Project IRENE Using optical scanning to digitize ethnographic field recordings on wax cylinders

Noise Reduction: Data With Defects Detected

A sample of data with defects that can cause unwanted noise. An algorithm has analyzed the image and found effects whose boundaries are too steep to be actual audio content. It has circled them in orange and in the next step of the process will blur their edges with surrounding pixels to reduce the effect they have on the audio from in that part of the cylinder.
Actual Dimension:
Exhibit Tags:
diagram, method, blob cleaning, image processing, and cleaning