Patent application number | Description | Published |
20090201320 | TEMPORAL FILTERING OF VIDEO SIGNALS - A process for reducing noise and temporal artifacts (e.g. walking LEDs) on a dual modulation display system by applying temporal filtering to rear modulation signals of a sequence of video frames. Flare and dimming rates are calculated for a current frame in the video. If a flare rate threshold is exceeded, an intensity of the backlight is limited to a predetermined flare rate. If a dimming rate threshold is exceeded, the backlight intensity is limited to a predetermined dimming rate. The limitations are applied, for example, on an element-by-element basis. In the event of a scene change, the limitations do not need to be applied. A forward modulation signal is calculated by taking into account any applied backlight limitations. | 08-13-2009 |
20110305391 | Image Processing and Displaying Methods for Devices that Implement Color Appearance Models - Embodiments of the invention relate generally to image and display processing, and more particularly, to systems, apparatuses, integrated circuits, computer-readable media, and methods that facilitate the prediction of the appearance of color in images for different viewing environments, including high dynamic range images. In some embodiments a method can modify color associated with a source environment at a target environment. The method can include applying different non-linear functions to transform subsets of data representing a color of a sample at the source environment into transformed subsets of data, and generating data representing a chroma correlate as an appearance correlate independent of data representing a hue-related correlate. The chroma correlate can be configured to generate the color at a device at the target environment. | 12-15-2011 |
20120038693 | High Dynamic Range Projection System - Embodiments relate generally to computer-based image processing, and more particularly, to systems, computer-readable media, methods, integrated circuits, and apparatuses to facilitate operation of a projection system with relatively high dynamic range output by, among other things, providing subsets of light patterns along an optical path during respective first and second temporal fields associated with respective first and second illuminants. The projection system can synthesize color for projectable images by combining or otherwise using the subsets of light patterns with an array of color elements to produce projectable images with color in at least the visible spectrum. | 02-16-2012 |
20120212707 | Multi-Segment Imager - Several embodiments of projection systems are disclosed that comprise a plurality of controllable emitters, each said emitter providing light for a light path; a plurality of first optical elements, each said first optical element receiving light from one of said emitters; a controllable modulator receiving light from said plurality of first optical elements; a plurality of conduits, each said conduit disposed over a portion of said controllable modulator; a plurality of second optical elements, each of said second optical elements receiving light from at least one of said plurality of conduits, and a controller for sending control signals to said controllable emitters and said controllable modulator. The illumination from the emitters may form a plurality of overlapping areas of illumination upon a projection screen where the image is intended to be formed. | 08-23-2012 |
20120256941 | Local Definition of Global Image Transformations - A global image adjustment, such as dynamic range adjustment is established based on image characteristics. The image adjustment is based more heavily on pixel values in image areas identified as being important by one or more saliency mapping algorithms. In one application to dynamic range adjustment, a saliency map is applied to create a weighed histogram and a transformation is determined from the weighted histogram. Artifacts typical of local adjustment schemes may be avoided. | 10-11-2012 |
20120320342 | Multi-Segment Imager - Several embodiments of projection systems are disclosed that comprise a plurality of controllable emitters, each said emitter providing light for a light path; a plurality of first optical elements, each said first optical element receiving light from one of said emitters; a controllable modulator receiving light from said plurality of first optical elements; a plurality of conduits, each said conduit disposed over a portion of said controllable modulator; a plurality of second optical elements, each of said second optical elements receiving light from at least one of said plurality of conduits, and a controller for sending control signals to said controllable emitters and said controllable modulator. The illumination from the emitters may form a plurality of overlapping areas of illumination upon a projection screen where the image is intended to be formed. | 12-20-2012 |
20130038790 | Display Management Methods and Apparatus - Apparatus and methods for mapping video signal parameters such as tone and color may be applied at various points in a video generation and delivery pipeline. apparatus may be configured to control mappings based on a range of inputs which may include one or more of: ambient conditions, user inputs, control information, adaptation models. Apparatus and methods may be applied to display video or other images so as to preserve a creative intent embodied in video or other image data. | 02-14-2013 |
20140002737 | Generating Alternative Versions of Image Content Using Histograms | 01-02-2014 |
20140043352 | High Luminance Projection Displays And Associated Methods - Projection displays include a highlight projector and a main projector. Highlights projected by the highlight projector boost luminance in highlight areas of a base image projected by the main projector. Various highlight projectors including steerable beams, holographic projectors and spatial light modulators are described. | 02-13-2014 |
20140160143 | Method of Adapting a Source Image Content to a Target Display - Source image content is adapted to a target display. Target image content associated with the target display is provided. A histogram is computed for the target image content. A prominent feature present in the target histogram is determined. A histogram is computed for the source image content. The source content histogram is manipulated to reflect the determined target histogram prominent feature(s). Adapted source image content is generated based on the manipulated source histograms(s). Another prominent feature present in the target histogram is determined. The source histogram is further manipulated to reflect the other prominent determined target histogram features. Further adapted source image content is generated based on the further manipulated source histogram if the adapted source image content has insufficient image quality and perceptual color characteristics. | 06-12-2014 |
20150084978 | LOCAL DEFINITION OF GLOBAL IMAGE TRANSFORMATIONS - A global image adjustment, such as dynamic range adjustment is established based on image characteristics. The image adjustment is based more heavily on pixel values in image areas identified as being important by one or more saliency mapping algorithms. In one application to dynamic range adjustment, a saliency map is applied to create a weighed histogram and a transformation is determined from the weighted histogram. Artifacts typical of local adjustment schemes may be avoided. | 03-26-2015 |