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HEIGHT DATA PROCESSING DEVICE, HEIGHT DATA PROCESSING METHOD, PROGRAM, RECORDING MEDIUM, EMBOSSED PLATE MANUFACTURING METHOD, AND SHEET MANUFACTURING METHOD
HEIGHT DATA PROCESSING DEVICE, HEIGHT DATA PROCESSING METHOD, PROGRAM, RECORDING MEDIUM, EMBOSSED PLATE MANUFACTURING METHOD, AND SHEET MANUFACTURING METHOD
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机译:高度数据处理设备,高度数据处理方法,程序,记录介质,压板制造方法和薄板制造方法
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摘要
PROBLEM TO BE SOLVED: To provide a height data processing method, etc. capable, by targeting height data obtained by decoding an original, of easily removing deflection shapes, etc. of the original.SOLUTION: A height data processing device 1 is furnished with: high-low difference calculation means 21 for preparing, from height data 24 obtained by three-dimensionally scanning an original 3 having an uneven surface shape, corrected height data by subtracting, from gradation values of the respective pixels, the average gradation value of pixels confined to the range of a blurring radius r from the respective pixels and then calculating the high-low difference H as the difference of maximal and minimal values of gradation values of the corrected height data; an optimal distance calculation means 22 for calculating, in compliance with a relational formula H=f(r) expressing the relationship of the blurring radius r and high-low difference H obtained by calculating high-low differences H specific respectively to a plurality of blurring radii r, a blurring radius r yielding virtually fixed high-low differences H in response to anterior-posterior variations of the blurring radius r; and height data correction means 23 for preparing corrected height data of a case where the calculated blurring radius r is assumed to be the blurring radius r.
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