Sketch Recognition

A testing ground for various sequence matching algorithms.

Please see the demo.

Milestones

A simple list to keep myself reminded.

Done

☑ User/Web prototype for free data input

• Make 2D drawing generally accessible to algorithms, by substituting plane/space coordinates to discrete angular information.
• Use the advantage of not caring about initial input rotation or continous input sampling or scale.

red: user drawn path

blue: delayed projection at every node of path

(turquoise: distance between nodes)

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Upcoming

• Fully implement multi-dimensional featureset.

☐ Record matchable patterns

• Das Haus vom Nikolaus
• Numbers 0-9
• Alphabet A-Za-z

☐ Write sequence matching algorithm: DTW

• "walking" approach (online, dynamic programming, no matrices)
• "accelerated" approach (skip overweighted values)
• "multisample" approach (fuzzy detection)

☐ Consider other algorithms

• LCS

☐ Output and status reports

• offline - website / html
• online - SOAP, JSON