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-2016366397-A1
Application number	US-201615180024-A
Country	US
Kind code	A1
Filing date	Jun 11, 2016
Priority date	Jun 12, 2015
Publication date	Dec 15, 2016
Grant date	—

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 . An apparatus for use with a computing device, a camera, and a projection device to reconstruct a 3D image of an object, the apparatus being separate from the computing device and comprising:
a pattern generation module to generate a first pattern; and a camera trigger module to generate a trigger signal and transmit the trigger signal to the camera to synchronize a projection of the first pattern onto the object by the projection device with an image capture operation of the camera.

2 . The apparatus of claim 1 , wherein the pattern generation module generates the first pattern in real time in response to a command from the computing device.

3 . The apparatus of claim 1 , wherein the pattern generation module generates a second pattern while the projection device projects the first pattern onto the object.

4 . The apparatus of claim 2 , further comprising
a communication module for receiving the command from the computing device.

5 . The apparatus of claim 1 , further comprising
a transform module for transforming the first pattern into the video signal for use by the projection device to project the first pattern onto the object.

6 . The apparatus of claim 1 , wherein the first pattern is not stored in a memory of the apparatus.

7 . The apparatus of claim 3 , wherein neither the first pattern nor the second pattern is stored in a memory of the apparatus.

8 . A 3D imaging system, comprising:
an embedded system to generate a first pattern in real time in response to a command received from a computing device, the computing device being separate from the embedded system; a projection device to project the first pattern onto an object; and a camera to capture an image of the object with the first pattern projected thereon.

9 . The 3D imaging system of claim 8 , wherein the first pattern is not stored in a memory of the embedded system.

10 . The 3D imaging system of claim 9 , wherein 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.

11 . The 3D imaging system of claim 8 , wherein wherein the embedded system generates a second pattern while the projection device projects the first pattern onto the object.

12 . The 3D imaging system of claim 8 , wherein the embedded system generates a trigger signal and transmit 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.

13 . A method for generating a 3D image of an object the method comprising:
generating, by an embedded system, a pattern in real time in response to a command received from a computing device; generating, by the embedded system, a camera synchronization signal; converting, by the embedded system, the camera synchronization signal into a trigger signal; and transmitting, by the embedded system, the trigger signal to a camera.

14 . The method of claim 13 , further comprising:
transmitting, by the computing system, the command to the embedded system via any one of a wired link and a wireless link.

15 . The method of claim 13 , wherein the pattern is not stored in a memory of the embedded system.

16 . The method of claim 15 , further comprising:
transforming, by the embedded system, the pattern into a video signal; and transmitting the video signal to a projection device to cause the projection device to project the pattern onto the object.

17 . The method of claim 16 , further comprising:
capturing, by the camera, an image of the object having the pattern projected thereon.

18 . The method of claim 17 , further comprising:
generating, by the computing device, the 3D image of the object from the captured image.

19 . The method of claim 16 , wherein the method is performed a plurality of times according to an initial setup process.

Assignees

• Univ Sungkyunkwan Res & Bus

Inventors

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

Classifications

• H04N5/23216

  Electricity · mapped topic

• H04N13/0203

  Electricity · mapped topic

• G01S17/89 Primary

  for mapping or imaging · CPC title

• H04N13/0296 Primary

  Electricity · mapped topic

• G01S17/46

  Indirect determination of position data · CPC title