Abstract: Processing image information associated with a 3D scene can involve obtaining image data associated with at least one layer of the 3D scene; determining at least one phase increment distribution associated with the at least one layer for modifying at the at least one layer an image size associated with the scene; and determining a propagation of an image wave front, corresponding to the at least one layer, to a result layer at a distance from the scene to form a propagated image wave front at the result layer representing a hologram of the scene, wherein determining the propagation includes applying the at least one phase increment distribution associated with the at least one layer to the image wave front at the at least one layer.

Abstract: A system and method for generating high resolution images using a plenoptic camera, is provided. In one embodiment, the comprises capturing a first set of images in a first unexcited state of operation by using a birefringent medium disposed between a main lens and an array of lenses having a plurality of apertures. Each pixel of the first set of images is then mapped to a first set of apertures. The first unexcited state is then caused to become a second excited state by applying a voltage across said birefringent medium. A second set of images are captured in the second excited state and a second set of pixels of the second image is mapped to a second set of apertures. A value is calculated for each first and second set of images and the value associated with said first set of images is subtracted from at least two times the value calculated from said second set of image.

Abstract: It is proposed an optical device for delivering a polychromatic image to an eye box being an area positioned in front of an eye of a user wearing said optical device. The optical device is remarkable in that it comprises: •a light-engine for delivering said polychromatic image, said light engine being able to generate n different monochromatic light image beams [C1, . . . , Ci, . . .

Abstract: There are several types of plenoptic devices having their proprietary file format. At present there is no standard supporting the acquisition and transmission of multidimensional information for an exhaustive over-view of the different parameters upon which a light-field depends. As such acquired light-field data for different cameras have a diversity of formats. The notion of pixel beam, which represents a volume occupied by a set of rays of light in an object space of an optical system of a camera is thus introduced. The method according to the invention enables to provide data representative of a collection of pixel beams describing a first optical system that is agnostic since these data are obtained by imaging the collection of pixel beams through a second optical system. Such data representative of a collection of pixel beams enable the generation of parametrized output images from which post-processing.

Abstract: A system and method for generating multiple images with rich color acquisition using a plenoptic camera having a main lens disposed in front of a micro array of lenses, a mosaic color filter array and an image sensor, characterized in that it comprises: capturing a first set of images using an ordinary state of an electrically controllable birefringent medium being disposed between said main lens and said micro array of lenses, said ordinary state providing an ordinary ray to each pixel; capturing a second set of images using an extraordinary state of said electrically controllable birefringent medium, said extraordinary state splitting the light from said main lens into an ordinary ray and a extraordinary ray respectively impinging on two adjacent pixels of different colors, said extraordinary ray being shifted by distance of one pixel on said image sensor; performing a weighted subtraction of information about said second set of images from information about said first set of images; and generating a final

Abstract: There are several types of plenoptic devices and camera arrays available on the market, and all these light field acquisition devices have their proprietary file format. However, there is no standard supporting the acquisition and transmission of multi-dimensional information. It is interesting to obtain information related to a correspondence between pixels of a sensor of said optical acquisition system and an object space of said optical acquisition system. Indeed, knowing which portion of the object space of an optical acquisition system a pixel belonging to the sensor of said optical acquisition system is sensing enables the improvement of signal processing operations. The notion of pixel beam, which represents a volume occupied by a set of rays of light in an object space of an optical system of a camera is thus introduce.

Abstract: A system and method for generating high resolution images using a plenoptic camera, is provided. In one embodiment, the comprises capturing a first set of images in a first unexcited state of operation by using a birefringent medium disposed between a main lens and an array of lenses having a plurality of apertures. Each pixel of the first set of images is then mapped to a first set of apertures. The first unexcited state is then caused to become a second excited state by applying a voltage across said birefringent medium. A second set of images are captured in the second excited state and a second set of pixels of the second image is mapped to a second set of apertures. A value is calculated for each first and second set of images and the value associated with said first set of images is subtracted from at least two times the value calculated from said second set of image.

