Abstract: The invention relates to a sensor unit for a display system adapted for generating three dimensional images by combining at least first sub-images for a first eye and second sub-images for a second eye. The sensor unit includes a detector and is adapted to individually detect irradiation properties of the radiation used for the displaying of said first sub-images and/or of the radiation used for the displaying of said second sub-images.

Abstract: A system and method for increasing perceived contrast in a medical display (174) is provided. The method involves temporarily increasing luminance output of at least part of a display (174) in response to a received request for improved visualization. To compensate for the change in luminance especially while the viewer's eyes adapt to the change in luminance, the method includes continuously modifying the display parameters especially during an adaptation period to match an adaptation of the viewer's eyes. The modified parameters at any given may correlate to the degree of adaptation by the viewer's eyes to the change. After a period of time, the display (174) may be returned to its normal operating luminance and corresponding settings, which may be selected to maximize the lifetime of the display (174).

Abstract: A system and method for increasing perceived contrast in a medical display is provided. The method involves temporarily increasing luminance output of at least part of a display in response to a received request for improved visualization. To compensate for the change in luminance especially while the viewer's eyes adapt to the change in luminance, the method includes continuously modifying the display parameters especially during an adaptation period to match an adaptation of the viewer's eyes. The modified parameters at any given may correlate to the degree of adaptation by the viewer's eyes to the change. After a period of time, the display may be returned to its normal operating luminance and corresponding settings, which may be selected to maximize the lifetime of the display.

Abstract: A display has a spatial light modulator for dynamically controlling a luminance of each pixel according to an input signal, the spatial light modulator having a non-uniform spatial characteristic, the display also having an optical filter having a spatial pattern to alter the luminance to compensate at least partially for the non-uniform spatial characteristic. An electronic signal processing element applies some pre ompensation predominantly of higher spatial frequencies for the non-uniform spatial characteristic. Such dynamic and optical compensation can enable tuning for different optimizations or for compensating for variations over time. A backlight has an optical source and an optical filter, the source having a color output which has a non-uniform spatial characteristic, and the optical filter having a spatial pattern to alter the color to compensate in part at least for the non-uniform spatial characteristic.

Abstract: The present invention relates to a method for compensating ageing effects of pixel outputs displaying an image on a display device. The method involves displaying a first image on an active display area (6) on the display device (1) having a first plurality of pixels; displaying a second image on a sub-area (7) of the display device (1) and having a second plurality of pixels, the active display area (6) being larger than the sub-area (7) and the second image being smaller than the first image and having fewer pixels than the active display area (6); driving the pixels of the sub-area (7) with pixel values that are representative or indicative for the pixels in the activity display area (6); making optical measurements on light emitted from the sub-area (7) and generating optical measurement signals (11) therefrom, and; controlling the display of the image on the active display area (6) in accordance with the optical measurement signals (11) of the sub-area (7).

Abstract: A method for transmission of images and/or video over bandwidth limited transmission channels having varying available bandwidth, which uses a classification algorithm to decompose the images and/or video to be transmitted into multiple spatial areas, each area having a specific image type; detecting the image type of each of those areas; and separately selecting for each of those areas an image and/or video encoding algorithm having a compression ratio. The classification algorithm is used to prioritize each of the areas, increase the compression ratio of the image and/or video encoding algorithm dedicated to spatial areas having lower priority in case of decreasing bandwidth.

Abstract: An optical microscope digital image processing emulator or emulation is described in which a user input device is used to assist in the emulation of an operation of an optical microscope in a digital image processing system. The emulator or emulation is programmable via a library of processing functions stored in memory. The input device is adapted to generate control signals based on a user input, and to transfer the control signals to a processor, the processor being adapted to alter one or more parameters of the processing functions based on the control signals. Embodiments of the present invention emulate the same control and responsiveness found with an optical microscope on a digital pathology computer system, thereby improving the workflow of pathology specialists by allowing better and faster control over the way images are presented.

Abstract: The present invention relates to a system and a method for avoiding misinterpretation of images due to defective pixels present in matrix addressed electronic displays during display time. This may be very important e.g. in the medical world. The method comprises obtaining information on the presence of the defective pixels in the display, and modulating the operation of the display so as to indicate, emphasize or warn for the presence of said defective pixels on the actual display having defect pixels, or adapting the image content of the defective pixels or of pixels in the neighborhood of the defective pixels so as to indicate, emphasize or warn for the presence of said defective pixels in a copy of the displayed image. Such copy may be a hard copy or an electronic copy. A corresponding device is also provided.

Abstract: A system and method for increasing perceived contrast in a medical display (174) is provided. The method involves temporarily increasing luminance output of at least part of a display (174) in response to a received request for improved visualization. To compensate for the change in luminance especially while the viewer's eyes adapt to the change in luminance, the method includes continuously modifying the display parameters especially during an adaptation period to match an adaptation of the viewer's eyes. The modified parameters at any given may correlate to the degree of adaptation by the viewer's eyes to the change. After a period of time, the display (174) may be returned to its normal operating luminance and corresponding settings, which may be selected to maximize the lifetime of the display (174).

