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3.9 Image Editor


3.9.1 Opening files in the Image Editor

Following the final scan of music pages, you can choose to “Open Image Editor”. This choice will stop the recognition process and open the scanned pages in the Image Editor. At any time, you can open and edit an existing image file with the “Open” command.

The Image Editor allows you to manually draw in missing system brackets and/or barlines prior to recognition. You can erase or add details as well as being able to delete large areas of unwanted material from the image.


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After touching up scanned pages, recognition can be launched directly from the Image Editor by pushing the “Recognition” button in the Toolbar. Launching rec- ognition will ask you to first save the image with a new name.

• Loading a prescanned image file


To open an image file you have previously scanned,

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a. Press the Open button on the Navigator or choose Open (Ctrl + O) (Cmnd + O

for Mac) from the File menu.

b. Change Files of Type pull-down menu to Image Files.

c. Browse and highlight an image file from the listed saved files. Press Open.


3.9.2 Image Editing Tools


• Image Information

Select View > Image Information to display characteristics about the current scanned image including resolution, file type and page size.


• Zoom


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To Zoom in and out click the Zoom Tool in the Toolbar (Ctrl + Q). Click inside the image will increase the scale of your view (Zoom In), while right-click (alt / option + click for Mac) will decrease the scale of your view (Zoom Out).

• Page


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To view pages of an image file, use the paging buttons in the Toolbar or select

Next Page/ Previous Page from the View menu.

• Image Toolbar

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Crop

Select


Delete Page

Line

Color

RotateR

Deskew

Invert

Freehand

Thickness

RotateL

Threshold


3.9.3 Page Tools

Select

FIGURE 3 - 6: Image Editor Toolbar

Used for selecting a region for cropping, deleting, cutting or copying.

Crop

To crop an image file (trimming unwanted portions of your image from outside a marked frame),

a. Press the Select button in the Image Toolbar.

b. With your mouse, drag a box around the area you wish to keep. If you want to extend the cropping region outside of the display, keep dragging; the page will scroll as you drag up or down.

c. To adjust the marked bounded area, move your cursor over a boundary line, click and drag the boundary to a new position.

d. Select Crop from the Edit menu OR press the Crop button in the Image Toolbar.

The resulting image will be reduced to the area inside the bounded frame. Remember to Save when done.

• Correcting Skew

Page through each scanned image and check for relative straightness of each image page. If a page appears tilted or skewed, recognition accuracy will be compromised. The Deskew tool rotates the image slightly to correct skewed pages and will optimize recogni- tion accuracy.

a. Press the Deskew button in the Image Toolbar or select Deskew from the Edit

menu.

b. Position the cursor over a staff line. Starting from the left side, click and drag the mouse along the length of the staff line. A red “skew angle” line will display as you drag the mouse. When you are certain the red “skew angle” line parallels the staff line, let go. The page will automatically straighten. Repeat for each page. Remember to Save when done.

NOTE: If the page becomes incorrectly rotated, undo with Ctrl + z / Cmnd + z for Mac

(or select Edit > Undo).

Invert

If the image you open in SmartScore is white-on-black (instead of the normal black-on- white), then you should reverse the image output in your scanning software. SmartScore defaults to 0=white polarity.

If your scanned image appears white on black, choose Edit > Invert or choose the Invert

button from the Toolbar.

Delete Page

If there is more than one scanned page in the image file, the Delete Page function is active. Use it to remove poorly scanned or duplicated pages. To re-scan and restore deleted pages, see Section 3.4.2, "Removing, replacing and re-saving scanned pages".

Freehand Draw (Brush)

To draw free hand lines in your image file, select Brush from the Edit menu OR press the Brush button in the Image Toolbar. Choose a line width then click and drag to paint.

Line Draw

Some printed scores have weak or missing stafflines and/or brackets that can create prob- lems during recognition and may result in missing or incorrectly bracketed systems. Sometimes, by accident, brackets and/or barlines are cut off during scanning. If this is the case, you can manually draw in staff line and brackets or enhance their thicknesses.

To restore cut-off or missing system brackets,

a. Select Edit > Line or choose Line Draw in the Image Toolbar.

b. Push the Pen Color push button in the Image Toolbar, if necessary, to choose Black Color.

c. In the Width pull-down selector, choose a fairly wide thickness (10-20 pixels).

d. Click and drag the mouse to draw a line along the missing or broken bracket along the left margin of the music.

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FIGURE 3 - 7: Using Line Draw tool to restore missing bracket


e. When finished modifying the image. Select File > Save As and give it a name.

You may then Recognize the file with corrections.

Line / Brush Thickness


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To change the width of brush or line tool, select a new size from the Width menu in the Image Toolbar. Select from 1 to 50 pixels.


• Black / White Color toggle (Eraser)

Push the “Eraser” button to activate white color. Push again to deactivate it for black color. Or choose Pen Color > Black or White from the Edit menu.

Rotate Left / Rotate Right

To rotate an image file (for landscape formatted scores or upside down scans), go to the

Edit menu and highlight Rotate OR press one of the Rotate buttons in the Image Toolbar.

Rotate the image Left (90 degree rotation).

Rotate the image Right (90 degree rotation).

Select Edit > Rotate > Any to rotate at angles other than 90 degrees.

Thresholding

If note stems and/or staff lines are “razor thin”, recognition will be improved by darkening the image. Use this feature to manually convert grey images to black & white using a vari- able threshold (75% lighter to 75% darker). Many PDF music files and sheets output from laser printers have thin lines (1 pixel wide.) Move the threshold slider far to the right in cases of “razor thin” lines.

Begin Recognition


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After modifying the image, you can save and begin recognition of it by pushing the “Begin recognition” button in the Toolbar.


3.9.4 Cut / Copy and Paste functions

Cut (Edit > Cut)

To cut an area from the scanned image, hit Delete button. Or use the Select tool and drag a box. Cut with Ctrl + “X”.

Copy

To copy an area without removing it from the image, use the Select tool and drag a box with the mouse. Select Edit > Copy (Ctrl + C (Win) / Cmnd + C (Mac)).

Paste

To Paste the cut or copied region into an image file, select Edit > Paste (Ctrl + V / Cmnd

+ V (Mac)). The cut or copied section will drop into the image. With the mouse, drag the fragment anywhere within the image and release the left mouse button. To fix the frag- ment in place, click outside the pasted fragment.


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