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

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...

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