Projector for active stereo depth sensors
AssigneeIntel Corporation
InventorsAnders Grunnet-Jepsen, Akihiro Takagi, John N. Sweetser, Paul Winer
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Abstract
Systems, devices, and techniques related to projecting dynamic feature patterns onto a scene for use in stereoscopic imaging are discussed. Such techniques may include implementing a dynamic transmissive element in an optical path between a projector and the scene to modify a static pattern emitted from the projector to illuminate the scene with a dynamic pattern.
Claims20
A stereoscopic imaging device comprising:
- a projector to project a pattern toward a scene;
- a lens moveably mounted in an optical path between the projector and the scene, wherein the lens comprises a wedge portion having a wedge angle and a planar portion or a second wedge portion, and wherein the lens being moveably mounted in the optical path comprises the wedge portion and the planar portion or the second wedge portion of the lens being moveable within the optical path;
- and
- a controller to provide a signal to move the wedge portion and the planar portion or the second wedge portion within the optical path at a rate synchronized to an image capture rate of the scene to provide only the wedge portion of the lens within the optical path during a first image capture and only the planar portion or the second wedge portion of the lens within the optical path during a second image capture.
At least one non-transitory machine readable medium comprising a plurality of instructions that, in response to being executed on a device, cause the device to perform stereoscopic imaging by:
- controlling an infrared (IR) projector to project a static IR pattern toward a scene;
- controlling a lens, the lens comprising a wedge portion having a wedge angle and a planar portion or a second wedge portion, moveably mounted in an IR path between the IR projector and the scene to move the wedge portion and the planar portion or the second wedge within the IR path, said controlling comprising providing a signal to move the wedge portion and the planar portion or the second wedge portion within the optical path at a rate synchronized to an image capture rate of the scene to provide only the wedge portion of the lens within the optical path during a first image capture and only the planar portion or the second wedge portion of the lens within the optical path during a second image capture;
- and
- capturing, via first and second image capture devices, image data corresponding to the scene as illuminated by the IR pattern during the first and second image captures.
A stereoscopic imaging device comprising:
- a projector to project a pattern toward a scene;
- a lens disc moveably mounted, substantially at a center of the lens disc, to an axis that is outside of an optical path between the projector and the scene, wherein the lens disc is moveable about the axis such that, at any position of the lens disc about the axis, part of the lens disc is within the optical path and another pat of the lens disc is outside the optical path, and wherein the lens disc comprises a wedge portion having a wedge angle;
- and
- a controller to provide a signal to move the lens disc within the optical path at a rate synchronized to an image capture rate of the scene to provide a first portion of the lens disc within the optical path during a first image capture and a second portion of the lens disc within the optical path during a second image capture.
Dependencies are inferred from the claim text.