Abstract: The invention is related to a method of determining a disparity information associated with at least a block of pixel of a first view of a scene, a matrix of views comprising the first view and a plurality of second views of the scene. The first and second views are obtained by demultiplexing a raw image of the scene acquired with a plenoptic camera but are not demosaiced. The method comprises comparing a first color pattern associated with the first block of the first view with at least one second color pattern associated with at least one second block of at least one of the second views belonging to the row or the column comprising the first view in the matrix; selecting at least one second block if the associated second color pattern corresponds at least partially to the first color pattern; and determining the disparity information associated with the first block by using the selected at least one second block and the first block.

Abstract: An optical see-through glass type display device comprises: an optical unit having a front correcting surface and a rear correcting surface; an image projector projecting a virtual image; and an image sensor for capturing an ambient scene image. The optical unit is configured to guide light of the ambient scene image coming through the front correcting surface to the image sensor and to guide light of the virtual image so that the light of the virtual image outgoes through the rear correcting surface. A first optical compensation element is located between the optical unit and the image sensor and a second optical compensation element is located between the image projector and the optical unit. The device further comprises a processing module configured to analyze the ambient scene image captured by the image sensor.

Abstract: A method of performing depth estimation, the method comprising: estimating, at a higher spatial resolution of images, a global disparity map based on disparity between corresponding pixels of a stereo disparity map obtained from images forming a stereo image set associated with a passive depth estimation technique and an active depth map associated with an active depth estimation technique, wherein the disparity is estimated within a restricted range determined based on a disparity previously estimated between a stereo disparity map and an active depth map corresponding to a lower spatial resolution of the said images and map.

Abstract: An optical see-through glass type display device (100) comprises: an image projector (140) projecting a virtual image; a first optical element (130) configured to guide light of the virtual image; and a second optical element (120) having a first reflection surface (122a) for reflecting back light coming through the front surface of the second optical element (120) and a second reflection surface (124a) for retro-reflecting light coming through the rear surface of the second optical element (120). The second optical element (120) is switchable between a first state in which the reflection on the first and second reflection surfaces (122a, 124a) is enabled and a second state in which the reflection on the first and second reflection surfaces (122a, 124a) is disabled.

Abstract: In one embodiment, it is proposed a method for processing at least one disparity map associated to at least one left view and one right view of stereovision images. Such method is remarkable in that it comprises determining at least one modified disparity map that comprises, for a given pixel or group of pixels, a modified disparity value determined in function of disparity values of the at least one disparity map associated to pixels that belong to a neighborhood of the given pixel or group of pixels, said disparity values being weighted in function of a value obtained from the at least one disparity map and at least one other disparity map.

Abstract: The invention consists in a method of and a device for temporal filtering of disparity maps of n different frames, each map indicating the disparity of pixels of 3D images comprising the steps of marking the stationary pixels and the non stationary pixels and implementing temporal filter for stationary pixels, detecting limitations for temporal filtering corresponding to a variation of moving pixels above a determined threshold value and automatically de-activating the temporal filters as response to the detected limitations for temporal filtering.

Abstract: The invention relates to three dimensional video imaging, in which at least a left view and a right view of a moving scene are produced and a map of disparities is produced for all pixels of the successive images of a video sequence.

Abstract: Device comprising: an optical system itself comprising a light sensor with a plurality of pixels and a lens able to image the elements of the scene on one of the pixels of said light sensor, means to adjust the focus of the optical system onto any one of the elements of said scene that are able to adjust said focus by fixing on the maximum of light streams coming from this element and captured by one of the pixels of said bit mapped light sensor, and means suitable for deducing from the adjustment of said focus, the depth of said element.

Abstract: A method for illuminating the surface of an object by using a source beam is provided. The source beam is partitioned into as many illumination sub-beams as there are surface elements to be illuminated, and their aperture is modulated as a function of the predetermined luminous intensity to be assigned to the surface element. Each surface element is illuminated with the aid of one of said illumination sub-beams. Used for illuminating the imagers of projection devices, this method makes it possible to add a second modulation stage allowing the display contrast of the images to be improved.

Abstract: The multi-image capture system comprises an imaging lens, a beamsplitter directing a first portion of light on an array of micro-imaging elements and a first photodetector array divided into a plurality of macropixels providing a set of depth images, and another portion of light on a second photodetector array 6 providing a main image with a resolution being higher than the resolution of each basic depth image. According to the invention, the resolution of the depth images is increased by using the image data of the main image.

