Comparing to an imperfect "ground truth" (Aneesh Vartakavi )

Subject: Comparing to an imperfect "ground truth"
From:    Aneesh Vartakavi  <aneeshvartakavi@xxxxxxxx>
Date:    Wed, 16 May 2012 15:46:24 +0530

Dear list, I'm actually working on image reconstruction in Optical Coherence Tomography (OCT), but I believe the problem is relevant to this group as well. My goal is to compare the performance of a few image reconstruction algorithms using a few metrics. My problem is that the experimentally obtained reference image is not free from defects. Intuitively, a simple metric like MSE (between reference image and reconstructed image) would not be applicable. A similar problem could be 'cleaning up' of a noisy speech signal. Without access to the original, clean speech signal, I'd like to compare how different algorithms perform with respect to the original, noisy signal. The differences are apparent to a listener, but how can I quantify this 'difference' without a clean reference to go by? Any insight would be helpful! Regards, Aneesh Vartakavi Indian Institute of Science (IISc), Bangalore, India.

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