Camera requirements for video analytics - KiwiVision™ 4.1 GA

KiwiVision™ Video Analytics Guide 4.1 GA

series
KiwiVision™ 4.1 GA
revised_modified
2019-07-10

Video analytics can be used with optical or thermal cameras, and camera requirements vary depending on the type of video analytics you want to perform.

Camera configuration for intrusion detection analytics

The optimal distance between a camera and object or person depends on the camera and lens.

Refer to the values listed in the following table as guidelines:

Function Requirement
Minimum object size for optical cameras Height or width of an object should be greater than 20 pixels
Minimum object size for thermal cameras
  • For images with minimal disturbances, such as camera noise: 3 x 3 pixels
  • For normal cases: 6 x 6 pixels
Minimum resolution (depends on object size and distance) CIF (352 x 288 pixels)
Minimum frame rate 12 fps
Optimal distance (depends on the camera and lens)
  • VGA: 5 - 35 m, 5 - 60 m (thermal)
  • HD: 5 - 50 m (optical)
Maximum distance (depends on the scene, camera, and lens)
  • VGA: 3 - 65 m, 3 - 120 m (thermal)
  • HD: 3 - 90 m (optical)

Camera configuration for object detection analytics

The recommended object size varies depending on the lighting conditions.

Refer to the values listed in the following table as guidelines:

Function Requirement
Minimum object size
  • Constant conditions (for example, in an elevator): 5 x 5 pixels
  • Indoor scenario: Height or width of an object should be greater than 20 pixels
  • Outdoor scenario: Height or width of an object should be greater than 50 pixels
Minimum resolution (depends on object size and distance) CIF (352 x 288 pixels)
Minimum frame rate 1 fps