US 11,741,607 B2
Electronic device, method, and computer program for calculating bleeding site and trajectory of bloodstain scattered by impact
Nam Kyu Park, Bucheon-si (KR); Jae Mo Goh, Wonju-si (KR); Jin Pyo Kim, Daejeon (KR); Young Il Seo, Wonju-si (KR); Eun Ah Joo, Yongin-si (KR); Je Hyun Lee, Wonju-si (KR); Sang Yoon Lee, Wonju-si (KR); and Kyung Mi Kim, Namyangju-si (KR)
Assigned to REPUBLIC OF KOREA (NATIONAL FORENSIC SERVICE DIRECTOR MINISTRY OF THE INTERIOR AND SAFETY), Wonju-si (KR)
Filed by REPUBLIC OF KOREA (NATIONAL FORENSIC SERVICE DIRECTOR MINISTRY OF THE INTERIOR AND SAFETY), Wonju-si (KR)
Filed on Nov. 16, 2020, as Appl. No. 17/99,023.
Claims priority of application No. 10-2020-0111020 (KR), filed on Sep. 1, 2020.
Prior Publication US 2022/0067937 A1, Mar. 3, 2022
Int. Cl. G06T 7/00 (2017.01); G06T 15/00 (2011.01); G06T 15/10 (2011.01)
CPC G06T 7/0014 (2013.01) [G06T 7/97 (2017.01); G06T 15/005 (2013.01); G06T 15/10 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A method of calculating a bleeding site and a trajectory of a bloodstain scattered by impact, the method comprising:
obtaining, by an electronic device calculating the bleeding site and the trajectory of the bloodstain scattered by impact, captured image information including a captured image and a three-dimensional (3D) coordinate value of each of two or more bloodstains scattered by impact;
analyzing the obtained captured image information, by the electronic device, and calculating a collision angle and measuring a direction angle of each of the two or more bloodstains scattered by impact;
calculating, by the electronic device, the 3D coordinate value of the bleeding site based on the assumption that drops of blood fly in a straight line;
calculating, by the electronic device, a trajectory of a drop of blood under an influence of gravity and air resistance based on the calculated 3D coordinate value of the bleeding site; and
displaying and outputting, by the electronic device, a linear trajectory of the drop of blood and a parabolic trajectory considering gravity and air resistance of the drop of blood on a 3D space.