Abstract:
In one embodiment, it is proposed a method for adapting a number of views delivered by an auto-stereoscopic display device. The method is executed by an electronic device, and it comprises: - determining a number of views based on a list of number of views supported by said auto-stereoscopic display device and at least an information indicative of a computing power of a device needed to deliver content for each view; - obtaining a correspondence map between sub-pixels of said auto-stereoscopic display device and said number of views; and - providing content to said sub-pixels of said auto-stereoscopic display device according to said correspondence map.
Abstract:
A method and an apparatus for displaying pictures with an improved grey scale portrayal shall be provided. Therefore, the quantization steps of the digitized signals for a plasma panel display have to be reduced. To achieve such reduction of quantization steps of the light output of a cell of the plasma display panel, the energy of the addressing impulse for addressing those luminous elements which have to be activated for a complete frame period or a part of it is used. Consequently, the light output of the luminous elements can be controlled by the usual sustain impulses and additionally by the addressing impulses thus reducing the quantization steps.
Abstract:
The present invention provides a method of processing a source left view and a source right view of a 3D image comprising the steps of: identifying at least one ghosted region or ghosting region in the left view and/or in the right view; processing the identified regions in order to create a binocular suppression effect for this identified regions then providing a new 3D image formed by the processed left and/or right views.
Abstract:
An addressing method for sample and hold displays suitable for multi-scan applications (supporting several frame rates) shall be provided. Thus, there is disclosed a method for displaying a picture on a display screen including the steps of providing an input signal including a sequence of plural frames, each corresponding to a single picture, temporally dividing each frame having a frame duration into sub-fields and controlling a display element of the display screen on the basis of the sub-fields. The number and/or duration of sub-fields of each frame is automatically adapted to the frame duration of the frame. Furthermore, the amplitude of a sub-field controlling signal corresponding to the last subfield of each frame may be automatically adapted to the frame duration of the frame. Such display methods provide for a high grayscale quality and linearity even if the frame rate is not stable nor well-defined.
Abstract:
The invention relates to a method of filtering a map of disparity associated with one of the views of a stereoscopic image comprising the steps of identifying the pixels (x n ) with which is associated an erroneous disparity value (d(x n )) by comparison with the disparity values of the neighbouring pixels (x n-1 ,x n+1 ) and of correcting the disparity values of the identified pixels.
Abstract:
The invention relates to a method for driving a display panel comprising a matrix array of cells which could be 'ON' or 'OFF', wherein, to display an image, a video frame is divided into N sub-fields, each sub-field comprising at least an addressing period and a sustaining period, the addressing period being constituted either by a selective writing period or a selective erasing period and the duration of the sustaining period corresponding to the weight associated with the said sub-field. In the invention, the sub-fields successively alternate between a sub-field with a selective writing period (SF1, SF3, SF5, ...., SF11, SF13) and a sub-field with an erasing period (SF2, SF4, SF6, ...., SF12, SF14). This invention is applicable, for example, to Plasma Display Panels.
Abstract:
The invention relates to a method for processing video pictures for display on a display device having a plurality of luminous elements corresponding to the pixels of a picture wherein the time of a video frame or field is divided into a plurality of N sub-fields (SF) during which the luminous elements can be activated for light emission in small pulses corresponding to a sub-field code word of n bits used for coding the p possible video levels lighting a pixel, comprising the steps of : determining if pictures are static pictures or moving pictures, in case of static pictures, processing video pictures using a first sub-field encoding method adapted to pictures when no motion is detected, and in case of moving pictures, processing video pictures using a second encoding method reducing dynamic false contour effect adapted to pictures when motion is detected. The invention applies to plasma display panels.
Abstract:
The invention relates to a method for processing video pictures for display on a display device having a plurality of luminous elements corresponding to the pixels of a picture wherein the time of a video frame or field is divided into a plurality of N sub-fields (SF) during which the luminous elements can be activated for light emission in small pulses corresponding to a sub-field code word of n bits used for coding the p possible video levels lighting a pixel, comprising the steps of : determining if pictures are static pictures or moving pictures, in case of static pictures, processing video pictures using a first sub-field encoding method adapted to pictures when no motion is detected, and in case of moving pictures, processing video pictures using a second encoding method reducing dynamic false contour effect adapted to pictures when motion is detected. The invention applies to plasma display panels.
Abstract:
The luminous elements of the three colours red, green and blue of a plasma video display have different time responses. Therefore, a coloured trail/edge appears behind and in front of the edges of a moving object. In order to reduce the disturbing character of such coloured trails/edges, correcting the video data for blue and red phosphor elements to compensate for the different time responses discolor them. Then only a discolored trail/edge appears which is less disturbing.
Abstract:
This method comprises: - first tone mapping an original version (VO) of the image and using the first tone-mapped version (V1) to display the image on the first display device, - selecting a portion of said image, - second tone mapping the original version (VO) of said selected portion and using said second tone-mapped version (V2, V'2) to display the selected portion of image on the second display device, wherein the second tone mapping is different and complementary with the first tone mapping.