| Paper: | WP-P8.4 |
| Session: | Stereoscopic and 3D Processing VI |
| Time: | Wednesday, September 19, 14:30 - 17:10 |
| Presentation: |
Poster
|
| Title: |
SOUND FROM GRAMOPHONE RECORD GROOVE SURFACE ORIENTATION |
| Authors: |
Baozhong Tian; University of Western Ontario | | |
| | John Barron; University of Western Ontario | | |
| Abstract: |
Preserving historic recording on gramophone records is an important task because the traditional record play back system damages/wears out records eventually. We present an optical flow based method to reproduce the sound signal from gramophone records using 3D robust scene reconstruction of the surface orientation of the walls of the grooves. The imaging setup was modified to overcome a shallow depth of field by using a thin glass plate to obtain additional in-focus parts of the image at a second focal length. The sound signal was recovered from the surface orientation and processed further using the industry standard RIAA filter. The overall algorithm has been tested and found to be working correctly using both undamaged and damaged SP records. |
