摘要:
The invention relates to a method for reducing moire patterns on an autostereoscopic display, which display comprises an array of pixels, each having at least one sub- pixel corresponding to a main color, lined with a view altering layer, such as a lenticular lens stack or parallax barrier, and wherein the display further comprises an eye tracking system for determining the position of the eyes of a viewer relative to the display, which method comprises the steps of: - moire pattern detection by repeating for each main color the steps of : + activating the sub-pixels of all pixels corresponding to the single main color; + obtaining moire pattern data by observing the display from a plurality of viewing positions; + determining from the obtained moire pattern data the frequency, phase, direction and amplitude of the moire pattern for each of the viewing positions and storing the determined values; - controlling the pixels of the autostereoscopic display to display 3D images, wherein the controlling comprises at least the steps of: + determining the viewing position of the eyes of a viewer using the eye tracking system; + rendering 3D images from image data, while correcting the 3D images by superimposing a compensation pattern for each main color, which pattern is generated based on the stored values and the determined viewing position to reduce the moire pattern for said viewing position.
摘要:
The invention relates to a method for reducing crosstalk on an autostereoscopic display, wherein the display comprises an array of pixels lined with a view altering layer, such as a lenticular lens stack or parallax barrier, which display further comprises an eye tracking system for determining the position of the eyes of a viewer relative to the display, which method comprises the steps of: - defining a common nonlinear physical model for a view altering layer portion corresponding to a pixel or group of pixels, which nonlinear physical model has at least one variable for the position of the respective pixel or group of pixels relative to the display, a variable for the viewing position of the eyes of a viewer relative to the display and parameters related to the variables; - calibrating the autostereoscopic display by repeating for all pixels or group of pixels of the display, the steps of : + obtaining calibration data by observing the visibility of a pixel or group of pixels from at least two viewing positions; + fitting the calibration data on the nonlinear physical model for the respective view altering layer portion to obtain the parameters related to the variables; and + storing the parameters for the respective view altering layer portion; - controlling the pixels of the autostereoscopic display to display 3D images, wherein the controlling comprises at least the steps of: + determining the viewing position of the eyes of a viewer using the eye tracking system; + rendering 3D images from image data taking into account the position of the pixels or group of pixels relative to the viewing position, while correcting the 3D images per pixel or group of pixels using the common nonlinear physical model and the stored parameters for the view altering layer portion corresponding to the pixel of group of pixels.
摘要:
Methods and apparatus for aligning components of camera assemblies of one or more camera pairs, e.g., a stereoscopic camera pairs, are described. A camera calibration tool referred to as a camera bra is used. Each dome of the camera bra includes a test pattern, e.g., grid of points, with the domes being aligned and spaced apart by a predetermined amount. The bra is placed over the cameras of a camera pair, the grids are detected and displayed. The camera component positions are adjusted until the displayed images show the grids as being properly aligned. Because the grids on the calibration tool are properly aligned as a result of the manufacturing of the calibration tool, when the images are brought into alignment the cameras will be properly spaced and aligned at which point the calibration tool can be removed and the stereoscopic camera pair used to capture images of a scene.
摘要:
Examples are disclosed herein that relate to calibrating a user's eye for a stereoscopic display. One example provides, on a head-mounted display device including a see-through display, a method of calibrating a stereoscopic display for a user's eyes, the method including for a first eye, receiving an indication of alignment of a user-controlled object with a first eye reference object viewable via the head-mounted display device from a perspective of the first eye,, determining a first ray intersecting the user-controlled object and the first eye reference object from the perspective of the first eye, and determining a position of the first eye based on the first ray. The method further includes repeating such steps for a second eye, determining a position of the second eye based on a second ray, and calibrating the stereoscopic display based on the position of the first eye and the position of the second eye.
摘要:
The present principles provide a method, apparatus and system for locally correcting angular errors due to displacement when placing micro-lenses/barriers on a display by shifting the views at a sub-pixel level using higher resolution panels. In such panels, instead of having one sub-pixel to generate one view, there are more than one sub-pixels used to generate one view. The sub-pixels are grouped differently depending on their position on the screen to compensate for bad positioning of lenses (barriers) on the glass of a display.
摘要:
Three-dimensional [3D] display device (100) for processing a depth-related signal (122), the 3D display device comprising: -an input (120) for obtaining the depth-related signal, the depth-related signal comprising depth-related values distributed within a signal depth-related range (310), the depth-related values enabling 3D rendering of a two-dimensional [2D] image signal (124) on the 3D display device; -a processor (140) for mapping the depth-related values to a display depth-related range (320) of the 3D display device to obtain adjusted depth-related values for use in the 3D rendering; and -the processor (140) being arranged for, as part of said mapping the depth-related values, adjusting a distribution of the depth-related values within the display depth-related range (320) based on limitation data (126), the limitation data being indicative of a perceptual quality provided to a viewer as a function of a degree of depth established by the 3D display device.
摘要:
Настоящее изобретение относится к способу автоматической коррекции видео-проекции с помощью обратного преобразования с помощью сервера, который осуществляет выдачу видео сигналов на устройстве проектирования или видеоэкраны, позволяющий проигрывать многомерные изображения без искажения последних.
摘要:
The invention relates to a method for providing a shared view of images on a display (14) to at least two viewers (USER-1, USER-2,... USER-n), comprising the steps of tracking positions of the at least two viewers (USER-1, USER-2,... USER-n) relative to the display (14), selecting images to be displayed for each of the at least two viewers (USER-1, USER-2,... USER-n) based on the tracked positions, and displaying the selected images on the display (14) sequentially in time to the at least two viewers (USER-1, USER-2,... USER-n) such that images selected for different viewers are displayed at different times, wherein it is provided that each viewer (USER-1, USER-2,... USER-n) can only view the displayed images selected for the respective viewer (USER-1, USER-2,... USER-n). In this way, a possibility is provided for each individual viewer to watch a 3D artificial scenario from his preferred individual position on the same display together with other viewers such that shared viewing of a 3D scenario becomes possible.