Abstract: In one embodiment, it is proposed a method for encoding a light field content. The method is remarkable in that it comprises: —obtaining, for a set of light rays (401) associated with said light field content, four coordinates per light ray from a two planes parametrization (2000; 402, 403) of said light field content; —obtaining (2001), for each light ray from said set, two coordinates from said four coordinates, corresponding to a projection of said light rays from said set onto a plane (404, 405, P) perpendicular to two planes used in said two planes parametrization, defining points in a first 2D ray diagram (?(?1, ?2), ?(?1, ?2)); —applying (2002) a discrete Radon transform on said first 2D ray diagram (?(?1, ?2), ?(?1, ?2)) that delivers lines of interest in said first 2D ray diagram; —encoding (2003) said lines of interest into encoded lines of interest; and—storing (2004) said encoded lines of interest.

Abstract: A system and method for generating high resolution images using a plenoptic camera having a main lens in front of an array of microlenses and an image sensor, characterized in that it comprises: capturing a first set of images in a first unexcited state of operation by using a birefringent medium disposed between a said main lens and an said array of microlenses, said unexcited state of said birefringent medium providing an ordinary ray to each pixel; causing said first unexcited state to become a second excited state by applying a voltage across said birefringent medium; capturing a second set of images in said second excited state, said excited state of said birefringent medium splitting the light from said main lens into an ordinary ray and an extraordinary ray, said extraordinary ray being shifted by a distance of one half-pixel from the ordinary ray on said image sensor; subtracting pixel value associated with said first set of images from at least two times the pixel value associated with said second se

Abstract: The present disclosure concerns an image sensor comprising at least one sensing unit, said at least one sensing unit comprising means for converting light into a readable electric signal. The image sensor is remarkable in that said at least one sensing unit comprises light guiding means for guiding light in direction to said means for converting light into a readable electric signal, said light guiding means comprising: at least one layer of a dielectric material, having a first refractive index with a surface having at least one abrupt change of level forming a step, and an element having a second refractive index lower than said first refractive index, which is in contact with said step.

Abstract: A system and method for generating multiple images with rich color acquisition using a plenoptic camera having a main lens disposed in front of a micro array of lenses, a mosaic color filter array and an image sensor, characterized in that it comprises: capturing a first set of images using an ordinary state of an electrically controllable birefringent medium being disposed between said main lens and said micro array of lenses, said ordinary state providing an ordinary ray to each pixel; capturing a second set of images using an extraordinary state of said electrically controllable birefringent medium, said extraordinary state splitting the light from said main lens into an ordinary ray and a extraordinary ray respectively impinging on two adjacent pixels of different colors, said extraordinary ray being shifted by distance of one pixel on said image sensor; performing a weighted subtraction of information about said second set of images from information about said first set of images; and generating a final

Abstract: There are several types of plenoptic devices having their proprietary file format. At present there is no standard supporting the acquisition and transmission of multidimensional information for an exhaustive over-view of the different parameters upon which a light-field depends. As such acquired light-field data for different cameras have a diversity of formats. The notion of pixel beam, which represents a volume occupied by a set of rays of light in an object space of an optical system of a camera is thus introduced. The method according to the invention enables to provide data representative of a collection of pixel beams describing a first optical system that is agnostic since these data are obtained by imaging the collection of pixel beams through a second optical system. Such data representative of a collection of pixel beams enable the generation of parametrized output images from which post-processing.

