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I have a load of images (lots of them anatomy images, I am a medical student) and I want to turn them into flashcards. The part I am having trouble with is the modification of the image so that it hides the answers from me (in a logical way).

I have a whole load of images like this:

Labeled AnatomyImage And I want to remove the text and replace it with numbers so it looks like this (the numbers are key): enter image description here

How can I do this quickly? I do not need it to be automated just user friendly and quick (I have to be able to make these as I go through my courses). So far I have been thinking about covering the text with white rectangles and using some type of stamp tool that automatically incremented the number each time I clicked.

The problem is I am not sure what application to use and how to make such an automated stamp tool.

Any other ideas would be very welcome.

Really appreciate the help, Justin

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How "key" are the numbers? Given you are only asking one question on the flash card, a '?' next to the line of the feature you want named should be enough? – Paul Dec 23 '12 at 3:01
My reasoning behind the numbers is as follows: I want to minimize the amount of space used for storing media. If I can have one image that is referenced by 15 cards (as in the example above) I only need to store 1 image. Because of that I feel the numbering is pretty important. – jds Dec 23 '12 at 3:20
Yeah I see. Can your flash cards do multiple images? If it can then you could keep the central part of the image the same, and just use a different image to the left or right showing which feature the card was after. That image could be a thin strip with the question mark aligned. If the flash cards support html, this could also be a single image with different top-margin to position it right. – Paul Dec 23 '12 at 4:04
I feel like that would ultimately take up a lot more work than the brute force method of using something like OSX with their annotation tools. – jds Dec 23 '12 at 19:57
Ok cool. If you have found an approach, please add it as an answer if no one else comes up with anything. Sounds like it will be useful. – Paul Dec 24 '12 at 2:16
up vote 0 down vote accepted

One method could use an image-editing tool like the GIMP.

You could prepare in advance rectangular images, each with its own consecutive number, then paste them on top of the text.

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Since you do not need automation, pick any drawing program that can draw rectangle and text, even MS Paint will work.

  1. Open the image
  2. Use box tool to draw 2 big white rectangles, one on each side of the image to cover all the words but not touching the picture in center.
  3. Use text tool to start putting numbers by the end point of each line.

To make the process even quicker, memorize the "shortcut" to switch between 'box tool', 'text tool' and 'save as'.

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