Abstract: A system evaluates a point of gaze of a user on an object and includes at least one eye tracker camera and at least one positioning camera. The eye tracker camera and the positioning camera are configured to be arranged in fixed positions relative to each other. At least one light source is configured to provide conical reflection from at least one of a user's eyes. At least one computer and at least one object is provided. The geometrical data of the object is stored in a storage device accessible to the computer. Wherein the computer is configured to determine: a gaze line of said user relative to a 3D coordinate system, the position of said at least one object relative to said 3D coordinate system, and a gaze point calculated as the intersection of said gaze line with the surface of said object in said 3D coordinate system.

Abstract: A multiple frame x-ray imaging system is disclosed with capability of differential x-ray exposure of different input areas of an image intensifier or other x-ray detector. Collimators are provided to control the amount of radiation in various regions of the image and image processing is provided to provide the display of images of different qualities.

Abstract: An x-ray system includes an x-ray source, at least one partially transparent x-ray filter, an x-ray detector, a monitor to display x-ray images detected by the detector and image processing. The display includes a dynamic range. The system is configured to generate at least one x-ray image and modify at least one of the at least one image for display by: using the at least one filter to filter x-ray so as to reduce x-ray intensity in at least one part of the image; maintaining at least one part of the image unfiltered by the at least one filter; determining a range in the dynamic range of the display; and modifying at least one pixel in the at least one filtered part of the image based on the determined range of the dynamic range of the display.

Abstract: An imaging system comprising a radiation source and radiation thereby; a detector having an input surface; a monitor configured to display images detected by the detector; a Graphical User Interface (GUI) for determining at least one Region of Interest (ROI) on a displayed image; and a collimator comprising means for modulating intensity of the radiation according to the at least one ROI; wherein the GUI comprises means for displaying detected images and means for determining shape and location of the at least one ROI.