[Vanhackspace] python options dialog

Joe Bowser bowserj at gmail.com
Wed Apr 15 16:19:15 PDT 2009


We should check out the source and throw it on github:

Here's the URL for the code we were using last night:
http://tbeta.nuigroup.com/

On Wed, Apr 15, 2009 at 1:05 AM, dan anderson <dan.j.anderson at gmail.com>wrote:

> Oh, right, I forgot that it's written in python. If they're using this
> library, or one whose image data converts easily, one can control
> brightness and contrast of images - these are not in the hardware and
> so are coarser and less useful, but are computationally cheap:
> currentImage =
> ImageEnhance.Brightness(camera.getImage()).enhance(brightness)
> processedImage = ImageEnhance.Contrast(cuerrentImage, contrast)
>
> 2009/4/15 dan anderson <dan.j.anderson at gmail.com>:
> > As long as the video camera opens via:
> >
> > from VideoCapture import Device
> > camera = Device(1)
> >
> > Then the following two lines will open useful camera settings, which
> > will allow us to have a clean initial image to start with, making
> > calibration easier and giving better data because of reduced noise and
> > a wider usable range.
> >
> > camera.displayCapturePinProperties()
> > camera.displayCaptureFilterProperties()
> >
> > When it gets to finishing touches (possibly never) would matte
> > blacking the interior (not just the inside lips of the rails) stop
> > much of that background IR? It might be possible to put aligned
> > polarizers in front of both the lights and the camera lens so that it
> > could be used with  My materials knowledge is terrible; are there low
> > cost polarizing materials with high IR pass? It would need more or
> > higher output LEDs to hit the same total lumens, but it would filter
> > out a great deal of bg noise. Hell, the easiest and most efficient way
> > to do it, if the material's cheap enough, is to just lay a sheet over
> > the bottom side.
> >
> > It was a blast, I hope to make it next week.
> >
> > -Dan
> >
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