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seen Dec 22 '11 at 14:01

Apr
6
awarded  Nice Question
Mar
14
awarded  Popular Question
Dec
22
awarded  Supporter
Dec
7
comment Is it possible to measure distance to an object by adjusting the focus?
@jrista: No, there is a camera already in place for monitoring reasons. We are just trying to get more out of it.
Dec
7
comment Is it possible to measure distance to an object by adjusting the focus?
Thank you for your response. Do you have any idea how the camera is able to populate this field? How do they measure the distance and how precise do they measure the distance?
Dec
7
comment Is it possible to measure distance to an object by adjusting the focus?
@PaulCezanne: We are looking at objects that are about 20-30cm (~8-12inches) away from the camera. I would be interested in what would be feasible at those distances. How precise could I measure the distance by just playing with the focus.
Dec
7
awarded  Student
Dec
7
comment Is it possible to measure distance to an object by adjusting the focus?
Right now we use an OV5642 image sensor from OmniVision. But that is not important, we would buy whatever works the best. As you can tell I am not an expert on cameras. I just program the image processing software backend. It was just an idea I had. We use lasers for triangulation, but often have problems with reflective surfaces. So we need some sort of passive way to estimate the distance. The other alternative is of course with two cameras. But I am interested if there are ways with just one by adjusting the focus.
Dec
7
asked Is it possible to measure distance to an object by adjusting the focus?
Mar
2
comment How can I remove the background of a photo using GIMP?
@danio: Most people come to the stackexchange sites via google. I am sure this question will soon also be ranked up high. I doubt people will then find your comment helpful.