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Image Editing

Thresholding (greyscale scanning)

Last updated: 07/30/2024

If your score was scanned in grayscale (and hopefully it was), you will be able to adjust it’s relative lightness / darkness to achieve a nice balance of solid black symbols against a stark white background.


How it works …

Animation (0:39) - Tresholding
Important info for Piano

Explained step by step …

1
Use the slider inside the Threshold tool to optimize greyscale black-on-white balance. Before committing, use the Preview to confirm (rich blacks/white whites).
2
Examine the notation and compare. Repeat until you see a nice balance between thick black lines against solid white background.
3
Once satisfied, click OK.
 

NOTE …

Thickness counts for good recognition accuracy !
It’s not always necessary to apply thresholding. It’s useful only if the original scan is particularly weak or too dark.

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Straightening crooked scans
See also ⚆⚆
Image Editing (Overview)
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