Barco N.v.

Arnout Robert Leontine Vetsuypens

Cedric Fabrice Marchessoux

Peter Eric Rita Janssens

Olivier Jacques Achille Charlier

Wouter M F Woestenborghs

The present invention relates to image projection and provides a method and system for performing color calibration of light sources and correction towards a color target, for example a whitepoint target. The calibration and correction considers the ambient temperature and that the projector output has an arbitrary dimming level. The correction can be made automatic and can be performed by an operator in the field by pressing a button.

Method and system for color point calibration of light source projector

A display method and display device are described having at least one sensor for detecting a property of light such as the intensity, color and/or color point of light emitted from at least one display area of a display device into a viewing angle of the display device and to measure and isolate the contributions of ambient light. An advantage of the sensor system is that it can be used for real-time measurements, e.g. while the display device is in use, and off-line, e.g. when the normal display functionality is interrupted, with a high signal to noise ratio and simultaneously can isolate the contributions of the signals from the backlight of the display device and the signals from the ambient light.

Display device and means to measure and isolate the ambient light

A system and method provide enhanced perceived contrast within a region of interest () of an image being displayed in order to enable viewers to more easily perceive subtle features in images, such as during medical diagnostics. The enhanced perceived contrast may be implemented using software only, hardware only, or a combination of hardware and software. If the backlight of a display includes only one or few light sources, the enhanced perceived contrast can be achieved through a software only solution in which the area () outside of the ROI () is darkened. If the backlight of the display comprises, for example, an LED matrix, enhanced perceived contrast may be implemented through a hardware only solution in which the luminance of the display is increased in the ROI (). In addition, enhanced perceived contrast may also be achieved through a solution utilizing both hardware and software.

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Denderbelle, Belgium

Arnout Robert Leontine Vetsuypens