CODE TARGET, CORD DETECTION SYSTEM, AND THREE-DIMENSIONAL INFORMATION ACQUISITION SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a code target capable of automatically detecting codes even if photographing is performed at an angle and provide both a code detection system using the coder marker and a three-dimensional information acquisition system.

SOLUTION: The code target 1 is provided in the same plane with both a reference pattern 2 having a circular region C and a code pattern 3 located around the reference pattern 2 and comprising code regions A1-A8 each including one circular arc acquired by equally dividing the circumference of a virtual circle C1 concentric with the center O of the circular region C. The code target 1 also makes concentration levels within the Code regions A1-A8 each corresponding to a code marked by the code region.

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