piclist 2009\01\31\160633a >
Thread: Whiteboard image extraction
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face BY : Ian Smith email (remove spam text)



On Sat, 31 Jan 2009, Neil Cherry wrote:
> One thing I've found useful is to use the video camera instead of the still
> camera. It seems to get more information and I can't keep a camera very
> still.

The biggest drawback with digital image sensors is they are not very
sensitive to light, so they require long esposure times which leads to
blurry images.

The reason a video camera usually gives better images is that the sensors
tend to be larger, allowing more light to hit each cell, and the
resolution is much smaller.  Think 1 megapxel vs 10 megapixels.  Much less
noise.

One thing to try is set your camera to the highest ISO setting, and reduce
the resolution down.  You loose resolution to gain sharpness.

--
Ian Smith
http://www.ian.org
<Pine.LNX.4.58.0901311302250.25846@bolt.sonic.net> 7bit

In reply to: <4984AAA7.5000701@linuxha.com>
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Subject (change) Whiteboard image extraction

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