Detail
Článek
Článek online
FT
Medvik - BMČ
  • Je něco špatně v tomto záznamu ?

Testing photogrammetry-based techniques for three-dimensional surface documentation in forensic pathology

P. Urbanová, P. Hejna, M. Jurda,

. 2015 ; 250 (-) : 77-86. [pub] 20150317

Jazyk angličtina Země Irsko

Typ dokumentu časopisecké články, práce podpořená grantem

Perzistentní odkaz   https://www.medvik.cz/link/bmc16010392
E-zdroje Online Plný text

NLK ProQuest Central od 1997-02-07 do Před 2 měsíci
Nursing & Allied Health Database (ProQuest) od 1997-02-07 do Před 2 měsíci
Health & Medicine (ProQuest) od 1997-02-07 do Před 2 měsíci

Three-dimensional surface technologies particularly close range photogrammetry and optical surface scanning have recently advanced into affordable, flexible and accurate techniques. Forensic postmortem investigation as performed on a daily basis, however, has not yet fully benefited from their potentials. In the present paper, we tested two approaches to 3D external body documentation - digital camera-based photogrammetry combined with commercial Agisoft PhotoScan(®) software and stereophotogrammetry-based Vectra H1(®), a portable handheld surface scanner. In order to conduct the study three human subjects were selected, a living person, a 25-year-old female, and two forensic cases admitted for postmortem examination at the Department of Forensic Medicine, Hradec Králové, Czech Republic (both 63-year-old males), one dead to traumatic, self-inflicted, injuries (suicide by hanging), the other diagnosed with the heart failure. All three cases were photographed in 360° manner with a Nikon 7000 digital camera and simultaneously documented with the handheld scanner. In addition to having recorded the pre-autopsy phase of the forensic cases, both techniques were employed in various stages of autopsy. The sets of collected digital images (approximately 100 per case) were further processed to generate point clouds and 3D meshes. Final 3D models (a pair per individual) were counted for numbers of points and polygons, then assessed visually and compared quantitatively using ICP alignment algorithm and a cloud point comparison technique based on closest point to point distances. Both techniques were proven to be easy to handle and equally laborious. While collecting the images at autopsy took around 20min, the post-processing was much more time-demanding and required up to 10h of computation time. Moreover, for the full-body scanning the post-processing of the handheld scanner required rather time-consuming manual image alignment. In all instances the applied approaches produced high-resolution photorealistic, real sized or easy to calibrate 3D surface models. Both methods equally failed when the scanned body surface was covered with body hair or reflective moist areas. Still, it can be concluded that single camera close range photogrammetry and optical surface scanning using Vectra H1 scanner represent relatively low-cost solutions which were shown to be beneficial for postmortem body documentation in forensic pathology.

