Invention Grant
- Patent Title: Method for advanced and low cost cross traffic alert, related processing system, cross traffic alert system and vehicle
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Application No.: US15471138Application Date: 2017-03-28
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Publication No.: US10242272B2Publication Date: 2019-03-26
- Inventor: Giuseppe Spampinato , Salvatore Curti , Nunziata Ivana Guarneri , Arcangelo Ranieri Bruna
- Applicant: STMicroelectronics S.r.l.
- Applicant Address: IT Agrate Brianza
- Assignee: STMicroelectronics S.r.l.
- Current Assignee: STMicroelectronics S.r.l.
- Current Assignee Address: IT Agrate Brianza
- Agency: Crowe & Dunlevy
- Priority: IT102016000094858 20160921
- Main IPC: G06K9/00
- IPC: G06K9/00 ; G06K9/46 ; G06K9/62 ; G08G1/0962

Abstract:
A sequence of images obtained by a camera mounted on a vehicle is processed in order to generate Optical Flow data including a list of Motion Vectors being associated with respective features in the sequence of images. The Optical Flow data is analyzed to calculate a Vanishing Point by calculating the mean point of all intersections of straight lines passing through motion vectors lying in a road. An Horizontal Filter subset is determined taking into account the Vanishing Point and a Bound Box list from a previous frame in order to filter from the Optical Flow the horizontal motion vectors. The subset of Optical Flow is clustered to generate the Bound Box list retrieving the moving objects in a scene. The Bound Box list is sent to an Alert Generation device and an output video shows the input scene where the detected moving objects are surrounded by a Bounding Box.
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