Tuesday, June 16, 2009

Who judges? Who does science?

No need for links here. One day or another, we all stumbled upon one of these papers in which the hidden payload is a binary bitmap logo. Maybe it is deeply rooted in one of the founding papers of the field.

Anyway. The point is: Are we doing science or not?

If we are really doing some science, we are preferably to talk about quantities like capacity. In real life with sound experiments, it boils down to compute/simulate the Bit Error Rate (BER).

But then people come around and say that a judge will better recognize a logo than the fact that a probability is quite low. We agree. A judge does not do science.

But it is always easier to make a covert channel with a given BER carry a given logo, than to compare two given data-hiding schemes only based on the visual appearance of the recovered logos.

We all aim at doing science. So please: No more logos. Please.

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