http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Design and evaluation of a head-mounted display for immersive 3D teleoperation of field robots
Martins, Henrique,Oakley, Ian,Ventura, Rodrigo Cambridge University Press 2015 Robotica Vol.33 No.10
<B>SUMMARY</B><P>This paper describes and evaluates the use of a head-mounted display (HMD) for the teleoperation of a field robot. The HMD presents a pair of video streams to the operator (one to each eye) originating from a pair of stereo cameras located on the front of the robot, thus providing him/her with a sense of depth (stereopsis). A tracker on the HMD captures 3-DOF head orientation data which is then used for adjusting the camera orientation by moving the robot and/or the camera position accordingly, and rotating the displayed images to compensate for the operator's head rotation. This approach was implemented in a search and rescue robot (RAPOSA), and it was empirically validated in a series of short user studies. This evaluation involved four experiments covering two-dimensional perception, depth perception, scene perception, and performing a search and rescue task in a controlled scenario. The stereoscopic display and head tracking are shown to afford a number of performance benefits. However, one experiment also revealed that controlling robot orientation with yaw input from the head tracker negatively influenced task completion time. A possible explanation is a mismatch between the abilities of the robot and the human operator. This aside, the studies indicated that the use of an HMD to create a stereoscopic visualization of the camera feeds from a mobile robot enhanced the perception of cues in a static three-dimensional environment and also that such benefits transferred to simulated field scenarios in the form of enhanced task completion times.</P>
Using Light in for PIN Entry Authentications
안두리(Andrea Bianchi),이안오클리(Ian Oakley),권동수(Dong Soo Kwon) 한국HCI학회 2012 한국HCI학회 학술대회 Vol.2012 No.1
Performing sensitive authentications, such as ATM PIN entry, in public spaces is a commonplace activity that is inherently susceptible to security attacks based on observation in person or via cameras. This paper addresses this problem with a system which allows users to enter PINs on their mobile devices and then transmit them securely for authentication using modulated patterns of light shown on the screen, sensed by a receiver unit and initiated by a physical action (placing the device facedown on the receiver). The advantages include the use of standard mobile devices and low cost sensing hardware. Furthermore, no pre-pairing is required as physical proximity guarantees security.