I am working in facial feature detection in video images. I was hoping to get some general advice about camera/lens technologies to determine if I can upgrade my camera/lens.
Basically, the problem is this:
I want to obtain high resolution images of facial features.
I currently use a Thorlabs DC1545M CMOS camera and a 16mm focal length lens. Generally, when I extract the facial features, the image regions have acceptable resolution if the face is about 40cm or less from the camera. If face moves further away from the camera, the resolution of the facial features starts to get too low for my purposes. Additionally, the camera/lens has a short depth of field so the face will often go a little ‘out of focus’ as the face moves.
For this region I was hoping to improve my camera and lens setup. However, I am not strong on camera hardware so I am not entirely sure if what I am thinking is available.
Basically, my ideal camera would do the following:
It would have an optical zoom.
The zoom would be programmable.
It would be able to have a long depth of field so the image stays in focus. Basically the face will be closer than about 100cm to the camera so I would like face to stay in focus.
I would like the camera to be sensitive to infra-red light (Near IR).
One other thing. Right now, I could use off-the-shelf camera/lens. However, I would also be interested in board level camera/lens components.
I was hoping someone could give me ideas about what I should be looking for.
- Are there problems with my specification?
- Do you know of any cameras/lens with the specification?
- Do you have any general advice about what I should be thinking about before looking to buy a camera for this kind of research???