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公开(公告)号：US09218538B2
公开(公告)日：2015-12-22
申请号：US13753790
申请日：2013-01-30
Applicant: Xerox Corporation
Inventor： Zhigang Fan , Hengzhou Ding , Yonghui Zhao , Shen-Ge Wang
CPC classification number: G06K9/2027 , G06K9/3233 , G06K9/4633 , G06T7/13 , G06T7/174 , G06T2207/10152 , G06T2207/20192
Abstract: Methods and systems for detecting an object borderline. A first image with respect to the object can be captured by an image-capturing unit without a flash light and borderlines of the object can be detected. If the detection is successful, the detected borderlines can be outputted. Otherwise, a second image with respect to the object can be captured by the image-capturing unit by applying a flash light and the borderlines can be detected in the image. A geometric transformation between the two images can then be estimated. Finally, the border lines in the first image can be determined by transforming the borderlines detected in the second image. Such an approach effectively detects the appliance borderlines and avoids artifacts caused by applying flash.
Abstract translation: 用于检测物体边界线的方法和系统。 相对于物体的第一图像可以由没有闪光灯的图像拍摄单元捕获，并且可以检测对象的边界线。 如果检测成功，则可以输出检测到的边界线。 否则，可以通过应用闪光灯由图像捕获单元捕获关于对象的第二图像，并且可以在图像中检测边界线。 然后可以估计两个图像之间的几何变换。 最后，可以通过变换在第二图像中检测到的边界来确定第一图像中的边界线。 这种方法有效地检测设备的边界，并避免因应用闪光灯引起的伪影。
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公开(公告)号：US20140211023A1
公开(公告)日：2014-07-31
申请号：US13753790
申请日：2013-01-30
Applicant: XEROX CORPORATION
Inventor： Zhigang Fan , Hengzhou Ding , Yonghui Zhao , Shen-Ge Wang
IPC: G06F3/00
CPC classification number: G06K9/2027 , G06K9/3233 , G06K9/4633 , G06T7/13 , G06T7/174 , G06T2207/10152 , G06T2207/20192
Abstract: Methods and systems for detecting an object borderline. A first image with respect to the object can be captured by an image-capturing unit without a flash light and borderlines of the object can be detected. If the detection is successful, the detected borderlines can be outputted. Otherwise, a second image with respect to the object can be captured by the image-capturing unit by applying a flash light and the borderlines can be detected in the image. A geometric transformation between the two images can then be estimated. Finally, the border lines in the first image can be determined by transforming the borderlines detected in the second image. Such an approach effectively detects the appliance borderlines and avoids artifacts caused by applying flash.
Abstract translation: 用于检测物体边界线的方法和系统。 相对于物体的第一图像可以由没有闪光灯的图像拍摄单元捕获，并且可以检测对象的边界线。 如果检测成功，则可以输出检测到的边界线。 否则，可以通过应用闪光灯由图像捕获单元捕获关于对象的第二图像，并且可以在图像中检测边界线。 然后可以估计两个图像之间的几何变换。 最后，可以通过变换在第二图像中检测到的边界来确定第一图像中的边界线。 这种方法有效地检测设备的边界，并避免因应用闪光灯引起的伪影。
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