Invention Grant
- Patent Title: Object identification using 3-D curve matching
- Patent Title (中): 使用3-D曲线匹配的对象识别
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Application No.: US13328133Application Date: 2011-12-16
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Publication No.: US09111349B2Publication Date: 2015-08-18
- Inventor: Richard Stephan Szeliski , Edward Hsiao , Sudipta Narayan Sinha , Krishnan Ramnath , Charles Lawrence Zitnick, III , Simon John Baker
- Applicant: Richard Stephan Szeliski , Edward Hsiao , Sudipta Narayan Sinha , Krishnan Ramnath , Charles Lawrence Zitnick, III , Simon John Baker
- Applicant Address: US WA Redmond
- Assignee: Microsoft Technology Licensing, LLC
- Current Assignee: Microsoft Technology Licensing, LLC
- Current Assignee Address: US WA Redmond
- Agent Sandy Swain; Peter Taylor; Micky Minhas
- Main IPC: G06K9/00
- IPC: G06K9/00 ; G06T7/00

Abstract:
The claimed subject matter provides for systems and/or methods for identification of instances of an object of interest in 2D images by creating a database of 3D curve models of each desired instance and comparing an image of an object of interest against such 3D curve models of instances. The present application describes identifying and verifying the make and model of a car from a possibly single image—after the models have been populated with training data of test images of many makes and models of cars. In one embodiment, an identification system may be constructed by generating a 3D curve model by back-projecting edge points onto a visual hull reconstruction from silhouettes of an instance. The system and methods employ chamfer distance and orientation distance provides reasonable verification performance, as well as an appearance model for the taillights of the car to increase the robustness of the system.
Public/Granted literature
- US20130156329A1 OBJECT IDENTIFICATION USING 3-D CURVE MATCHING Public/Granted day:2013-06-20
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