Abstract: A system and method for generating high resolution images using a plenoptic camera having a main lens in front of an array of microlenses and an image sensor, characterized in that it comprises: capturing a first set of images in a first unexcited state of operation by using a birefringent medium disposed between a said main lens and an said array of microlenses, said unexcited state of said birefringent medium providing an ordinary ray to each pixel; causing said first unexcited state to become a second excited state by applying a voltage across said birefringent medium; capturing a second set of images in said second excited state, said excited state of said birefringent medium splitting the light from said main lens into an ordinary ray and an extraordinary ray, said extraordinary ray being shifted by a distance of one half-pixel from the ordinary ray on said image sensor; subtracting pixel value associated with said first set of images from at least two times the pixel value associated with said second se

Abstract: There are several types of plenoptic devices and camera arrays available on the market, and all these light field acquisition devices have their proprietary file format. However, there is no standard supporting the acquisition and transmission of multi-dimensional information. It is interesting to obtain information related to a correspondence between pixels of a sensor of said optical acquisition system and an object space of said optical acquisition system. Indeed, knowing which portion of the object space of an optical acquisition system a pixel belonging to the sensor of said optical acquisition system is sensing enables the improvement of signal processing operations. The notion of pixel beam, which represents a volume occupied by a set of rays of light in an object space of an optical system of a camera along with a compact format for storing such information is thus introduced.

Abstract: A method for obtaining light field data of a scene from a sequence of images of the scene, each image being captured at a different viewpoint using a non-light-field image capture device is described. The method includes obtaining a reference image of the scene at a reference viewpoint, an interest area of the scene being included in the reference image and a reference position (x0,y0) being associated with the interest area in a reference local coordinate system of the capture device.

Abstract: In one embodiment, it is proposed a method for encoding a light field content. The method is remarkable in that it comprises: —obtaining, for a set of light rays (401) associated with said light field content, four coordinates per light ray from a two planes parametrization (2000; 402, 403) of said light field content; —obtaining (2001), for each light ray from said set, two coordinates from said four coordinates, corresponding to a projection of said light rays from said set onto a plane (404, 405, P) perpendicular to two planes used in said two planes parametrization, defining points in a first 2D ray diagram (?(?1, ?2), ?(?1, ?2)); —applying (2002) a discrete Radon transform on said first 2D ray diagram (?(?1, ?2), ?(?1, ?2)) that delivers lines of interest in said first 2D ray diagram; —encoding (2003) said lines of interest into encoded lines of interest; and —storing (2004) said encoded lines of interest.

Abstract: There are several types of plenoptic devices and camera arrays available on the market, and all these light field acquisition devices have their proprietary file format. However, there is no standard supporting the acquisition and transmission of multi-dimensional information. It is interesting to obtain information related to a correspondence between pixels of a sensor of said optical acquisition system and an object space of said optical acquisition system. Indeed, knowing which portion of the object space of an optical acquisition system a pixel belonging to the sensor of said optical acquisition system is sensing enables the improvement of signal processing operations. The notion of pixel beam, which represents a volume occupied by a set of rays of light in an object space of an optical system of a camera is thus introduce.

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: There are several types of plenoptic devices and camera arrays available on the market, and all these light field acquisition devices have their proprietary file format. However, there is no standard supporting the acquisition and transmission of multi-dimensional information. It is interesting to obtain information related to a correspondence between pixels of a sensor of said optical acquisition system and an object space of said optical acquisition system. Indeed, knowing which portion of the object space of an optical acquisition system a pixel belonging to the sensor of said optical acquisition system is sensing enables the improvement of signal processing operations. The notion of pixel beam, which represents a volume occupied by a set of rays of light in an object space of an optical system of a camera along with a compact format for storing such information is thus introduce.

Abstract: There are several types of plenoptic devices and camera arrays available on the market, and all these light field acquisition devices have their proprietary file format. However, there is no standard supporting the acquisition and transmission of multi-dimensional information. It is interesting to obtain information related to a correspondence between pixels of a sensor of said optical acquisition system and an object space of said optical acquisition system. Indeed, knowing which portion of the object space of an optical acquisition system a pixel belonging to the sensor of said optical acquisition system is sensing enables the improvement of signal processing operations. The notion of pixel beam, which represents a volume occupied by a set of rays of light in an object space of an optical system of a camera along with a compact format for storing such information is thus introduce.