Camera device and method for capturing a surrounding region of a vehicle in a situation-adapted manner
A camera device includes an optronics system and an image capture control unit, for acquiring a sequence of images of a surrounding region of a vehicle. The optronics system includes a wide-angle optical system and a high-resolution image acquisition sensor. The optronics system and the image capture control unit are configured to generate a reduced-resolution binned image of the entire capture region of the optronics system, or to capture an unbinned high-resolution image of a subregion of the capture region, respectively for each individual image of the sequence of images, depending on a current traffic and/or surrounding situation. A height and a width of the subregion are set depending on the current situation. A size of the subregion is set such that the pixel count of the high-resolution image of the subregion is no greater than the pixel count of the reduced-resolution image of the entire capture region.
1. A camera device for capturing a surrounding region of a vehicle, the camera device comprising:
an optronics system and an image capture control unit, which are configured to acquire a sequence of images of the surrounding region,
wherein:
the optronics system comprises a wide-angle optical system and a high-resolution image acquisition sensor, and
the optronics system and the image capture control unit are configured:
to produce, respectively for each individual image of the sequence of images, either a reduced-resolution image as a binned image, which has a reduced resolution that is reduced by pixel binning, of an entire capture region of the optronics system, or a high-resolution image as an unbinned image with a maximum resolution of a subregion of the capture region of the optronics system, depending on a current traffic and/or surrounding situation, wherein an image height and an image width of the subregion in the high-resolution image are set depending on the current traffic and/or surrounding situation, and wherein a size of the subregion is set such that a pixel count of the high-resolution image of the subregion is no greater than a pixel count of the reduced-resolution image of the entire capture region of the optronics system; and
to control the image height and/or the image width of the subregion in a current image of the sequence of images in response to a recognized content that is recognized in at least one previous image of the sequence of images.
2. The camera device according to claim 1 , wherein the optronics system and the image capture control unit are configured to acquire the sequence of images so that a center point of each said subregion is identical to a center point of the entire capture region of the optronics system.
3. The camera device according to claim 1 , wherein the optronics system and the image capture control unit are configured to shift a vertical position of the subregion as a function of the current traffic and/or surrounding situation.
4. The camera device according to claim 3 , wherein the optronics system and the image capture control unit are configured to shift a horizontal position of the subregion as a function of the current traffic and/or surrounding situation.
5. The camera device according to claim 1 , wherein the optronics system and the image capture control unit are configured to acquire the sequence of images so that the pixel count of the high-resolution image of the subregion amounts to 2.5 megapixels at most.
6. The camera device according to claim 1 , wherein the optronics system and the image capture control unit are configured to acquire the sequence of images so that the pixel count of the high-resolution image of the subregion is constant during acquisition of the sequence of images of the surrounding region.
7. The camera device according to claim 1 , wherein a prediction of the recognized content for the current image is taken into account for controlling the image height and/or the image width of the subregion.
8. The camera device according to claim 1 , wherein the optronics system and the image capture control unit are configured to acquire the sequence of images so that the sequence of images includes, periodically alternatingly, the reduced-resolution image of the entire capture region and the high-resolution image of the subregion.
9. A method of capturing a surrounding region of a vehicle by an optronics system, wherein the optronics system comprises a wide-angle optical system and a high-resolution image acquisition sensor, and the method comprises acquiring a sequence of images of the surrounding region, which includes: of e ego-vehicle,
producing, respectively for each individual image of the sequence of images, either a reduced-resolution image as a binned image, which has a reduced resolution that is reduced by pixel binning, of an entire capture region of the optronics system, or a high-resolution image as an unbinned image with a maximum resolution of a subregion of the capture region of the optronics system, depending on a current traffic and/or surrounding situation,
a setting an image height and an image width of the subregion respectively in each said high-resolution image depending on the current traffic and/or surrounding situation,
setting a size of the subregion such that a pixel count of the high-resolution image of the subregion is no greater than a pixel count of the reduced-resolution image of the entire capture region of the optronics system, and
controlling the image height and/or the image width of the subregion in a current image of the sequence of images in response to a recognized content that is recognized in at least one previous image of the sequence of images.
10. The camera device according to claim 1 , wherein the optronics system and the image capture control unit are configured to shift a horizontal position of the subregion as a function of the current traffic and/or surrounding situation.