A technology to detect the place where corpses are buried with LIDAR appears and it is expected to be utilized for investigation of murder case
" LIDAR " which can perceive surrounding situations with high precision by laser is used as an important technology which holds the key in the realization of automatic driving technology. Using that LIDAR, a method of discovering corpses buried under the ground was developed.
A novel application of terrestrial LIDAR to characterize elevation change at human grave surfaces in support of narrowing down possible unmarked grave locations - ScienceDirect
https://www.sciencedirect.com/science/article/pii/S0379073818302901
Finding Murder Victims in Unmarked Graves Can Be Made Easier with Lasers, Study Shows - Motherboard
https://motherboard.vice.com/en_us/article/ev85wa/finding-murder-victims-in-unmarked-graves-can-be-made-easier-with-lasers-study-shows
It was the research team of Dr. KACorcoran of Oak Ridge National Laboratories etc. who developed technology to detect corpses using LIDAR. A research group at Oak Ridge National Laboratory and University of Tennessee has for some time filled human corpses at the University of Tennessee and made a facility "Body Farm" to study how the corpses rot and decompose, and continues observation I have done it. You can check Body Farm in the following movie.
Tennessee's Farm of Rotting Corpses - Motherboard - VICE - YouTube
Dr. Corcoran and colleagues used six Body Farms to cooperate with the experiments to fill six bodies offered by drilling and digging holes with scoops and picks as well as the actual murderer fills the corpse in the ground, I hung it to cover the hole and hide the corpse in the ground so as not to know from the outside. In order to faithfully reproduce the actual situation, the corpses are buried in the ground with a part of the clothes dressed, handcuffed or tied with strings. In addition, I did not fill the corpse of a hole drilling as a control group, as well as three kinds of patterns, a place filled with one corpse, a place filled with three corpses, and a place filled with 66 dead bodies The place was also prepared.
In the experiment, we measured the surface of the ground with LIDAR immediately after filling the corpse in the ground and examined the change. LIDAR detects a slight subduction in this ground, as the ground surface sinks slightly together with corruption and decomposition of the corpse, even if the place where the corpse is buried is cleanly grounded so that it does not know from the outside The main idea of the study was to be able to detect that the corpse was buried by doing.
As a result of the experiment, LIDAR could not confirm the subduction almost without holes in the corpse and succeeded in detecting only the place where the corpse was buried. We have succeeded in distinguishing the presence or absence of corpses by investigating the change of the surface of the earth at a level of LIDAR with high resolution that can not be detected by human eyes.
It is expected that LIDAR can be used for investigation methods by using LIDAR in addition to traditional human and investigation dogs to detect dead bodies that were killed and buried in the ground.
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