Abstract:
A lens and color filter assembly contains lens units, and each lens unit is assigned to a single-color color filter unit. The lens and color filter assembly may be combined with pixel units such that a plurality of monochromatic, low-resolution images can be obtained, and the monochromatic images refer to shifted versions of the same image object. By a super-resolution technique comprising shift-compensation a mosaicked image is obtained which is then demosaiced. In the resultant image only few artifacts appear. Simple color filter arrays allow a simplified fabrication process and provide less chromatic aberrations at less computational effort.
Abstract:
A lens and color filter assembly contains lens units, and each lens unit is assigned to a single-color color filter unit. The lens and color filter assembly may be combined with pixel units such that a plurality of monochromatic, low-resolution images can be obtained, and the monochromatic images refer to shifted versions of the same image object. By a super-resolution technique comprising shift-compensation a mosaicked image is obtained which is then demosaiced. In the resultant image only few artifacts appear. Simple color filter arrays allow a simplified fabrication process and provide less chromatic aberrations at less computational effort.
Abstract:
A lens unit (120) shows longitudinal chromatic aberration and focuses an imaged scene into a first image for the infrared range in a first focal plane and into a second image for the visible range in a second focal plane. An optical element (150) manipulates the modulation transfer function assigned to the first and second images to extend the depth of field. An image processing unit (200) may amplify a modulation transfer function contrast in the first and second images. A focal shift between the focal planes may be compensated for. While in conventional approaches for RGBIR sensors contemporaneously providing both a conventional and an infrared image of the same scene the infrared image is severely out of focus, the present approach provides extended depth of field imaging to rectify the problem of out-of-focus blur for infrared radiation. An imaging system can be realized without any apochromatic lens.
Abstract:
A lens and colour filter assembly contains lens units, and each lens unit is assigned to a single-colour colour filter unit. The lens and colour filter assembly may be combined with pixel units such that a plurality of monochromatic, low-resolution images can be obtained, and the monochromatic images refer to shifted versions of the same image object. By a super-resolution technique comprising shift-compensation a mosaicked image is obtained which is then demosaiced. In the resultant image only few artefacts appear. Simple colour filter arrays allow a simplified fabrication process and provide less chromatic aberrations at less computational effort.
Abstract:
A camera includes an optical system configured to record images based on light entering the optical system from an optical field of view, a radar system configured to obtain radar information of targets within a radar field of view that is overlapping with the optical field of view, the radar information including one or more of a distance information indicating the distance of targets with respect to the camera, a speed information indicating the speed of targets with respect to the camera and dimension information indicating a dimension of targets, and a control unit configured to control at least one parameter of the optical system based on the obtained radar information.
Abstract:
An optical system (110) includes a lens unit (112) with a plurality of lenses. An out-of-focus point spread function of the lens unit (112) includes an annular intensity distribution with at least one ring-shaped side peak at a radial distance to a center point. A birefringent device (115) in an optical path of the optical system (110) is adapted to selectively attenuate the ring-shaped side peak in the out-of-focus point spread function of the lens unit (112).
Abstract:
An optical system (110) includes a lens unit (112) with a plurality of lenses. An out-of-focus point spread function of the lens unit (112) includes an annular intensity distribution with at least one ring-shaped side peak at a radial distance to a center point. A birefringent device (115) in an optical path of the optical system (110) is adapted to selectively attenuate the ring-shaped side peak in the out-of-focus point spread function of the lens unit (112).
Abstract:
An optical system includes an illumination unit and an imaging unit configured to image a scene including at least one object into a first image and a second image by using Helmholtz reciprocity. The illumination unit is configured to emit light into at least one light emitting solid angle and the imaging unit is configured to receive light from a light receiving solid angle. The light receiving solid angle is at least as large as each of the light emitting solid angles.
Abstract:
A device comprising a circuitry configured to obtain a sequence of digital images from an image sensor; select a region of interest within a digital image of the sequence of digital images; perform motion compensation on the region of interest to obtain a motion compensated region of interest based on motion information obtained from the sequence of digital images and a predefined accumulated time interval; define a mask pattern based on the compensated region of interest; apply the mask pattern to an electronic light valve.
Abstract:
A lens unit (120) shows longitudinal chromatic aberration and focuses an imaged scene into a first image for the infrared range in a first focal plane and into a second image for the visible range in a second focal plane. An optical element (150) manipulates the modulation transfer function assigned to the first and second images to extend the depth of field. An image processing unit (200) may amplify a modulation transfer function contrast in the first and second images. A focal shift between the focal planes may be compensated for. While in conventional approaches for RGBIR sensors contemporaneously providing both a conventional and an infrared image of the same scene the infrared image is severely out of focus, the present approach provides extended depth of field imaging to rectify the problem of out-of-focus blur for infrared radiation. An imaging system can be realized without any apochromatic lens.