- Patent Title: Method for producing images with depth information and image sensor
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Application No.: US14647492Application Date: 2013-11-14
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Publication No.: US09699442B2Publication Date: 2017-07-04
- Inventor: Pierre Fereyre , Bruno Diasparra , Vincent Prevost
- Applicant: E2V Semiconductors
- Applicant Address: FR Saint-Égrève
- Assignee: E2V SEMICONDUCTORS
- Current Assignee: E2V SEMICONDUCTORS
- Current Assignee Address: FR Saint-Égrève
- Agency: Hauptman Ham, LLP
- Agent Sean A. Passino
- Priority: FR1261270 20121127
- International Application: PCT/EP2013/073844 WO 20131114
- International Announcement: WO2014/082864 WO 20140605
- Main IPC: H04N13/02
- IPC: H04N13/02 ; G01S17/10 ; G01S17/89 ; G01S7/486 ; G01S7/487 ; H04N13/00

Abstract:
The invention relates to the production of images associating with each point of the image a depth, i.e. a distance between the observed point and the camera that produced the image.A light source emits N trains of light pulses. For each train of rank I=1 to N, charge is integrated in a short time slot of length Tint that starts with a temporal offset ti relative to the pulse, this temporal offset representing a journey time of the light pulse between the light source and the sensor after reflection from a point placed a distance di from the sensor. The temporal offset ti is the same for all the light pulses of the ith pulse train but the temporal offsets ti of the N trains are different from one another in order to correspond to various distances relative to the sensor. The charge photogenerated by the pulses of a given train is accumulated; then the accumulated charge is read in order to produce an image of rank i representing the pixels located at the distance di. The observation of a scene comprises producing N different images by virtue of which it is possible to associate a distance with each pixel.
Public/Granted literature
- US20150319422A1 METHOD FOR PRODUCING IMAGES WITH DEPTH INFORMATION AND IMAGE SENSOR Public/Granted day:2015-11-05
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