HEIGHT DATA PROCESSING DEVICE, HEIGHT DATA PROCESSING METHOD, PROGRAM, RECORDING MEDIUM, EMBOSSED PLATE MANUFACTURING METHOD, AND SHEET MANUFACTURING METHOD

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.