Embedded system, fast structured light based 3D camera system and method for obtaining 3D images using the same

Patent metadata

Field	Value
Publication number	US-10200679-B2
Application number	US-201615180024-A
Country	US
Kind code	B2
Filing date	Jun 11, 2016
Priority date	Jun 12, 2015
Publication date	Feb 5, 2019
Grant date	Feb 5, 2019

Abstract

Disclosed are an embedded system, a fast 3D camera system based on structured light, and a method for acquiring 3D images using the system. The embedded system includes a pattern generation module for generating the pattern in real time and a camera trigger module for converting a camera synchronization signal into a trigger signal and transmitting the signal to a camera. A transform module for transforming the pattern into a video signal and a communication module for receiving a command for projecting patterns and capturing images may be further included. The fast 3D camera system based on structured light includes an embedded system for generating a pattern in real time upon receiving a command for projecting patterns and capturing images, a projection device for projecting the pattern, and a camera for capturing the image of an object onto which the pattern is projected.

First claim

What we claim:

1. A structured light 3D imaging system, comprising:
an embedded system to calculate first pattern data for a first pattern in real time in response to a command received from a computing device and generate a video signal from the first pattern data, the computing device being separate from the embedded system;
a projection device to receive the video signal from the embedded system and project the first pattern onto an object in accordance with the video signal; and
a camera to capture an image of the object with the first pattern projected thereon by the projection device.

2. The 3D imaging system of claim 1 , wherein the first pattern data is not stored in a memory of the embedded system.

3. The 3D imaging system of claim 2 , wherein the imaging system includes the computing device and the computing device comprises:
a user interface through which a user may cause the computing device to transmit the command to the embedded system and through which the user may monitor generation of a 3D image of the object by the computing device; and
a communication interface to transmit the command to the embedded system and to receive the image of the object captured by the camera.

4. The 3D imaging system of claim 1 , wherein the embedded system calculates second pattern data for a second pattern while the projection device projects the first pattern onto the object.

5. The 3D imaging system of claim 1 , wherein the embedded system further generates a trigger signal and transmits the trigger signal to the camera to synchronize the projection of the first pattern onto the object by the projection device with the capture of the image of the object with the first pattern projected thereon by the camera.

6. The 3D imaging system of claim 1 , wherein the embedded system includes a codec to calculate the first pattern data.

7. The 3D imaging system of claim 1 , wherein the embedded system does not include an operating system.

8. The 3D imaging system of claim 1 , wherein the embedded system comprises at least one of a field programmable gate array, a digital signal processor, and a micro controller.

Assignees

• Research & Business Found Sungkyunkwan Univ

Inventors

• Lee Suk-Han
• Muhammad Atif
• Han Kuk-Jin

Classifications

• G01B11/2513

  with several lines being projected in more than one direction, e.g. grids, patterns · CPC title

• G01S17/46

  Indirect determination of position data · CPC title

• H04N13/296 Primary

  Synchronisation thereof; Control thereof · CPC title

• H04N13/204

  using stereoscopic image cameras (stereoscopic photography G03B35/00) · CPC title

• G01S17/89 Primary

  for mapping or imaging · CPC title