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公开(公告)号:WO1995004612A1
公开(公告)日:1995-02-16
申请号:PCT/US1994005887
申请日:1994-05-25
Applicant: SIMCO/RAMIC CORPORATION
Inventor: SIMCO/RAMIC CORPORATION , WALSH, Casey, P. , HOFFMAN, Philip, L. , DRUMMOND, William, S. , SQUYRES, H., Parks
IPC: B07C05/342
CPC classification number: B07C5/365 , B07C5/3416 , B07C5/3422 , Y10S209/938
Abstract: A plastic container sorter (10) moves labeled plastic containers (14, 20, 48, 54, 58) of various colors and transparencies through an inspection zone (18). A pair of line-scanning color cameras (22, 24) capture respective transmittance and reflectance images of the containers and generate raw transmittance and reflectance image data. The raw container data are digitized, normalized, and binarized to provide accurate transmittance and reflectance container RGB image data and binarized image data for differentiating container image data from background data. Container sorting entails eroding (120) the binarized transmittance image and merging (122) the eroded image with the transmittance image data to yield a transmittance image. The eroded transmittance image is analyzed (124, 126) to determine whether the container is opaque. If the container is opaque, color analysis proceeds by analyzing the reflectance image data. If, however, the container is not opaque, transmittance image data are used to classify the container as green transparent (140), translucent (142), or clear transparent (142). Classified containers are transferred to an ejection conveyor (46). Side discharge of a classified container is effected by an air ejector (64) blast that is timed in response to sensing a particular container adjacent to an appropriate side discharge station (60).
Abstract translation: 塑料容器分类器(10)通过检查区(18)移动各种颜色和透明胶片的标签塑料容器(14,20,48,54,58)。 一对线扫描彩色摄像机(22,24)捕获容器的各个透射率和反射率图像,并产生原始透射率和反射率图像数据。 原始容器数据被数字化,归一化和二值化,以提供准确的透射率和反射容器RGB图像数据和用于将容器图像数据与背景数据区分开的二值化图像数据。 容器排序需要侵蚀(120)二值化的透射图像并将侵蚀的图像与透射图像数据合并(122)以产生透射图像。 分析侵蚀的透射率图像(124,126)以确定容器是不透明的。 如果容器是不透明的,则通过分析反射率图像数据进行颜色分析。 然而,如果容器不是不透明的,则透射率图像数据用于将容器分类为绿色透明(140),半透明(142)或透明透明(142)。 分类容器被转移到排出输送机(46)。 分类容器的侧排放通过响应于感测到与适当侧排放站(60)相邻的特定容器而定时的空气喷射器(64)爆炸来实现。