High-accuracy edge detection with Blurred Edge Model
Image and Vision Computing
Groove extraction of phonographic records
DAS'06 Proceedings of the 7th international conference on Document Analysis Systems
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The optical retrieval and storage technique called VisualAudio provides a way to extract sound information from an analog disc without any mechanical contact. This paper presents the signal processing aspects and in particular a signal-to-noise ratio analysis of this optical retrieval process, in order to determine its feasibility and the resolution constraints of such a system. A working prototype has been built and has retrieved the sound from several records.