Structured light 3D scanner with refractive non-absorbing pattern forming element
First Claim
1. A 3D scanning apparatus comprisingan imaging cameraa fixed pattern projector, comprising two or more independently switchable light sources and one or more transparent pattern forming element.a controlling circuitry configured to switch between the light sources sequentially in synchronization with sequential acquisition of image frames.a processing circuitry, configured to calculate a 3D scan of the scene from one or more images acquired under illumination of appropriate patterns.
0 Assignments
0 Petitions
Accused Products
Abstract
A structured light 3D scanner consisting of a pattern projector; a digital imaging camera; and a controlling and processing circuitry is disclosed. Several novel variants of pattern projector are claimed. One embodiment comprises one or more transparent refractive pattern forming element, and two or more independently switchable light sources. Another embodiment comprises an array of light emitting diodes (LEDs), grown on the same semiconductor substrate, and an optical lens projecting the image formed by the said diode array.
Sequential acquisition of video frames with synchronous switching between the light sources in the pattern projector produces a sequence of images obtained under different illumination patterns. Processing these images produces a sequence of 3D scans of the scene.
34 Citations
20 Claims
-
1. A 3D scanning apparatus comprising
an imaging camera a fixed pattern projector, comprising two or more independently switchable light sources and one or more transparent pattern forming element. a controlling circuitry configured to switch between the light sources sequentially in synchronization with sequential acquisition of image frames. a processing circuitry, configured to calculate a 3D scan of the scene from one or more images acquired under illumination of appropriate patterns.
-
13. An apparatus comprising:
-
An array of surface emitting laser diodes or light emitting diodes (LEDs) grown on the same substrate. A control circuitry, wired to obtain an external control signal and power supply, and configured to set individual power level of the said LEDs in accordance to obtained control signal. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
-
Specification