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AssigneeThomson Licensing
InventorsLaurent BLONDE, Valter DRAZIC, Mozhdeh SEIFI
Estimating the term…
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.
A computer implemented method for generating a set of data representative of a volume, in an object space of an optical acquisition system, occupied by a set of rays of light passing through a pupil of said optical acquisition system and a conjugate of at least one pixel of a sensor of said optical acquisition system said volume occupied by said set of rays of light being called a pixel beam, comprising:
The method according to any of the preceding claims wherein computing the first, respectively the second, rotation angle consists in:
The method according to any of the preceding claims wherein the second and the fourth generating rays are sorted, prior to the generation of the set of data representative of the pixel beam, so that the first and the second rotation angles are arranged in increasing order.
The method according to any of the preceding claims wherein the computed distance between one of the second or the fourth generating ray and the revolution axis of the hyperboloid is the shortest distance between one of the second or the fourth generating ray and the revolution axis of the hyperboloid.
An apparatus for generating a set of data representative of a volume, in an object space of an optical acquisition system, occupied by a set of rays of light passing through a pupil of said optical acquisition system and a conjugate of at least one pixel of a sensor of said optical acquisition system said volume occupied by said set of rays of light being called a pixel beam, said apparatus comprising a processor configured to:
A method for rendering a light-field content comprising:
A device for rendering a light-field content, comprising a processor configured to:
A signal representative of a light-field content comprising a set of data representative of a volume, in an object space of an optical acquisition system, occupied by a set of rays of light passing through a pupil of said optical acquisition system and a conjugate of at least one pixel of a sensor of said optical acquisition system said volume occupied by said set of rays of light being called a pixel beam, the set of data representative of the pixel beam comprising:
A data package for data representative of a volume, in an object space of an optical acquisition system, occupied by a set of rays of light passing through a pupil of said optical acquisition system and a conjugate of at least one pixel of a sensor of said optical acquisition system said volume occupied by said set of rays of light being called a pixel beam, comprising:
Dependencies are inferred from the claim text.