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WebCam Monitor

One of the first experiments is to seen what can be done with the camera through the WebCam Monitor application. The application allows you to record audio and/or video through the menu-bar of the application Also the size of the video can be set in the menu (full, half, quarter size). This menu must also be used to record the video. My settings here are to disable audio and to use full size.

An addition there is a preferences window with multiple sub-screens.

The first screen is the Adjustments-screen, which allows to change the hue, saturation, brightness, contrast and sharpness. The problem is to know what these sliders do as there is no documentation. Normally hue and saturation refer to colors on a color wheel. I would not want to fiddle with these settings and take what I get as raw input. Brightness is related to the amount of white versus black. As I want to detect weak object, a large brightness seems logic without overexposing the image. I guess that contrast relates to the difference between dark and light. This seems import to see the weaker objects. I am not sure what sharpness exactly is. It gives the impression of smoothing over multiple pixels. I guess I have to experiment with these sliders to see what they do exactly and what are my best settings. I have the impression that this screen relates to the software of the WebCam Monitor application.

The second screen is the Compression screen. For some reason this screen a bit damaged. I might have to do a reinstall.

This screen seems to relate to the output. Whether the video is compressed and how. In fact I do not want any compression and I need only a few frames per second.

The third screen is called the SN9C102 screen, so I guess this is the interface with the chip itself.

This seems to be the more interesting screen, but still it is unclear what it does. Gamma is about the color, but what is the best setting? Exposure time sounds interesting, but what does it do in context to movie frames. Anyway more seems better. White Balance must be set thuis that there is no difference between colors. Gain must be low for bright objects and high for weak objects. The video format chosen will be close to native, thus CIF (352x288). I have also the possibility to chose VGA or Mpeg, but I rather take the most raw data. I do not know what Flicker frequency does. Rotate 180 is checked as the telescope creates upside-down images.

The SN9C102 Digital Zoom setting is simple. I do not want any.

Finally there is the sources screen. I set this one to the TAS5110D WebCam/Camera setting. The macam #0 does not seem to work.

In conclusion there are many unknowns and I must experiment. I would like to find a way to calibrate things.

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