Digitize Scanned Hard-Copy Oscillogram Using Brightness Recognition - ByteScout

Digitize Scanned Hard-Copy Oscillogram Using Brightness Recognition

  • Home
  • /
  • Articles
  • /
  • Digitize Scanned Hard-Copy Oscillogram Using Brightness Recognition
How to digitize oscillgram using brightness recognition mode in Graph Digitizer Scout

This page contains example of digitizing oscillogram from scanned hard-copy paper back to data using brightness recognition method in Graph Digitizer Scout software.

First download, install and run Graph Digitizer Scout

This tutorial describes how to use Graph Digitizer Scout to digitize oscillogram from a journal or book:

Source hard-copy oscillogram to digitize

Run Graph Digitizer Scout:

Graph Digitizer Scout software running

Open file with the scanned picture (you can also directly scan picture from Graph Digitizer Scout):

Use Open command in File menu to open image you need to digitize

Browse and select file with scanned image to be digitized

Use Binding Tool to bind graph to the coordinate grid. Use By 4 Points mode:

Binding mode selection

Set Xmin, Xmax, Ymin, Ymax points:

Setting Xmin, Xmax, Ymin, Ymax points

After you’ve clicked Ymax point, the program will ask to confirm and enter values that you can find on the original picture. Enter values of Xmin, Xmax, Ymin and Ymax you’ve pointed and click OK to confirm:

Enter Xmin, Xmax, Ymin,Ymax values from source picture

Now grid is corrected according to the original picture scale units:

Grid in Graph Digitizer Scout aligned to the original grid on picture

Set Blur for the picture to 2 for better recognition results:

Apply blur effect to the image

Blur applied to the picture:

Blur effect applied

Now click Set Digitization Region tool and select Region mode:

Digitization region selection tool

Then select a region with oscillogram:

Selecting region to digitize using mouse

Set recognition mode to By Max Brightness by pressing F5

Press F9 on your keyboard to start digitization:

The program will recognize graph and place points for the oscillogram:

Automatically digitized oscillogram

Correct points in Correcting Mode (press F8 to set Manual mode) if required:

Switch to Correcting Mode to correct first point

Correcting some points – click on point using mouse:

Click the very first point to select

And then click new position for selected point:

Click on new position to move point to new position

Correction is done.

Save data to the file using File | Save Data…

Save Data command in File menu to save data to file

Enter filename and click Save

Enter filename for file with digitized data

You can also copy data to the clipboard for use in another software, for example, Excel

To copy data to the clipboard please use Edit menu and Copy command as shown below:

Copy data to clipboard using command from Edit menu

Now run Excel and use Paste command in Edit group to paste data from clipboard:

Use Paste command in Excel to paste chart data to Excel from clipboard

This will insert data to the Excel as 2 columns automatically:

Data pasted to Excel from clipboard

Now you can use it to generate a chart

Go to Insert menu and select Chart command:

Chart command in Insert menu to create new chart based on data from clipboard

Select chart type for new chart and click Finish to insert chart:

Select Chart type

Excel generates a chart based on data from oscillogram:

New chart is based on data converted from scanned hard copy using Graph Digitizer Scout