There is a problem of smearing in the flying camera. It is necessary to correctly select a high frame rate camera, a high-frequency high-brightness light source, and an exposure time setting.
Reference formula: exposure time * object speed ≤ movement direction accuracy requirement
For example:
The current exposure time of the camera is 2000us, the moving speed of the conveyor belt is 100mm/s, the resolution of the camera used is 2448*2048, the field of view is 300mm*250mm, the moving direction of the object is the horizontal direction, and the accuracy requires that the smear should not exceed 1/ 2 pixels. Can the scene at this time meet the requirements of flying shooting?
Exposure time*object speed=2000*100/1000000=0.2mm
Horizontal direction pixel accuracy requirement is =300/2448*1/2=0.061mm
Since 0.2mm>0.061mm, it cannot meet the accuracy requirements of this flying shooting scene.
According to the above calculation, there are the following solutions:
(1) Increase the brightness of the light source and reduce the exposure time of the camera
Exposure time ≤ 0.061/100 = 610us
As long as the exposure time is set less than 610us, the smear will not exceed 1/2 pixel.
(2) Reduce the speed of the conveyor belt
Object movement speed ≤ 0.061mm/2000us = 30.5mm/s
As long as the speed of the conveyor belt is reduced to 30.5mm/s, the smear generated by the exposure time of 2000us can be guaranteed not to exceed 1/2 pixel.
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