Please send me an e-mail, and I will send you my phone number. I am more than happy to discuss or remote desktop, etc. I also have a camera here that you can look at and see my settings.
To use face detection, 1) Enable face detection in event menu. 2) Configure the detection area. Either use "non-detection" (masking area), and don't draw a box/box off any area to ignore, or select "detection area" and draw one or more boxes where it should look for faces.
3) Adjust the sensitivity.
I also recommend turn on the "detection result overlay" when configuring. When the camera detects a face, it will put a blue frame around the face.
4) Schedule. Make sure activation time is set to "always", or enter a specific schedule.
The trouble people run in to is getting the areas confused. The default is non-detection (mask) with no box defined - meaning the whole screen is detectable. If you do draw a box, it is now not detecting there, unless you flip the mode to detection area.
I hope that helps.
As for the iris issue, can you post or send me what the exposure menu is set to, a well as the image preset option. Also, what firmware is the camera at?
I of course recommend upgrading the camera to the latest firmware as well.
National Training Manager
Samsung Techwin America
I do not know at what resolution the FD is analyzed at. Your math makes sense, but i don't have any further info beyond that right now.
I will see if I can find out.
Also, one point to update is that different models may perform differently. I was referring to the WiseNetIII series, which ranges from 1.3 Mp to 3Mp. Some of the older models I believe used a minimum number of pixel of 40x40.
Just an update to my post. After speaking with Aaron via email and viewing his info above, it seems the "angle of the face" to the camera is barely outside the working envelope of the camera feature for my application. As you can see from the picture below, when I look towards the camera - thus giving a better view of my face - the Facial Detection works (and it works every time). The blue box is the camera's "Detecion Result Overlay" - not something I placed on the picture. Unfortunately, when I turn my head towards the car/street, it's just enough to sneak by without detection.
In sum, even thought the feature doesn't work great in my application because of the camera angle, it does work great as long as you have a decent view of a face. In fact, I used the camera settings to actually send me a SMS Text when it detected a face. How? simple. Tell the camera to "send an email" upon detection. I have AT&T for cell service, so in the camera email settings I entered the following: email@example.com. This way, I get a text notification instead of an email whenever the event occurs. Other carriers are similar - just do a quick Google Search and you'll find the correct way to "email your SMS" service. I don't receive an MMS text (including the picture of the event that you would otherwise see in a normal email notification). However, I do get a text with the subject line of my choosing along with the date/time/camera IP address of the event. I do this because I set a different tone when I receive a text, and most importantly, I receive the text faster than I do normal email...typically within 15 seconds of the event. As Aaron stated above, you can set time restraints on the notifications so you only get them when you want them.
This is my way of using the available camera technology to create a "poor man's alarm system" without extra cabling and alarm bells. I'm literally within a nose of it working flawlessly - UGH!
Face detection is mainly used indoor when your camera is very horizontal because you don't have a heigth angle (low ceiling). Most of the time analytic requires a minimum of 25/30° Tilt to work (typical people or car tracking engines)
With Face detect you can detect with 5 or 15° angle, so more dedicated to indoor app to double check access control. Obviously Face Detect won't work at night, with low contrast, in too noisy environment ( the famous stormy moonless night stress test) I advice to start analytic directly by the most dificult situation, to save time, because it will be always easy to get not so bad results with 5000 lux in a quite place.