US 12,450,923 B2
Sign visibility test system
Seung Jun Kim, Gwangju (KR); Gwang Bin Kim, Gwangju (KR); Eun Sol An, Gwangju (KR); Do Hyeon Yeo, Gwangju (KR); and Ji Eun Lee, Gwangju (KR)
Assigned to GWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGY, Gwangju (KR)
Filed by GWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGY, Gwangju (KR)
Filed on Dec. 19, 2022, as Appl. No. 18/083,637.
Claims priority of application No. 10-2021-0192356 (KR), filed on Dec. 30, 2021.
Prior Publication US 2023/0215193 A1, Jul. 6, 2023
Int. Cl. G06V 20/59 (2022.01); G06F 3/01 (2006.01)
CPC G06V 20/597 (2022.01) [G06F 3/013 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A sign visibility test system comprising:
a head-mounted display configured for providing a driver with a virtual driving environment by providing a virtual video including a road in which a sign that is a visibility test target is installed and a questionnaire about an awareness level of the sign at a moment when the driver passes the sign in the virtual driving environment and for receiving answers to the questionnaire from the driver;
a traveling simulator configured to be manipulated by the driver and to simulate a driver seat of a vehicle in the virtual driving environment;
a motion provision unit configured to generate 3-axis motion corresponding to the virtual video in order to simulate inertia and impact that the driver can feel;
a bio signal sensor configured for acquiring bio signal information and gaze information of the driver; and
a sensor data visualization panel configured for displaying the virtual driving environment, the bio signal information and the gaze information,
wherein awareness level information on the sign about which the driver answers the questionnaire is stored as annotation data in the bio signal information and the gaze information,
the bio signal information and the gaze information are temporally synchronized with the moment when the driver recognizes the sign,
the driver's awareness level of the sign is quantified in real time and classified into three defined levels including a first level when the driver does not perceive the sign, a second level when the driver does perceive but does not understand the sign, and a third level when the driver perceives and understands the sign, thereby enabling real-time visibility assessment of the sign based on the driver's classified awareness level.