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An Adaptive Video Reconstruction Method for a Single Coded Image

A coding image and self-adaptive technology, which is applied in image communication, image enhancement, image data processing, etc., can solve problems such as restricting the application of algorithms, and achieve the effects of increasing the accuracy of reconstructed images, saving time, and reducing time complexity

Inactive Publication Date: 2017-09-29
ZHEJIANG UNIV
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Problems solved by technology

From the results alone, the OMP algorithm based on KSVD dictionary training undoubtedly has higher reconstruction accuracy, but the reconstruction time required by the MP algorithm is often several times or even dozens of times that of the BP algorithm, and the time complexity is too high Seriously restrict the application of the algorithm

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  • An Adaptive Video Reconstruction Method for a Single Coded Image
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Embodiment Construction

[0034] The present invention will be further described below in conjunction with accompanying drawing.

[0035] In the process of single-exposure video reconstruction, the present invention uses the shot characteristics of moving objects in the image to adaptively search and reconstruct the moving region for the observed image obtained by the pixel equal-time-long exposure coding method, thus saving reconstruction time. Time required for non-moving areas. Flow process of the present invention is attached figure 1 As shown, it mainly includes several steps such as pixel coding exposure, adaptive motion region search and motion region video reconstruction.

[0036] Step 1. Pixel Encoding Exposure

[0037] 1-1 Divide the total exposure time T into N time segments on average, and the duration of each time segment is T / N.

[0038] 1-2 Control each pixel of the camera detector, and encode the exposure of each pixel in the time domain. Pixel encoding follows the principles of the...

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Abstract

The invention discloses an adaptive video reconstruction method of a single coded image. In the process of single-exposure video reconstruction, the concept of self-adaptive search for motion regions is introduced for the observed images obtained by the method of pixel equal duration exposure coding. Utilize the shot-grain characteristics of moving objects in the image to adaptively search and reconstruct the moving area, thus saving the time required to reconstruct the non-moving area, reducing the time complexity of video reconstruction, and avoiding the introduction of static background when reconstructing The reconstruction error increases the accuracy of the reconstructed image.

Description

technical field [0001] The invention relates to an adaptive video reconstruction method of a single coded image. Background technique [0002] As a new application of Compressive Sensing (Compressive Sensing) theory, video compressed sensing technology can be used to improve the temporal resolution of the camera, that is, to obtain high-speed video from a low-speed camera. This type of method first performs exposure coding on each pixel in the time dimension, obtains the coded observation image by modulating the exposure time of the pixel, and then uses various reconstruction algorithms to reconstruct the observation image to obtain a series of video images, thereby increasing the temporal resolution of the camera. In terms of reconstruction algorithms, it is mainly divided into the basis pursuit (Basis Pursuit, BP) algorithm and the matching pursuit (Matching Pursuit, MP) algorithm. The former mainly includes TwIST, GAP and other algorithms, which use sparse measurement f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/235G06T5/00
Inventor 陈跃庭唐超影徐之海李奇冯华君
Owner ZHEJIANG UNIV
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