8/30/2023 0 Comments Dot matrix font microsoft wordSubsequently, a Multidirectional Line Scanning (MLS) method is proposed to determine the boundaries between adjacent dot-matrix characters with tilt, adhesion or dot-missing abnormalities. First, a coarse-to-fine strategy is applied to locate HSM characters from captured images, where a weighted gravity-center estimation method is extended to search the enclosure of label regions, and an edge projection scheme is adopted to refine the label extraction. With a brief description of the imaging system, our emphasis is put on image analysis. In this paper, a machine vision system is presented for the HSM dot-matrix label recognition. However, it is not an easy task due to complex factors like low printing quality, motion distortion and thermal blurring, especially while handling the prone-to-deform dot-matrix labels generated by a hot spray marking (HSM) technique. The automatic recognition of labels marked on steel slab surfaces is of significance to information management and intelligent manufacturing in steel plants.
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