| 摘要 |
PROBLEM TO BE SOLVED: To provide a coin identifying method and device using two light sources for facilitating the acquisition of an clean image of the surface of a coin and allowing high-speed and high-precision identification of the coin. SOLUTION: The first light source 104 for flash image pickup irradiates an outer periphery portion of the surface of the coin C dropping down along a coin path 101 in the moving direction with a first light 105 while the second light source 106 for flash image pickup irradiates a back of the coin C with a second light 107. An image sensor 109 inputs the second light 107 and a reflected light 108 reflected from the coin C and thereby acquires an image signal for the outer periphery portion of the coin C and an image processing part 112 identifies the coin C in accordance with the design of the coin at its outer periphery and surface detected from the image signal. |