Abstract: A stereoscopic imaging system is described for generating a stereoscopic image of a scene. The stereoscopic imaging system is adapted for generating at least one sub-image for a first eye and at least one sub-image for a second eye whereby the at least one sub-image for the first eye and at least one sub-image for the second eye adapted for combining into the stereoscopic image. The image data for producing at least one of the sub-images for the first eye and/or for the second eye is generated based on a combination of the basic image data for the first eye and the basic image data for the second eye. The basic image data for the first eye thereby is the image information received by the first eye when the scene is seen by the first eye only and the basic image data for the second eye thereby is the image information received by the second eye when the scene is seen by the second eye only.

Abstract: The invention describes a method for improving the spatial and off-axis conformance of display systems with respect to an enforced greyscale or color display standard. In the display systems, the native transfer curve is obtained for each pixel or zone of pixels, i.e. as a function of position on the display and as a function of viewing-angle. Once that information is available, an optimal conversion scheme from P-value to DDL can be created for each position on the display and this for all possible viewing-angles. In use, the conversion scheme is used to obtain an improved DICOM behavior. This optimization is also done with respect to the viewing-angle, based on a pre-set, selectable or measured viewing angle.

Abstract: The range of embodiments includes systems, methods, and apparatus for defect compensation that may be applied to displays having multiple imaging layers, such as high dynamic range displays, and/or to stereoscopic displays, such as autostereoscopic displays.

Abstract: The range of embodiments includes systems, methods, and apparatus for defect compensation that may be applied to displays having multiple imaging layers, such as high dynamic range displays, and/or to stereoscopic displays, such as autostereoscopic displays.

Abstract: The invention relates to a method for processing an image, adapted for a display comprising a plurality of pixels, comprising the steps of setting, in dependence upon the image content, a portion out of the plurality of pixels to black for obtaining off-pixels thereby reducing the resolution of the display to a predefined value; and sequentially switching the position of the off-pixels over the plurality of pixels comprised by the display. In this way, a possibility for reducing or compensating for image retention in displays is provided.

Abstract: The present invention relates to a method for compensating ageing effects of pixel outputs displaying an image on a display device. The method involves displaying a first image on an active display area (6) on the display device (1) having a first plurality of pixels; displaying a second image on a sub-area (7) of the display device (1) and having a second plurality of pixels, the active display area (6) being larger than the sub-area (7) and the second image being smaller than the first image and having fewer pixels than the active display area (6); driving the pixels of the sub-area (7) with pixel values that are representative or indicative for the pixels in the activity display area (6); making optical measurements on light emitted from the sub-area (7) and generating optical measurement signals (11) therefrom, and; controlling the display of the image on the active display area (6) in accordance with the optical measurement signals (11) of the sub-area (7).

Abstract: Testing a display involves display of a series of test patterns, each at a different luminance or color, and with a predetermined minimum difference of luminance or color from their background, each pattern being unpredictable to a user, and determining if the user has correctly identified the patterns. This can enable a more objective test without needing external measuring equipment. Calibrating the display involves determining an output luminance level by detecting a minimal difference of drive signal to give a just noticeable output luminance difference at a given high luminance drive level, and determining an absolute luminance of the given high input luminance level from the minimal difference and from a predetermined human characteristic of visibility threshold of luminance changes. This can avoid the need for an external or internal sensor. This can be useful during conformance checks or during calibration of the display for example.

Abstract: A method of processing medical imaging volume data in a computer network is described. The method comprises loading a medical imaging data set to be processed to a server computer, processing the data set on the server computer, e.g. by executing a software application, and generating corresponding server-generated results. The server-generated results, e.g. rendered images, may then be transmitted to a client computer for display to a user. This allows users to quickly view the results of the processing because they have not had to wait for the data set to be transferred to their local machine before locally processing the data. However, while this is happening, the data set itself is also transmitted, e.g. as a background operation, to the client computer. Thus eventually the client computer has access to a local copy of the data set and may start processing the data set itself, thus freeing up server resources.

Abstract: The invention relates to a method for reducing imaging artefacts during a frame-changeover from a current frame to a following frame displayed by a display device comprising a plurality of pixels, wherein the artefacts are reduced by overdriving at least one control signal for controlling the pixel intensity of the related pixel during the frame-changeover, wherein the overdrive is carried out in dependence of the magnitude of an intensity step between a designated start intensity value of the pixel within the current frame and a designated target intensity value of the pixel within the following frame.

Abstract: The present invention provides a method for reducing the visual impact of defects present in a matrix display comprising a plurality of pixels, said pixels comprising at least three sub-pixels, each sub-pixel intended for generating a sub-pixel color which cannot be obtained by a linear combination of the sub-pixel colors of the other sub-pixels of the pixel, the method comprising: providing a representation of a human vision system, characterizing at least one defect sub-pixel present in the display, the defect sub-pixel intended for generating a first sub-pixel color, the defect sub-pixel being surrounded by a plurality of non-defective sub-pixels, deriving drive signals for at least some of the plurality of non-defective sub pixels in accordance with the representation of the human vision system and the characterizing of the at least one defect sub-pixel, to thereby minimize an expected response of the human vision system to the defect sub-pixel, and driving at least some of the plurality of non-defective

Abstract: Embodiments include applying a compensation to an image signal based on nonuniformity of a display device. The compensation is based on information about variations in light-output response among elements of the display device. The compensation is also modified based on a characteristic of a desired use of the display.