公开(公告)号：US20150213620A1

公开(公告)日：2015-07-30

申请号：US14606142

申请日：2015-01-27

Applicant: GLORY LTD.

Inventor： Ryo IKEMOTO ,  Akira BOGAKI ,  Satoru OSHIMA

IPC: G06T7/40 ,  H04N5/30 ,  G06T7/00 ,  H04N5/225

CPC classification number: G06T7/40 ,  G06T7/0002 ,  G06T7/90 ,  G06T2207/10152 ,  G06T2207/30168 ,  G07D7/1205 ,  G07D7/121 ,  G07D7/17 ,  G07D7/187 ,  H04N5/2256 ,  H04N5/30

Abstract: A banknote is irradiated with lights of plural wavelengths. Images of the banknote for each wavelength are acquired. An IR ratio image having a pixel value that is a ratio of a pixel value of the image acquired by the visible light to a corresponding pixel value of the image acquired by the infrared light is generated. The banknote image and the IR ratio image are corrected by a coefficient corresponding to the banknote type, the banknote orientation, and the wavelength. From the banknote image or the IR ratio image, by using the information pertaining to the banknote type, the banknote orientation, and the wavelength, intermediate evaluation values are calculated for each wavelength. Mahalanobis distance is calculated based on the intermediate evaluation values, an average value and a variance-covariance matrix of the intermediate evaluation values, and a degree of soiling is determined based on the Mahalanobis distance.

Abstract translation: 用多个波长的光照射纸币。 获取每个波长的钞票的图像。 产生具有作为通过可见光获取的图像的像素值与通过红外光获取的图像的对应像素值的比率的像素值的IR比图像。 纸币图像和IR比图像通过与纸币类型，钞票取向和波长对应的系数来校正。 从纸币图像或IR比图像，通过使用与纸币类型，纸币取向和波长有关的信息，针对每个波长计算中间评价值。 基于中间评价值，中间评价值的平均值和方差 - 协方差矩阵计算马哈拉诺比斯距离，并且基于马氏距离来确定污染程度。

公开(公告)号：US20240029497A1

公开(公告)日：2024-01-25

申请号：US18374127

申请日：2023-09-28

Applicant: Glory Ltd.

Inventor： Toshihiko BANJOYA ,  Ryo IKEMOTO

IPC: G07D11/237 ,  B65H7/12 ,  G01N21/55

CPC classification number: G07D11/237 ,  B65H7/125 ,  G01N21/55 ,  G07D2211/00 ,  B65H2553/412 ,  B65H2701/1912 ,  G01N2021/558

Abstract: A multifeed detection device according to the present disclosure includes: a light source configured to irradiate a sheet with light; a light receiver configured to receive transmission light transmitted through a sheet and reflection light reflected by a sheet; and a controller configured to acquire, from the light receiver, transmission output data that is output data of the transmission light and reflection output data that is output data of the reflection light, the controller being configured to determine whether or not a multifeed of sheets has occurred based on the transmission output data and the reflection output data.