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Stereoscopic structure network three-dimensional image reconstruction-oriented layer data obtaining method

A technology of three-dimensional image and three-dimensional structure, applied in the field of image processing

Active Publication Date: 2018-01-19
WUHAN INSTITUTE OF TECHNOLOGY
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Problems solved by technology

However, for the measurement and calculation of the geometric attribute parameters on the curved surface of the dot side wall, the above-mentioned type of system is helpless, but it is necessary to measure and calculate the corresponding parameters on the basis of the reconstruction of the three-dimensional structure dot 3D image

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Embodiment Construction

[0013] In order to make the technical solution of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings, taking the layer data acquisition of the three-dimensional image reconstruction of the dots of the flexo printing plate as an example. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0014] Take the image sequence S of the dot monocular layer image obtained by shooting as the input data set, S={I 1 , I 2 ,...,I n}, n is the number of images in the sequence, that is, the number of layers when the dot image is taken. Determine whether the image in the input S is a color image or a grayscale image, and if it is a color image, perform grayscale processing on it: Let the position (i, j) on the k-th layer image of the input image sequence S be the red, j, and red pixels of the current...

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Abstract

The invention discloses a stereoscopic structure network three-dimensional image reconstruction-oriented layer data obtaining method. The method comprises the following steps of performing preprocessing of image enhancement and the like on a collected monocular layer image sequence S; calculating a pixel correlation coefficient and a fuzzy coefficient on each layer image to obtain a correlation coefficient image sequence SR and a fuzzy coefficient image sequence SF; designing a low-pass filter for performing filtration processing on SR and SF to obtain a judgment image sequence BD; and calculating out a clear element image sequence SE by utilizing S and BD. Falsely detected pixels due to inter-layer shielding and depth-of-field region crossing are judged and SE is marked. The marked clearelement image sequence SE, namely, obtained stereoscopic structure network three-dimensional image reconstruction-oriented layer data is output. The problem of high-quality layer data acquisition during multi-plane reconstruction of a network with a stereoscopic structure is solved; and the precision of subsequently reconstructed three-dimensional images and network structure parameter measurementbased on the reconstructed three-dimensional images is improved.

Description

technical field [0001] The invention belongs to the field of image processing, and in particular relates to a layer data acquisition method for three-dimensional image reconstruction of dots with a three-dimensional structure on a printing plate such as a printing plate represented by a flexographic plate and a rubber plate. Background technique [0002] The three-dimensional structure of the dots on the gravure (also known as dots) and the dots on the top of the letterpress represented by flexographic plates and rubber plates is the main technical parameter that determines the printing suitability of the corresponding printing plate. In the plate making process of gravure and letterpress, it is necessary to effectively measure the dot quality parameters on the printing plate. At present, the measurement and calculation of the above dot quality parameters when using a monocular imaging system is mainly to use computer vision technology to realize the measurement of the top a...

Claims

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Application Information

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IPC IPC(8): G06T17/00
Inventor 李琼孔令罔
Owner WUHAN INSTITUTE OF TECHNOLOGY
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