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The input is a 48x48 image. For handwriting recognition, many systems use stroke information (online) to augment the purely image based (offline) data. This sig
by Scaevolus 9y ago
The input is a 48x48 image. For handwriting recognition, many systems use stroke information (online) to augment the purely image based (offline) data. This significantly reduces error rates.
For the smaller ICDAR 2013 Chinese Handwriting Recognition Competition (~8,000 characters), CR(1) accuracy went from 94.77% (offline) to 97.39% (online). Human recognition rates were 95.19% (offline) and 96.13% (online).
- raverbashing 9y agoYes, but the article mentions there's a lot of stroke order inconsistency (errors), so they don't rely on that
- taneq 9y agoSurely you could still use it for hints? (ie. "stroke X followed by stroke Y has a Z% higher chance of being this character rather than that one", much like some phone keyboards use the prior/next words entered to correct words so they make sense in context).
- raverbashing 9y agoProblem is that when these hints push you in the wrong direction One of the examples there was a Chinese character being drawn as something like a 2. The character looks nothing like a 2
- olalonde 9y agoSomewhat unrelated but it's funny how we talk about human recognition rates being below 100%. Obviously, a human somewhere had to decide what all the correct answers were. I understand that it has a specific meaning in the context of machine learning though.