ABSTRACT
How are these criteria developed? Essentially, these standards were developed by committee and represent (1) the best of what was known at the time of their development and (2) the consensus arrived at by the committee. In some cases, an arbitrary decision is required. For example, luminance contrast (C) can be defined as either (L
produces whole numbers, while the latter formula produces values between 0 and 1.0. If luminance contrast is to be specified as design criteria then only one definition is acceptable, and DoD representatives elected to use the former definition.
