Requirements to video parameters while working with detection tools

For video analytics to work correctly, the following requirements must be met:

1. Camera requirements:
   1. Resolution:
      1. at least 640x480 pixels for smart video detection tools.
      2. at leasr 320x240 pixels for  other video detection tools.
   2. Framerate:
      1. at least 6 frames per second for smart video detection tools.
      2. at least 1 frame per second for other video detection tools.
   1. Video analytics works with both black-and-white and color images.
   2. Camera shaking must not cause image shifting of more than 1% of the frame size.
2. Lighting requirements:
   
   1. Moderate lighting. Lighting that is too little (night) or too much (bright sunlight) may impact the quality of video analytics.
   2. No major fluctuations in lighting levels.
3. Scene and camera angle requirements:
   
   1. Moving objects must be visually separable from each other in the video.
   2. The background must be primarily static and not undergo sudden changes.
   3. Minimal obscuration of moving objects by static objects (columns, trees, etc.). 
   4. Reflective surfaces and harsh shadows from moving objects can affect the quality of analytics.
   5.  Long single-color objects may not be tracked properly.
4. Object requirements:
   1. An object must be visible on the image.
   2. There is no noise on the video image and there are no artifacts caused by the compression algorithm.
      1. The width and height of objects in the video should not be less than 1% of the frame size (at resolutions not less than 1920x1080 pixels) or 15 pixels (at lower resolutions).
      2. The width and height of objects in the video should not be more than 75% of the frame size.
   3. It is recommended that the linear measurements of objects in the frame do not exceed 75% of the frame size. 
   4. The speed of objects in the frame must be at least 1 pixel per second.

   5. The object is to be visible at not less than 8 frames.

   6. Within two adjacent frames the object cannot move in the movement direction for the distance that is longer than its size.

   7. Quantity of simultaneously tracked objects on a frame – not more than 25.