Biomedical engineering education: how to do what, with which, and to whom.
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Biomedical Engineering↗
Biomedical subjects
L D Harmon
Publications and source records attributed to L D Harmon.
Masking in visual recognition: effects of two-dimensional filtered noise.
It is difficult to recognize portraits that have been coarsely sampled and quantized. Blurring such images improves recognition. A simple, straightforward explanation is that high-frequency noise introduced by the sampling and quantizing must be removed by low-pass filtering to improve the signal-to-noise ratio and hence signal detectability or recognition. Experiments reported here, suggested on the basis of a different model, show instead that noise bands that are spectrally adjacent to the picture's spectrum are considerably more effective in suppressing recognition.
Computers↗