AndroidImageProcessing/AndroidBacteriaImageProcessing — Issue #41: Focus distance requirements
Author: grassick
Created: 2012-01-28 00:13:09+00:00
State: open

The petrifilm center is only 5cm in diameter. If the camera is 2MP, the focus distance to pixels wide are as follows:

5cm = 1200 pixels
10cm = 600 pixels
15cm = 400 pixels
20cm = 300 pixels.

We need to check what the minimum number of pixels is for accurate colony counting and that the camera has a macro mode capable of doing such close focusing.