CAMERA SYSTEM, ESPECIALLY FOR A VEHICLE, AND METHOD FOR ASCERTAINING IMAGE INFORMATION OF A SIGNAL SOURCE PULSED AS A FUNCTION OF TIME
First Claim
1. A camera system, comprising:
- a camera that includes an image sensor and a filter mask; and
a control and evaluation device that receives an image signal output by the image sensor, wherein;
the image sensor includes an array of sensor pixels outputting pixel signals,the filter mask includes an array of filters that are situated in front of the sensor pixels and have different wavelength-selective transmission responses,a portion of the filters includes attenuation filters, andsensor pixels, in front of which in each case one of the attenuation filters is disposed, outputs attenuation pixel signals,the image signal output by the image sensor has a first subsequence of first frames taken with a first exposure time and a second subsequence of second frames taken with a second exposure time,the second exposure time is greater than the first exposure time, andthe control and evaluation device evaluates the attenuation pixel signals of the second subsequence.
1 Assignment
0 Petitions
Accused Products
Abstract
A camera system is described, particularly for a vehicle, the camera system having at least: a camera which has an image sensor and a filter mask, and a control and evaluation device which receives image signals output by the image sensor, the image sensor having an array of sensor pixels outputting pixel signals, and the filter mask having an array of filters which are disposed in front of the sensor pixels and have different wavelength-selective transmission response, a portion of the filters being attenuation filters, and sensor pixels, in front of which in each case one of the attenuation filters is disposed, outputting attenuation pixel signals. The attenuation filters advantageously attenuate white light more strongly than the other filters of the filter mask; in particular, they are blue pixels.
7 Citations
27 Claims
-
1. A camera system, comprising:
-
a camera that includes an image sensor and a filter mask; and a control and evaluation device that receives an image signal output by the image sensor, wherein; the image sensor includes an array of sensor pixels outputting pixel signals, the filter mask includes an array of filters that are situated in front of the sensor pixels and have different wavelength-selective transmission responses, a portion of the filters includes attenuation filters, and sensor pixels, in front of which in each case one of the attenuation filters is disposed, outputs attenuation pixel signals, the image signal output by the image sensor has a first subsequence of first frames taken with a first exposure time and a second subsequence of second frames taken with a second exposure time, the second exposure time is greater than the first exposure time, and the control and evaluation device evaluates the attenuation pixel signals of the second subsequence. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 20, 21, 22, 23, 24, 25)
-
-
18. A method for ascertaining image information of a signal source pulsed as a function of time, comprising:
-
imaging light through a filter mask onto an image sensor of a multimodal camera; one of filtering and attenuating incident light in different wavelength ranges by filters of the filter mask that are situated in front of sensor pixels of the image sensor; outputting attenuation pixel signals from sensor pixels, in front of which attenuation filters are disposed; reading out the image sensor with at least a first subsequence having a short first exposure time and a second subsequence having a long second exposure time; evaluating the attenuation pixel signals of the second subsequence; and at least one of (i) carrying out an image recognition and (ii) generating a two-dimensional sub-image from the attenuation pixel signals of the second subsequence. - View Dependent Claims (19, 26, 27)
-
Specification