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NetCam Page 37
both uorescent and halogen lights will illuminate the room with
different color temperatures, which will be visible in the NetCam
images.
4.2 Image Processing Options
The images produced by NetCam are processed and compressed inside
the camera. Many options that affect the quality of the image are available
on the Image Properties Page -- the important ones are listed here (for a
complete list, see Chapter 2.1).
Brightness - This controls how the bright the auto exposure will adjust
the image. When auto exposure is enabled (which it should be,
especially when doing outdoor imaging), this is the main control you
will need to adjust to increase or decrease the overall brightness of
the live images. If your images are coming out dark during daylight
(or indoor lighting), increase this value.
Saturation - This value represents the amount of color in the image. The
higher the number, the more the saturated the colors become. The
default value works well in most cases. If you do want more color
saturation, increasing the number from its default of 1200 to 1300
should do the trick. Anything higher may start to produce undesired
color effects.
Gamma - This adjusts the amount of detail visible in shadowy areas, at
the expense of increased haziness. Try increasing the default value of
1700 to 1800 to see more details in dark areas. Or if you want more
contrast, reduce it to between 1000 and 1500.
Sharpen - For the best quality images, this should always be left on.
JPEG Quality - The default value of 70 works well in most cases. The
compression artifacts are minimal and the le size small. While
increasing the quality will result in a slightly clearer image (less
JPEG compression artifacts), the signicantly increased le size
hardly makes it worthwhile, especially when the quality is set to
90 or higher. Conversely, if you’d like images to download/upload
faster for viewers with dial-up Internet connections, you can reduce
the JPEG quality which decreases the le size. A value of 50 still
results in good looking images at a very small le size.