Citace poskytuje Crossref.org

000      
00000naa a2200000 a 4500
001      
bmc16010392
003      
CZ-PrNML
005      
20160413115101.0
007      
ta
008      
160408s2015 ie f 000 0|engg|
009      
AR
024    7_
$a 10.1016/j.forsciint.2015.03.005 $2 doi
024    7_
$a 10.1016/j.forsciint.2015.03.005 $2 doi
035    __
$a (PubMed)25818581
040    __
$a ABA008 $b cze $d ABA008 $e AACR2
041    0_
$a eng
044    __
$a ie
100    1_
$a Urbanová, Petra $u Laboratory of Morphology and Forensic Anthropology, Department of Anthropology, Faculty of Science, Masaryk University, Kotlarska 2, 611 37 Brno, Czech Republic. Electronic address: urbanova@sci.muni.cz.
245    10
$a Testing photogrammetry-based techniques for three-dimensional surface documentation in forensic pathology / $c P. Urbanová, P. Hejna, M. Jurda,
520    9_
$a Three-dimensional surface technologies particularly close range photogrammetry and optical surface scanning have recently advanced into affordable, flexible and accurate techniques. Forensic postmortem investigation as performed on a daily basis, however, has not yet fully benefited from their potentials. In the present paper, we tested two approaches to 3D external body documentation - digital camera-based photogrammetry combined with commercial Agisoft PhotoScan(®) software and stereophotogrammetry-based Vectra H1(®), a portable handheld surface scanner. In order to conduct the study three human subjects were selected, a living person, a 25-year-old female, and two forensic cases admitted for postmortem examination at the Department of Forensic Medicine, Hradec Králové, Czech Republic (both 63-year-old males), one dead to traumatic, self-inflicted, injuries (suicide by hanging), the other diagnosed with the heart failure. All three cases were photographed in 360° manner with a Nikon 7000 digital camera and simultaneously documented with the handheld scanner. In addition to having recorded the pre-autopsy phase of the forensic cases, both techniques were employed in various stages of autopsy. The sets of collected digital images (approximately 100 per case) were further processed to generate point clouds and 3D meshes. Final 3D models (a pair per individual) were counted for numbers of points and polygons, then assessed visually and compared quantitatively using ICP alignment algorithm and a cloud point comparison technique based on closest point to point distances. Both techniques were proven to be easy to handle and equally laborious. While collecting the images at autopsy took around 20min, the post-processing was much more time-demanding and required up to 10h of computation time. Moreover, for the full-body scanning the post-processing of the handheld scanner required rather time-consuming manual image alignment. In all instances the applied approaches produced high-resolution photorealistic, real sized or easy to calibrate 3D surface models. Both methods equally failed when the scanned body surface was covered with body hair or reflective moist areas. Still, it can be concluded that single camera close range photogrammetry and optical surface scanning using Vectra H1 scanner represent relatively low-cost solutions which were shown to be beneficial for postmortem body documentation in forensic pathology.
650    _2
$a dospělí $7 D000328
650    _2
$a algoritmy $7 D000465
650    12
$a počítačová simulace $7 D003198
650    _2
$a ženské pohlaví $7 D005260
650    _2
$a soudní patologie $x metody $7 D049429
650    _2
$a lidé $7 D006801
650    _2
$a zobrazování trojrozměrné $x metody $7 D021621
650    _2
$a mužské pohlaví $7 D008297
650    _2
$a lidé středního věku $7 D008875
650    12
$a fotogrammetrie $7 D010780
650    _2
$a software $7 D012984
655    _2
$a časopisecké články $7 D016428
655    _2
$a práce podpořená grantem $7 D013485
700    1_
$a Hejna, Petr $u Department of Forensic Medicine, Faculty of Medicine, Charles University in Prague and University Hospital Hradec Králové, Sokolská 581, 500 05 Hradec Králové, Czech Republic. Electronic address: HejnaP@lfhk.cuni.cz.
700    1_
$a Jurda, Mikoláš $u Laboratory of Morphology and Forensic Anthropology, Department of Anthropology, Faculty of Science, Masaryk University, Kotlarska 2, 611 37 Brno, Czech Republic. Electronic address: mikolasju@gmail.com.
773    0_
$w MED00001844 $t Forensic science international $x 1872-6283 $g Roč. 250, č. - (2015), s. 77-86
856    41
$u https://pubmed.ncbi.nlm.nih.gov/25818581 $y Pubmed
910    __
$a ABA008 $b sig $c sign $y a $z 0
990    __
$a 20160408 $b ABA008
991    __
$a 20160413115145 $b ABA008
999    __
$a ok $b bmc $g 1113821 $s 934760
BAS    __
$a 3
BAS    __
$a PreBMC
BMC    __
$a 2015 $b 250 $c - $d 77-86 $e 20150317 $i 1872-6283 $m Forensic science international $n Forensic Sci Int $x MED00001844
LZP    __
$a Pubmed-20160408

Najít záznam

Citační ukazatele

Nahrávání dat ...

Možnosti archivace

Nahrávání dat ...