Olof
n3wb
The Cliff Notes have been enormously valuable to me when starting out with ip camera's. And I still regularly go back to it.
There is however, imho, room for improvement in the Cliff Notes on the topic of camera height placement. And given the amount of times forum-questions are asked and answered on this subject I suspect others might find it also beneficial.
Current Cliff Notes on Camera Height placement:
Section 'Common mistakes': Mounted too high: Mount cameras < 8 feet high to get a good angle for potential identification.
Section on Dori: Mount the cameras <8 feet to ensure a good angle for identification purposes
Why above not good enough imho:
1. not enough distinction being made between one's goals (Detection, Observation, Recognition, Identification) and ideal camera height
2. the "<8 feet" norm is generally too high for Identification on people wearing caps or hoodies. An increasing problem with burglars and car thief's over here (Netherlands)
2.1 support 1: this Axis video Note the man with cap from 0:22 in the video
2.2 support 2: UK Police recommends eye-level placement
2.3 support 3: Axis recommends a camera-to-object angle of 10 degrees which is quite shallow. But even in their example the person is not wearing a cap or hoodie. See this Axis page
Suggested text addition
Where:
What (concept text-proposal):
Where: section DORI parameters
What: Add this link for a quick/basic intro to the DORI concept. For the complete noobs like me in the beginning
Cheers,
Maarten
There is however, imho, room for improvement in the Cliff Notes on the topic of camera height placement. And given the amount of times forum-questions are asked and answered on this subject I suspect others might find it also beneficial.
Current Cliff Notes on Camera Height placement:
Section 'Common mistakes': Mounted too high: Mount cameras < 8 feet high to get a good angle for potential identification.
Section on Dori: Mount the cameras <8 feet to ensure a good angle for identification purposes
Why above not good enough imho:
1. not enough distinction being made between one's goals (Detection, Observation, Recognition, Identification) and ideal camera height
2. the "<8 feet" norm is generally too high for Identification on people wearing caps or hoodies. An increasing problem with burglars and car thief's over here (Netherlands)
2.1 support 1: this Axis video Note the man with cap from 0:22 in the video
2.2 support 2: UK Police recommends eye-level placement
2.3 support 3: Axis recommends a camera-to-object angle of 10 degrees which is quite shallow. But even in their example the person is not wearing a cap or hoodie. See this Axis page
Suggested text addition
Where:
- section 'Camera Location Recommendations'
- create a new subsection called 'Placement Height'
What (concept text-proposal):
- For Detection and Observation situations (DOri): camera's can be mounted at any reasonable height (is this true?)
- For Recognition and 'normal' Identification situations (doRI): mount cameras < 8 feet high to get a good angle for Recognition and potential identification on people NOT wearing caps or hoodies
- For Identification on people who DO wear caps or hoodies: mount camera at eye-level (5-6 feet)
- link to this nice Axis video showing the difference between std height (7-8 feet) and eye-level placement
Where: section DORI parameters
What: Add this link for a quick/basic intro to the DORI concept. For the complete noobs like me in the beginning
Cheers,
Maarten
