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re: General security camera discussion (was "Unifi Protect security cameras")
Posted on 2/8/21 at 5:22 pm to Korkstand
Posted on 2/8/21 at 5:22 pm to Korkstand
quote:
Sound useful? Or better yet, does anyone know of such a tool/project that already exists?
Signs like it could be its own dedicated website. The best resource currently existing is ipcamtalk, but direct reviews with methodological comparisons are not really their forte.
As a jumping off point, one of the best ideas I’ve seen is here. I like the idea of direct comparison in harsh conditions where everything gets pushed to the point of failure. There is obviously room for improvement here- they don’t talk about motion detection. They don’t talk about nvr features. They don’t sample audio (1 or 2 way) or discuss lag on viewing.
Still, I think this would be a good “model” to start from where you’ll want to measure certain things (face detection, license detection, fine detail, field of view, etc) and attribute points for a real “objective” comparison.
1
Posted on 2/8/21 at 6:02 pm to Hopeful Doc
Oh I plan to build a life-size human cutout that rotates around a base at variable speeds, among other test subjects like plates, etc. 
I just need to take care to document every aspect of the setup as a parameter so that others can repeat and contribute.
There are some pretty neat tools available like the CCTV lens calculator and this mapper/simulator, but those just calculate pixel density and DORI distances based on specs. But like the ipcamtalk cliffs notes tell you right off top, "megapixel mania" is a common mistake, and the sensor/optics/firmware play a very significant role in image quality, especially when there is motion (the stuff we're actually interested in).
I'm imagining a tool where you can select 3 or 4 cameras and be presented with a grid with an array of cropped images which show the detail of a face/plate/whatever under several different controlled conditions (day&0/2/4/6/8mph, low-light&0/2/4/6/8mph, dark&0/2/4/6/8mph) and distances, with built-in IR vs IR flood, etc. Just so you can quickly glance and scroll to get an idea of which camera might be the best value for your application.
I just need to take care to document every aspect of the setup as a parameter so that others can repeat and contribute.
There are some pretty neat tools available like the CCTV lens calculator and this mapper/simulator, but those just calculate pixel density and DORI distances based on specs. But like the ipcamtalk cliffs notes tell you right off top, "megapixel mania" is a common mistake, and the sensor/optics/firmware play a very significant role in image quality, especially when there is motion (the stuff we're actually interested in).
I'm imagining a tool where you can select 3 or 4 cameras and be presented with a grid with an array of cropped images which show the detail of a face/plate/whatever under several different controlled conditions (day&0/2/4/6/8mph, low-light&0/2/4/6/8mph, dark&0/2/4/6/8mph) and distances, with built-in IR vs IR flood, etc. Just so you can quickly glance and scroll to get an idea of which camera might be the best value for your application.
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