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AssigneeInterDigital VC Holdings, Inc.
InventorsLaurent Blonde, Mozhdeh Seifi, Guillaume Boisson, Paul Kerbiriou, Valter Drazic
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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.
An apparatus for encoding an image captured by an optical acquisition system, said apparatus comprising a processor configured to compute for at least one pixel of a sensor of said optical acquisition system parameters defining a volume in an object space of the optical acquisition system occupied by a set of rays of light passing through a pupil of said optical acquisition system and a conjugate of said at least one pixel in the object space of the optical acquisition system in a direction normal to a surface of the pupil, said volume occupied by said set of rays of light being called a pixel beam, wherein the pixel beam is represented by a hyperboloid of one sheet in the object space of the optical acquisition system, and the parameters comprise at least a first set of parameters representing an axis of the hyperboloid called a chief ray and a second set of parameters representing a family of generating rays enabling the generation of a surface of the hyperboloid by rotating around the chief ray.
A method for encoding an image captured by an optical acquisition system, said method comprising computing for at least one pixel of a sensor of said optical acquisition system parameters defining a volume in an object space of the optical acquisition system occupied by a set of rays of light passing through a pupil of said optical acquisition system and a conjugate of said at least one pixel in the object space of the optical acquisition system in a direction normal to a surface of the pupil, said volume occupied by said set of rays of light being called a pixel beam, wherein the pixel beam is represented by a hyperboloid of one sheet in the object space of the optical acquisition system, and the parameters comprise at least a first set of parameters representing an axis of the hyperboloid called a chief ray and a second set of parameters representing a family of generating rays enabling the generation of a surface of the hyperboloid by rotating around the chief ray.
An apparatus for processing an image captured by an optical acquisition system, said apparatus comprising a processor configured to process said image based on parameters associated to at least one pixel of a sensor of the optical acquisition system, said parameters defining a volume in an object space of the optical acquisition system occupied by a set of rays of light passing through a pupil of said optical acquisition system and a conjugate of said at least one pixel in the object space of the optical acquisition system in a direction normal to a surface of the pupil, said volume occupied by said set of rays of light being called a pixel beam, wherein the pixel beam is represented by a hyperboloid of one sheet in the object space of the optical acquisition system, and the parameters comprise at least a first set of parameters representing an axis of the hyperboloid called a chief ray and a second set of parameters representing a family of generating rays enabling the generation of a surface of the hyperboloid by rotating around the chief ray.
A method for processing an image captured by an optical acquisition system, said method comprising processing said image based on parameters associated to at least one pixel of a sensor of the optical acquisition system, said parameters defining a volume in an object space of the optical acquisition system occupied by a set of rays of light passing through a pupil of said optical acquisition system and a conjugate of said at least one pixel in the object space of the optical acquisition system in a direction normal to a surface of the pupil, said volume occupied by said set of rays of light being called a pixel beam, wherein the pixel beam is represented by a hyperboloid of one sheet in the object space of the optical acquisition system, and the parameters comprise at least a first set of parameters representing an axis of the hyperboloid called a chief ray and a second set of parameters representing a family of generating rays enabling the generation of a surface of the hyperboloid by rotating around the chief ray.
A non-transitory computer readable medium storing executable program instructions to cause a computer executing the instructions to perform a method comprising computing for at least one pixel of a sensor of an optical acquisition system parameters defining a volume in an object space of the optical acquisition system occupied by a set of rays of light passing through a pupil of said optical acquisition system and a conjugate of said at least one pixel in the object space of the optical acquisition system in a direction normal to a surface of the pupil, said volume occupied by said set of rays of light being called a pixel beam, wherein the pixel beam is represented by a hyperboloid of one sheet in the object space of the optical acquisition system, and the parameters comprise at least a first set of parameters representing an axis of the hyperboloid called a chief ray and a second set of parameters representing a family of generating rays enabling the generation of a surface of the hyperboloid by rotating around the chief ray.
Dependencies are inferred from the claim text.