JP2014102766A5

JP2014102766A5 -

Info

Publication number: JP2014102766A5
Application number: JP2012255686A
Authority: JP
Filing date: 2012-11-21
Publication date: 2015-06-25
Anticipated expiration: 2032-11-21

Description

なお、撮像タイミングセンサ１１１の受光部１１２ｂは、傾斜メダル通路１０５Ｓを挟んで発光部１１２ａと対向する位置に配置することもできる。その場合、プリズム１１２ｃは不要となる。
Note that the light receiving unit 1 1 2b of the imaging timing sensor 111 can also be disposed at a position facing the light emitting unit 1 1 2a with the inclined medal passage 105S interposed therebetween. In that case, the prism 1 1 2c is unnecessary.

ステップＳ２５７において「θ≠０」の場合、ステップＳ２５８において、ステップＳ２５５で算出された相違度ＤＦが最小相違度ＤＦｍ未満であるか否かが判定される。「ＤＦ＜ＤＦｍ」の場合、すなわち、ステップＳ２５４で算出された相違度ＤＦが既に設定されている最小相違度ＤＦｍより小さい場合、ステップＳ２５９に進み、ステップＳ２５９およびＳ２６０において、最小相違度ＤＦｍおよび最小相違度回転角度θｍに現在の相違度ＤＦおよび回転角度θが設定される。換言すれば、最小相違度ＤＦｍおよび最小相違度回転角度θｍが更新される。「ＤＦ≧ＤＦｍ」の場合、ステップＳ２６１に進み、現在の最小相違度ＤＦｍおよび最小相違度回転角度θｍがそのまま維持される。 If “θ ≠ 0” in step S257, it is determined in step S258 whether or not the difference DF calculated in step S255 is less than the minimum difference DFm. If "DF <DFm", i.e., if the minimum dissimilarity DFm smaller degree of difference DF calculated in step S 254 has already been set, the process proceeds to step S259, in step S259 and S260, the minimum dissimilarity DFm and The current dissimilarity DF and rotation angle θ are set to the minimum dissimilarity rotation angle θm. In other words, the minimum difference degree DFm and the minimum difference degree rotation angle θm are updated. If “DF ≧ DFm”, the process proceeds to step S261, and the current minimum dissimilarity DFm and minimum dissimilarity rotation angle θm are maintained as they are.

Claims

A plurality of reference images corresponding to the reference disk are prepared, a captured image is obtained by capturing an image of one surface of the determination target disk with an imaging unit, and the determined image based on the acquired captured image of the determination target disk and the plurality of reference In the disc discrimination method in which the discrimination means discriminates the authenticity of the disc to be discriminated by comparing with an image,
At least one surface of the reference disk is imaged by the imaging means, and a first reference image based on the acquired captured image of the reference disk and an image obtained by rotating the first reference image at a plurality of different rotation angles, respectively. A reference image registration step of preparing a plurality of corresponding second reference images and a plurality of third reference images obtained by translating the first and second reference images by coordinate transformation;
An image comparison determination step of comparing the image to be determined with the first, second and third reference images, and determining the authenticity of the disc to be determined from the comparison result;
Disc discriminating method, characterized by comprising:

A plurality of reference images corresponding to a reference disk are held in a reference image holding unit, an image of one side of a disc to be discriminated is picked up by an imaging unit to obtain a picked-up image, and a discriminated image based on the acquired captured image of the disc to be discriminated In the disc discriminating apparatus in which the discriminating unit discriminates the authenticity of the disc to be discriminated by comparing the plurality of reference images with
The reference image holding means includes a first reference image based on a captured image of the reference disk, and a plurality of second reference images corresponding to images obtained by rotating the first reference image at a plurality of different rotation angles. A plurality of third reference images obtained by translating the first and second reference images by the image moving means,
The disc discrimination device, wherein the discriminating unit compares the discriminated image with the first, second and third reference images, and discriminates the authenticity of the disc to be discriminated from the comparison result.