A physical model of Time-of-Flight 3D imaging systems, including suppression of ambient light (bibtex)
by Mirko Schmidt, Bernd Jähne
Abstract:
We have developed a physical model of continuous-wave Time-of-Flight cameras, which focuses on a realistic reproduction of the sensor data. The derived simulation gives the ability to simulate data acquired by a ToF system with low computational effort. The model is able to use an arbitrary optical excitation and to simulate the sampling of a target response by a two-tap sensor, which can use any switching function. Nonlinear photo response and pixel saturation, as well as spatial variations from pixel to pixel like photo response non-uniformity (PRNU) and dark signal non-uniformity (DSNU) can be modeled. Also the influence of interfering background light and on-sensor suppression of ambient light can be simulated. The model was verified by analyzing two scenarios: The cameras response to an increasing, homogeneous irradiation as well as the systematic phase deviation caused by higher harmonics of the optical excitation. In both scenarios the model gave a precise reproduction of the observed data.
Reference:
A physical model of Time-of-Flight 3D imaging systems, including suppression of ambient light (Mirko Schmidt, Bernd Jähne), In 3rd Workshop on Dynamic 3-D Imaging (R. Koch, A. Kolb, eds.), Springer, volume 5742, 2009.
Bibtex Entry:
@InProceedings{schmidt2009,
  Title                    = {A physical model of {T}ime-of-{F}light {3D} imaging systems, including suppression of ambient light},
  Author                   = {Mirko Schmidt and Bernd Jähne},
  Booktitle                = {3rd Workshop on Dynamic 3-D Imaging},
  Year                     = {2009},
  Editor                   = {R. Koch and A. Kolb},
  Pages                    = {1--15},
  Publisher                = {Springer},
  Series                   = {Lecture Notes in Computer Science},
  Volume                   = {5742},

  Abstract                 = {We have developed a physical model of continuous-wave Time-of-Flight cameras, which focuses on a realistic reproduction of the sensor data. The derived simulation gives the ability to simulate data acquired by a ToF system with low computational effort. The model is able to use an arbitrary optical excitation and to simulate the sampling of a target response by a two-tap sensor, which can use any switching function. Nonlinear photo response and pixel saturation, as well as spatial variations from pixel to pixel like photo response non-uniformity (PRNU) and dark signal non-uniformity (DSNU) can be modeled. Also the influence of interfering background light and on-sensor suppression of ambient light can be simulated. The model was verified by analyzing two scenarios: The cameras response to an increasing, homogeneous irradiation as well as the systematic phase deviation caused by higher harmonics of the optical excitation. In both scenarios the model gave a precise reproduction of the observed data.},
  Access                   = {1},
  Doi                      = {10.1007/978-3-642-03778-8_1},
  File                     = {http:http\://hci.iwr.uni-heidelberg.de/publications/dip/2009/Dyn3D_2009_LNCS5742_001Schmidt.pdf:PDF},
  Groupid                  = {dip},
  Owner                    = {bjaehne},
  Peer                     = {yes},
  Timestamp                = {2009.06.17}
}