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Modified time of flight camera 3D-images improving method

D. FALIE1, L. C. CIOBOTARU2,*

Affiliation

  1. Politehnica University of Bucharest, Romania
  2. National Institute of Lasers, Plasma and Radiation Physics, Magurele, Romania

Abstract

The 3D shape image of high contrast objects obtained with the Time of Flight cameras presents significant distortions. These distortions are caused either by the scattered light inside the camera body or by the indirect (diffuse) light illuminating the objects in the scene. The modified Time of Flight (ToF) camera corrects the 3D image by illuminating the scene with two consecutive light intensities. In one frame the scene is normally illuminated and in the consecutive frame an additional spotlight is added. A correction vector is computed using these two images. The improved 3D image is computed by subtracting this vector from the original vector image which leads to a significant improvement of 3D images. Thus, the modified ToF camera becomes easily to calibrate and its use could be extended in many industrial applications..

Keywords

3D image, Time of flight camera, Image corrections.

Citation

D. FALIE, L. C. CIOBOTARU, Modified time of flight camera 3D-images improving method, Optoelectronics and Advanced Materials - Rapid Communications, 4, 2, February 2010, pp.136-140 (2010).

Submitted at: July 28, 2009

Accepted at: Feb. 2, 2010