Timeline for How to detect crosses and circles in 60x60 raster images?
Current License: CC BY-SA 3.0
25 events
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| May 23, 2017 at 12:35 | history | edited | CommunityBot |
replaced http://stackoverflow.com/ with https://stackoverflow.com/
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| Apr 13, 2017 at 12:55 | history | edited | CommunityBot |
replaced http://mathematica.stackexchange.com/ with https://mathematica.stackexchange.com/
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| May 15, 2013 at 21:29 | comment | added | hhh | @george2079 that is a totally new question: perhaps some machine-learning algorithms for this kind of things where the user needs to specify first the ambiguities and then the program would learn with it? The sloppy O is easily 6 and 9: any machine learning specialist to ask a question about this? :) | |
| May 15, 2013 at 20:29 | comment | added | hhh | @Mr.Wizard there is one thing I cannot understand: when I run your code, it outputs tiny-tiny O, X and ERRs. Is it possible to get the output as ASCII so easier to read or is there some setup in Mathematica to handle the output format? | |
| May 15, 2013 at 18:14 | comment | added | george2079 | many of the approaches here will fail if the input is even a little sloppy, not closing the "O". | |
| May 15, 2013 at 16:51 | history | edited | hhh | CC BY-SA 3.0 |
The appending broke the references, fixed one bug...
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| May 13, 2013 at 0:39 | vote | accept | hhh | ||
| May 15, 2013 at 20:28 | |||||
| Apr 22, 2013 at 21:43 | vote | accept | hhh | ||
| Apr 22, 2013 at 21:43 | |||||
| Apr 19, 2013 at 14:20 | comment | added | Sjoerd C. de Vries | @rm-rf OK, I see. Thanks | |
| Apr 19, 2013 at 13:35 | comment | added | rm -rf♦ | @Sjo Most dictionaries (and I mean ones used in, say, Word or browsers and not OED) also have a list of common names from top X countries. I'm sure Dutch names (at least, the more common ones) are in that list. For instance, Chrome does not highlight any word in "Sjoerd de Vries" as a typo when I type it in a box, nor does it for "Heike", "Jeroen", "Johann", etc., but it does highlight "Arnoud" (less common?). Arnoud also mentioned that it uses other heuristics, so perhaps there's more to it such as using a database of common letter combinations for local match and a dictionary for global... | |
| Apr 19, 2013 at 5:22 | comment | added | Sjoerd C. de Vries | @rm-rf Good find. What is strange: I have been using TextRecognize successfully to get (Dutch) names from scanned pages in a yearbook. So, I don't quite understand how that chimes with the use of a dictionary. | |
| Apr 19, 2013 at 0:10 | comment | added | rm -rf♦ | @SjoerdC.deVries here | |
| Apr 18, 2013 at 21:21 | history | edited | hhh | CC BY-SA 3.0 |
...fixes
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| Apr 18, 2013 at 21:06 | history | edited | rm -rf♦ | CC BY-SA 3.0 |
appended answer 23566 as supplemental
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| Apr 18, 2013 at 20:47 | comment | added | Sjoerd C. de Vries | As to the failure of TextRecognize: I seem to remember having read somewhere it uses a dictionary approach and it is therefore better in recognizing words than separate characters. | |
| Apr 18, 2013 at 20:22 | answer | added | Niki Estner | timeline score: 19 | |
| Apr 18, 2013 at 19:56 | history | tweeted | twitter.com/#!/StackMma/status/324974635944927233 | ||
| Apr 18, 2013 at 19:38 | history | edited | hhh | CC BY-SA 3.0 |
added 7 characters in body
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| Apr 18, 2013 at 19:37 | answer | added | Mr.Wizard | timeline score: 33 | |
| Apr 18, 2013 at 19:24 | history | edited | Mr.Wizard |
edited tags
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| Apr 18, 2013 at 19:19 | history | edited | hhh | CC BY-SA 3.0 |
I added an example upon the request about a bit harder case: this requires more preprocessing such as smoothing/rotating, finding the squares, etc.
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| Apr 18, 2013 at 19:10 | comment | added | Niki Estner |
In general, ImageCorrelate and ComponentMeasurements might be worth a try.
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| Apr 18, 2013 at 19:09 | answer | added | Dr. belisarius | timeline score: 10 | |
| Apr 18, 2013 at 19:08 | comment | added | Niki Estner | Can you add a few sample images, so potential answerers can test their answers? | |
| Apr 18, 2013 at 18:57 | history | asked | hhh | CC BY-SA 3.0 |