planar motion blur eliminating method based on transparency

A technology of planar motion and blur method, which is applied in the field of double image de-plane motion blur and image de-plane motion blur, and can solve the problem that the algorithm is not particularly effective

Inactive Publication Date: 2012-06-20
ZHEJIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But for ordinary blurred images (video), existing algorithms are not particularly effective

Method used

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  • Double-image planar motion blur eliminating method based on transparency
  • Double-image planar motion blur eliminating method based on transparency
  • Double-image planar motion blur eliminating method based on transparency

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Embodiment Construction

[0018] With reference to accompanying drawing, the double image based on transparency of the present invention removes the planar motion blurring method, carries out in the following steps:

[0019] 1. Seek transparency

[0020] Use the matting method to get the transparency of the foreground image, background image, and input image.

[0021] 2. Model image degradation

[0022] Establish the relationship between the blurred transparency image and the corresponding clear transparency image: the blurred transparency image is equal to the sum of the clear transparency image in each time segment multiplied by the time weight. Denote the original fuzzy transparency image as B, f is the clear transparency image to be obtained, N is the total number of time segments, Δθ i , Δx i , Δy i Respectively, the rotation angle in the time slice i and the global displacement in the x / y direction, w i is the proportion of time slice i (generally 20) in the total exposure time, Tr(x; f, Δθ,...

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Abstract

The invention discloses a method for eliminating planar motion blur by using two ordinary images. The method comprises the following specific steps of: 1, computing a foreground image, a background image and transparency; 2, modeling motion within exposure time; 3, establishing a target function; 4, registering two input images to obtain initial motion estimation; 5, evaluating a fuzzy kernel to minimize a target function in the step 3; 6, estimating a binary transparency image by using a Markovian random field; 7, re-estimating the fuzzy kernel to obtain a fuzzy kernel energy function; 8, modifying a Richardson-Lucy algorithm, and combining the modified Richardson-Lucy algorithm with the motion modeling in the step 2 to obtain a clear motion object foreground image; and 9, combining a deblurred foreground with a deblurred background by using deblurred transparency to obtain a deblurred image. In the obtained deblurred image, a boundary is kept clear, and a ''ringing'' effect is suppressed simultaneously.

Description

Technical field: [0001] The present invention relates to the technical field of image processing, in particular to a method suitable for removing planar motion blur, in particular to a method for removing planar motion blur based on a transparency-based dual image. The present invention is suitable for removing plane motion blur of images related to two frames. Background technique: [0002] Due to the relative motion between the camera (camera or video camera) and the object during the process of acquiring image information, the obtained image is blurred to some extent. In order to obtain clear images, people have proposed image deblurring algorithms. In recent years, image restoration technology has become a research hotspot in the field of image processing at home and abroad, and has been applied to many aspects such as astronomical observation, remote sensing, military affairs, medical imaging, biological research, case detection, transportation, industrial vision, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/50
Inventor 张小红童若峰
Owner ZHEJIANG UNIV
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