Grayscale Image Acquisition for Raised Characters Based on Grating Image

Xue Yong Li; Yun Dong Liu; Guo Liang Lu

doi:10.4028/www.scientific.net/AMM.678.180

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 678Grayscale Image Acquisition for Raised Characters...

Grayscale Image Acquisition for Raised Characters Based on Grating Image

Abstract:

This paper presents a novel image acquisition technology for colorless raised characters. First, a grating image modulated with the height information of raised character is captured through a vision system; then, the Fourier transform method is used to get the phase of the grating image; finally, a rational design phase unwrapping method is designed to reconstruct the grayscale image of raised characters. Experiments show that the proposed method can get the well-separated images of raised characters.