Abstract:
An apparatus for generating an image signal for a display (103) comprises a receiver (105) which receives a video signal comprising three-dimensional data for a sequence of images. An image generator (107) generates display images for the sequence of images based on the three dimensional data and a rendering viewpoint. A shot transition detector (111) detects shot transitions in the sequence of images and a viewpoint controller (113) changes the rendering viewpoint in synchronization with the shot transition. A signal generator (109) generates the image signal to comprise the display images. The apparatus may further track viewer movements and adapt the rendering accordingly. In addition the system may bias the viewpoint towards a nominal viewpoint. The viewpoint changes due to tracking may be non-synchronous whereas the viewpoint changes due to bias may be synchronous with shot transitions.
Abstract:
The invention provides a panel comprising a first light emitting area (1) for providing light of a first color and a second light emitting area (2) for providing light of a second color different from the first color, the first and second light emitting areas being separated from each other by a first spacing (3) along a first spacing axis (5) perpendicular to a normal of the panel, wherein the first spacing (3) is smaller than 5 micrometer. Preferably The Width (4) of the at least one of the light emitting areas is also smaller than 5 micrometer. As these spacings and/or dimensions approach the wavelength of light emitted by the light emitting areas, the boundaries between these arreas become blurred or even the areas become indistinguishable from each other due to mixing. A Panel of the invention can be advantageously used in lighting and or display devices, in particular those that magnify the light emitting areas towards their users, such as autostereoscopic displays having lenticular lens arrangments.
Abstract:
The invention provides a panel comprising a first light emitting area (1) for providing light of a first color and a second light emitting area (2) for providing light of a second color different from the first color, the first and second light emitting areas being separated from each other by a first spacing (3) along a first spacing axis (5) perpendicular to a normal of the panel, wherein the first spacing (3) is smaller than 5 micrometer. Preferably The Width (4) of the at least one of the light emitting areas is also smaller than 5 micrometer. As these spacings and/or dimensions approach the wavelength of light emitted by the light emitting areas, the boundaries between these arreas become blurred or even the areas become indistinguishable from each other due to mixing. A Panel of the invention can be advantageously used in lighting and or display devices, in particular those that magnify the light emitting areas towards their users, such as autostereoscopic displays having lenticular lens arrangments.
Abstract:
The invention provides a autostereoscopic display device with a particular design of lenticular lens array (lens pitch and slant angle) to optimize the quality of the views provided to the user, when a multi -primary pixel layout is used, with at least four sub-pixels of at least three different colors. The slant angle and lens pitch is related to the pixel pitch (in the row and column directions) as well as the number of different color sub-pixels.
Abstract:
An autostereoscopic display device comprises a display arrangement such as an emissive display arrangement or an reflective dispplay arrangement, with an array of spaced pixels. A light guiding arrangement has an array of light guide columns, with one column over each display pixel or over a group (such as a column) of pixels. The light guide columns comprise aside wall which tapers outwardly to define a funnel shape with the pixel at the smaller base of the funnel. The funnel provides collimation to reduce cross talk in the display, which is particularly problematic for 3D autostereoscopic displays.
Abstract:
An autostereoscopic display device has display elements, each of which has an output light intensity distribution which has at least two non-zero light intensity levels, comprising a first light intensity at the centre of the display element area and a second lower light intensity at a periphery of the display element area. This means the light intensity drops more gradually at the pixel edges, so that the abrupt pixel edges are less visible despite the magnification provided by a lens arrangement of the autostereoscopic display device.
Abstract:
An autostereoscopic display device uses a display arrangement such as an emissive display arrangement or a reflective display arrangement and an autostereoscopic lens arrangement. A light controlling layer is provided between the display arrangement and the lens arrangement, with a refractive index lower than the surrounding materials. This reduces waveguiding in the lens arrangement by increasing the total internal reflection for shallow angles (near the plane of the display) before the light enters the lens arrangement.
Abstract:
An autostereoscopic display device uses an electroluminescent display.A set of pixels is provided beneath lenticular lenses, with a plurality of pixels across the lens width direction. The pixels across the lens width direction are arranged with at least two different heights over the substrate. This enables the pixels to define a non-planar array, and they can follow the area to which light is focused by the lenticular lenses.
Abstract:
An autostereoscopic display device in which the centroids of the display pixels define a grid of points in rows and columns, wherein the rows and columns are non- orthogonal. This means that a standard lenticular design can be used, and the pixel layout can be selected to optimise the optical performance depending on the sub-pixel layout.
Abstract:
A method of extracting scrolling text from a sequence of moving images includes obtaining video input data representative of a sequence of image frames(8-10) representing the sequence of moving images.Atleast one region(11,12) containing text within the images of the sequence is detected.For each of at least one of the at least one detected region a displacement of the region(11) fromimage to image is estimated, the images are registered in accordance with the estimated displacement,such that the region(11) is generallystatic from one registered image to the next, and at least parts of image frames representing multiple registered images are caused to be used as input in a method of segmentingtext from background,based on multiple images so as to generate an image of the text filtered from these.