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Teaching Your Computer to Read By Matthew Falk

Process Scan an image and find ink (signifying text). Look for ink blots Identify a single connected blot of ink Put the character through recognition test Classify the character as a specific letter

Shape Classification - Rectangle It has four sides. It is closed. No lines cross. It has four right angles. Rectangle

A lot of rules.Very easy to miss one.Could over constrain with too many rules.Is there a better way?

Better Approach – Model Fitting Build model for character Require that character fits in model Ignore all models that don’t fit

Building Appropriate Models Must build a model that fits all rectangles. Overlay a lot of rectangles together and draw a box around them.

Time for some Reading ? E

Intuition Character must fit inside of a given model AND a model must fit inside a given character. B E E

Degraded Letters Broken Letters Stuck Together Letters Complications

Comments

= Royal East

Teaching Your Computer to Read Construct a table of models for all of the characters you want to be able to read. Reduce image to single ink blot, representing a single character. Build the model for your character. Check the table for a model that maps in both directions to your character. Classify and read your character.