Abstract: The invention relates to a color display device with backlighting unit using organic light-emitting diodes and to a method of implementation. The color display device comprises, from rear to front towards an observer, a multicolor backlighting unit using organic light-emitting diodes and an electro-optical array for switching of the backlighting by pixels, the backlighting unit being a surface comprising a periodic pattern of a group of at least three adjacent illuminating lines of different base colors that are parallel to each other.

Abstract: The multi-image capture system comprises an imaging lens, a beamsplitter directing a first portion of light on an array of micro-imaging elements and a first photodetector array divided into a plurality of macropixels providing a set of depth images, and another portion of light on a second photodetector array 6 providing a main image with a resolution being higher than the resolution of each basic depth image. According to the invention, the resolution of the depth images is increased by using the image data of the main image.

Abstract: The invention relates to a projection system comprising: a polychromatic light source and at least one imaging assembly illuminated by an associated polychromatic illumination beam, and comprising: two separate colored wheels, respectively called first and second colored wheel; and three separate imagers, respectively called first, second and third imagers. At least one part of the polychromatic beam, called first source beam, illuminating the first colored wheel which separates said source beam into a first monochromatic beam and into a two-tone beam, said first monochromatic beam illuminating the first imager and said two-tone beam being transmitted toward the second colored wheel. The second colored wheel being illuminated by said two-tone beam and separating said two-tone beam into second and third monochromatic beams, respectively illuminating said second and third imagers respectively.

Abstract: The invention relates to an organic light-emitting diode comprising on a substrate, from the rear face to the front face, at least one rear electrode of a first type surmounted by an organic light-emitting layer, itself surmounted by at least one front electrode of a second type, the organic light-emitting layer producing light when holes and electrons are injected into it by a current flowing through the electrodes, the types corresponding to an anode and a cathode, at least one of the electrodes being substantially transparent for the produced light in order to allow it to escape through one of the faces of said diode, referred to as the exit face.

Abstract: An illumination system is provided for combining two or more light sources. A plurality of light sources radiate random polarization light. A plurality of collecting light pipes corresponds to the plurality of light sources. Each collecting light pipe has an entrance end disposed towards the respective light source. The collecting light pipes are laterally offset and overlapping opposite their respective entrance ends. A combining light pipe is disposed perpendicular to the collecting light pipes. A polarizing beam splitter and a mirror are sequentially arranged in each collecting light pipe essentially opposite the entrance end directing a first polarization light and a second polarization light, respectively upwards towards the combining light pipe. The combining light pipe has an entrance end overlying the polarizing beam splitter and mirror of each collecting light pipe to collect and combine the light from each polarizing beam splitter and mirror.

Abstract: Method for illuminating the surface of an object by using a source beam, in which: said source beam is partitioned into as many illumination sub-beams as there are surface elements to be illuminated, their aperture being modulated as a function of the predetermined luminous intensity to be assigned to said surface element, each surface element is illuminated with the aid of one of said illumination sub-beams. Used for illuminating the imagers of projection devices, this method makes it possible to add a second modulation stage allowing the display contrast of the images to be improved.

Abstract: The invention relates to an organic light-emitting diode comprising on a substrate, from the rear face to the front face, at least one so-called rear electrode of a first type surmounted by an organic light-emitting layer, itself surmounted by at least one so-called front electrode of a second type, the organic light-emitting layer producing light when holes and electrons are injected into it by a current flowing through the electrodes, the types corresponding to an anode and a cathode, at least one of the electrodes being substantially transparent for the produced light in order to allow it to escape through one of the faces of said diode, referred to as the exit face.

Abstract: A projection system including a first imager that is an organic light emitting diode (OLED) imager configured to modulate a light band on a pixel-by-pixel basis proportional to gray scale values provided for each pixel of the image to provide a first output matrix and a second imager positioned and configured to receive the first output matrix of modulated pixels of light from the first imager on a pixel-by-pixel basis proportional to a second gray scale value provided for each pixel of the image is disclosed.

Abstract: A light projection system projects an image comprising a matrix of light pixels having modulated luminance. The projection system includes a first imager configured to modulate a light band on a pixel-by-pixel basis proportional to gray scale values provided for each pixel of the image to provide a first output matrix. A second imager is positioned and configured to receive the first output matrix of modulated pixels of light and modulate the individual modulated pixels of light from said first imager on a pixel-by-pixel basis proportional to a second gray scale value provided for each pixel of the image.

Abstract: The invention relates to a colour display device with backlighting unit using organic light-emitting diodes and to a method of implementation. The colour display device comprises, from rear to front towards an observer, a multicolour backlighting unit using organic light-emitting diodes and an electro-optical array for switching of the backlighting by pixels, the backlighting unit being a surface comprising a periodic pattern of a group of at least three adjacent illuminating lines of different base colours that are parallel to each other.