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Standard Test Method for Determining Visual Acuity and Field of View of On-Board Video Systems for Teleoperation of Robots for Urban Search and Rescue Applications
STANDARD published on 1.2.2008
Designation standards: ASTM E2566-08
Note: WITHDRAWN
Publication date standards: 1.2.2008
SKU: NS-45617
The number of pages: 6
Approximate weight : 18 g (0.04 lbs)
Country: American technical standard
Category: Technical standards ASTM
Keywords:
field of view, remote operation, robots, teleoperation, urban search and rescue, video systems, visual acuity, ICS Number Code 13.200 (Accident and disaster control)
Significance and Use |
Responder-defined requirements for these test methods are documented in a preliminary document entitled “Statement of Requirements for Urban Search and Rescue Robot Performance Standards.” Field of View is important in terms of the ability of the operator to drive the robot. Looking at the world through a zoom lens is like “looking through a soda straw.” Looking with a 30 or 40° field of view lens is like “driving with blinders on.” On the other hand, using a very wide field of view lens (with a field of view of 120 or 150°), the operator’s use of optic flow to cue depth perception is severely degraded and navigating in a tight environment is very difficult. Multiple cameras are recommended, with one providing a very wide field of view or all together providing a very wide field of view. Far Vision Visual Acuity is important for both unmanned air vehicles (UAVs) and ground vehicles for wide area survey. Zoom is required for ground vehicles for wide area survey. Near Vision Visual Acuity is important for ground vehicles for wide area survey in examining objects at close range and also for small robots which operate in constrained spaces. Testing in the dark is important for small robots since they must sometimes operate in spaces with no ambient lighting. |
1. Scope |
1.1 This test method covers the measurement of several key parameters of video systems for remote operations. It is initially intended for applications of robots for Urban Search and Rescue but is sufficiently general to be used for marine or other remote platforms. Those parameters are (1) field of view of the camera system, (2) visual acuity at far distances with both ambient lighting and lighting on-board the robot, (3) visual acuity at near distances, again in both light and dark environments, and (4), if available, visual acuity in both light and dark environments with zoom lens capability. 1.2 These tests measure only end-to-end capability, that is, they determine the resolution of the images on the display screen at the operator control unit since that is the important issue for the user. 1.3 This test method is intended to be used for writing procurement specifications and for acceptance testing for robots for urban search and rescue applications. 1.4 This test method will use the Snellen fraction to report visual acuity; readers may wish to convert to decimal notation to improve intuitive understanding if they are more familiar with that notation. Distances will be given in metres with English units in parentheses following. 1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. |
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