Camera settings for the AVIs - from left to right:

• Image A ... Brightness: 50 Gamma: 0 Saturation: 50 Gain: 20

  In image A the 0 percent gain gives higher contrast between darker and lighter features.

• Image B ... Brightness: 50 Gamma: 50 Saturation: 50 Gain: 20

  For image B the 50 percent gain gives reduced contrast between darker and lighter features.

  The contrast seems too high in image A and too low in image B. The best choice for the webcam camera gamma setting in this case would have been somewhere between 0 and 50 percent.

• Image C ... Brightness: 50 Gamma: 30 Saturation: 75 Gain: 20

  For image C the 75 percent saturation results in highly saturated colors.

• Image D ... Brightness: 50 Gamma: 30 Saturation: 35 Gain: 20

  For image C the 35 percent saturation results in low contrast between colors. Some features that are clearly visible in image A, are invisible in image D.

From left to right the AVIs were generated using progressively higher frame rates.

Some interesting observations from this mini-study are the following:

• 5 frames per second did not result in the highest quality stacked picture
• 15 frames per second did not result in the lowest quality stacked picture
• 10 frames per second gave the best quality stacked picture
• the 15 fps picture is better than the 5 fps picture