公开(公告)号：US6410872B2

公开(公告)日：2002-06-25

申请号：US46107999

申请日：1999-12-14

申请人： KEY TECHNOLOGY INC

发明人： CAMPBELL DUNCAN B ,  EWAN JAMES ,  LEIDECKER CLIFF J ,  SQUYRES H PARKS ,  KALAYEH HOOSHMAND M

IPC分类号： B07C5/342 ,  G01N21/31

CPC分类号： B07C5/3422 ,  G01N21/31 ,  G01N21/85 ,  G01N2021/8466 ,  Y10S209/938

摘要： A sorting system (110) conveys articles, such as peaches (114) on a conveyor belt (112) past an inspection zone (126) that is lighted by an illumination source (90) radiating a number of emission peaks over visible and infrared portions of the spectrum. The illumination source generates the radiation from an Indium Iodide lamp (92) that is reflected off a parabolic reflector (94) and through a "soda straw" collimator (100) to illuminated the peaches. A detector system (118) employs line scanning visible and infrared cameras (142, 140) to sense visible and IR wavelength reflectance values for the peach meat (124) and peach pit or pit fragments (126). Various image processing and analysis methologies, such as subtraction, ratio, logarithmic, regression, combination, angle, distance, and shape may be employed to enhance the image contrast and classify the resulting data for sorting the peaches. Employing subtraction also cancels "glint" caused by specular reflections of the illumination source off the peaches and into the cameras.

摘要翻译： 分拣系统（110）将诸如输送带（112）上的桃子（114）的物品传送通过照明源（90）照射的检查区域（126），所述照明源（90）在可见光和红外部分上辐射多个发射峰 的光谱。 照明源产生来自抛物面反射器（94）并通过“苏打吸管”准直器（100）反射的碘化铟灯（92）的照射以照亮桃子。 检测器系统（118）使用线扫描可见光和红外摄像机（142,140）来感测桃肉（124）和桃坑或坑碎片（126）的可见光和IR波长反射率值。 可以采用各种图像处理和分析方法，例如减法，比率，对数，回归，组合，角度，距离和形状来增强图像对比度并对所得到的数据进行分类以分类桃子。 采用减法也可消除由于桃子和照相机的照明源的镜面反射引起的“闪烁”。