Procedures for measuring 3-D surface area and surface temperature of livestock
Hugo FM Milan
Kristen M Perano
Kifle G Gebremedhin
10.6084/m9.figshare.5176879.v1
https://cbbiomet.figshare.com/articles/journal_contribution/Procedures_for_measuring_3-D_surface_area_and_surface_temperature_of_livestock/5176879
<p>Bio-energetic
models of livestock require geometrical properties (<i>e.g.</i>, surface area) of animals. Currently, the surface area of
animals is estimated from empirical equations based on body weight or assuming the
animal as cylinders or spheres. These approximations do not accurately characterize
the true geometry of the animal. Similarly, skin-surface temperature predictions
from bio-energetic models are validated by taking spot measurements, which neglects
the spatial variability of this parameter. In this study, an accurate approach of
measuring these parameters is proposed. Based on preliminary results (more data
analysis is ongoing), the advantages and disadvantages of various 3-D scanning
technologies (photogrammetry, Kinect V1, Kinect V2, Intel® RealSense™ SR300,
and Intel® RealSense™ R200) as well as two different procedures for obtaining 3-D
surface temperature (thermal projection and thermal photogrammetry) are
discussed. Kinect (V1 or V2) is recommended for 3-D scanning of livestock because
the sensors are cheap and easy to use. Sense from 3-D Systems (Intel®
RealSense™ SR300) does not support large scanning volumes but it is recommended
for scanning small animals (or parts of an animal) because it is handheld and
the software is easy to use. To scan large animals (<i>e.g.</i>, a whole cow) and for advanced users, Intel® RealSense™ R200
is suitable. For 3-D surface temperature, thermal photogrammetry is recommended
because it is less error prone than thermal projection. </p>
2017-08-08 14:37:35
3D scan
bio-energetics
cows
livestock
temperature
Environmental Management