Optical Self-Diagnosis of a Stereoscopic Camera System
First Claim
1. A method for optical self-diagnosis of a camera system adapted to record a stereo image obtained from at least two partial images, the method comprising:
- a) recording a first partial image and a second partial image of an object space with the camera system from different perspectives;
b) producing a depth image from said first partial image and said second partial image on the basis of parallax between mutually corresponding pixels recording said first and second partial images, and determining disparity values representing said parallax;
c) determining a number of valid disparity values of the depth image, wherein a valid disparity value is defined as a disparity value which is determined for two pixels, recording the first and second partial images, which are identified as being mutually corresponding either unequivocally or at least with a defined probability;
d) producing a warning signal depending on the number of said valid disparity values.
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Abstract
The present invention relates to a method for the optical self-diagnosis of a camera system and to a camera system for carrying out the method. The method comprises recording stereo images obtained from in each case at least two partial images (2, 3) creating a depth image, that is to say a disparity map (5) given by calculated disparity values, determining a number of valid disparity values (6) of the disparity map (5), and outputting a warning signal depending on the number of valid disparity values determined. A device for carrying out such a method comprises a stereo camera (1) having at least two lenses (7,8) and image sensors, an evaluation unit and a display unit.
59 Citations
11 Claims
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1. A method for optical self-diagnosis of a camera system adapted to record a stereo image obtained from at least two partial images, the method comprising:
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a) recording a first partial image and a second partial image of an object space with the camera system from different perspectives; b) producing a depth image from said first partial image and said second partial image on the basis of parallax between mutually corresponding pixels recording said first and second partial images, and determining disparity values representing said parallax; c) determining a number of valid disparity values of the depth image, wherein a valid disparity value is defined as a disparity value which is determined for two pixels, recording the first and second partial images, which are identified as being mutually corresponding either unequivocally or at least with a defined probability; d) producing a warning signal depending on the number of said valid disparity values. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification
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- Resources
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Current AssigneeHella KGaA Hueck & Company
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Original AssigneeHella KGaA Hueck & Company
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InventorsSong, Miao, Lojewski, Bjorn
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Granted Patent
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Time in Patent OfficeDays
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Field of Search
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US Class Current348/46
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CPC Class CodesG06T 2207/10012 Stereo imagesG06T 2207/30168 Image quality inspectionG06T 7/0002 Inspection of images, e.g. ...H04N 13/00 Stereoscopic video systems;...H04N 13/189 Recording image signals; Re...H04N 13/246 Calibration of camerasH04N 13/296 Synchronisation thereof; Co...H04N 17/002 for television cameras
