Camera setup

With the camera in position, the light box switched on and any filters in place the camera can be set up using the measuring system software ('Settings' menu) or the camera vendor's utility. Either way you should be able to open two dialogs called something like 'Image Format' and 'Image Source'.

In the Image Format dialog select 320x240 pixels (or smaller) and 24-bit (or 16-bit) RGB uncompressed format.

In the Image Source dialog, switch automatic exposure OFF. If you are not using HF ballasts, switch anti-flicker ON. Now adjust the manual exposure setting (some call it brightness, others have a separate output image brightness control) until the brightest part of the image just saturates into white. If the product under test has good opacity then it is acceptable to work with the background saturated, for optically thin products it is essential to keep the background unsaturated.

If you used the measuring system software you need to close and restart the program in order to use any changed format settings.

Align the camera so that it covers the full illuminated area, but avoid including anything that moves in the view. (Avoid including the computer monitor screen.) Again, if anything in the background changes, the software will need background calibration.

In the 'settings' dialog of the measuring system enter the estimated total area of the camera's view (in the plane of the table).

Ensure that the camera is in focus.