You could try Musitek's SmartScore which is a lot better than its predecessor MIDISCAN.www.musitek.com
BUT:
Scanning is not simply a fast and easy input method. It is far from perfect. Expect to spend some time correcting errors, like wrong notes, wrong rhythms &c. In the end, you might spend more time corecting scanning errors than the time needed for manual input. Imagine that the scan is 95 % correct. Then 1 out of 20 details needs correction.
You will get the best results if you scan simple examples without a lot of details, e. g. only music in simple rhythms without fingerings, lyrics, chords, articulations, expressions &c.
And you will get better results when scanning scores created in Finale using Maestro, Finale's main font.
If the score is complex with a lot of details, forget about scanning, and stick with manual input. Remember that Speedy Entry can be quite fast. And if the same music appears later in the score you can save time by using the Mass Mover Tool.
Peter