METHOD AND CAMERA FOR CORRECTING A GEOMETRIC IMAGING ABERRATION IN AN IMAGE RECORDING
For an accurate correction of influences on the imaging accuracy of a camera that occur during the operation of the camera, provision is made for a deformation (V) of the transparent cover (5) and/or the sensor layer (4) which is caused by a pressure difference (D) between an interior pressure (pi)...
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creator | COSIC, Zanin GRUBER, Michael TSMERNEGG, Helfried MUICK, Marc PONTICELLI, Martin NEUNER, Christian JAUK, Helmut |
description | For an accurate correction of influences on the imaging accuracy of a camera that occur during the operation of the camera, provision is made for a deformation (V) of the transparent cover (5) and/or the sensor layer (4) which is caused by a pressure difference (D) between an interior pressure (pi) in the sensor recess (3) and an ambient pressure (P2) of the camera (10) to be modelled by a deformation model (20), for a pressure difference (D) currently prevalent at the time of recording an image (B') with the camera (10) to be determined on the basis of the interior pressure (p1) and ambient pressure (p2) of the camera (10), the pressures being known at the time of recording the image (B'), and the determined pressure difference (D) to be used with the deformation model (20) to determine a deformation (V) of the transparent cover (5) and/or the sensor layer (4) at the time of recording the image (B'), for a displacement of the imaging of the object point (G) onto an arising actual picture point (P") in the image recording (B') caused by the deformation (V) to be determined as geometric imaging aberration (A) from the determined deformation (V) and the known geometric dimensions of the image sensor (1), and for the determined geometric imaging aberration (A) to be corrected in the image recording (B') for the purpose of determining a corrected image recording (B). |
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subjects | CALCULATING COMPUTING COUNTING IMAGE DATA PROCESSING OR GENERATION, IN GENERAL PHYSICS |
title | METHOD AND CAMERA FOR CORRECTING A GEOMETRIC IMAGING ABERRATION IN AN IMAGE RECORDING |
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