| 摘要 |
PROBLEM TO BE SOLVED: To measure a character line efficiently at higher accuracy. SOLUTION: Measuring point group data are obtained along a curved surface containing a character line to be measured (S1). Then, a curved surface is formed to link the measuring point group data smoothly (S2). Subsequently, a luminance data is mapped based on the positions of a light source and a point of sight previously specified for the curved surface generated at the S2 (S4). A part is tracked where the mapped luminance data on the curved surface at the S4 changes (S5) and a curved line indicating the character line is generated by linking point train data smoothly (S6).
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