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With the rapid development of the Computer-To-Plate (CTP) technology, the detection and control of the dot area coverage on the plate become one of the key technologies to control quality during printing and copy processes. With regards to the characteristic of low contrast in plate image and fuzzy dot edge, the Fuzzy C-Means (FCM) clustering algorithm is proposed to segment the microscopic image...
The paper proposes a rational tangent halftoning algorithm with a single threshold matrix, which has different threshold matrices with different sizes of row and column for different screen angles respectively, in order to assume that all corners of the corresponding matrix are located on junctions of grid of laser imagesetter and that the shape and size of the halftone dot do not vary from halftone...
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