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OpenCV C++/Obj-C: Detecting a sheet of paper / Square Detection

...e I was unable to find a relevant implementation I decided to accept the challenge. I made some modifications to the squares demo present in OpenCV and the resulting C++ code below is able to detect a sheet of paper in the image: void find_squares(Mat& image, vector<vector<Point> >...
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How to remove stop words using nltk or python

... Note: this converts the sentence to a SET which removes all the duplicate words and therefore you will not be able to use frequency counting on the result – David Dehghan Feb 21 '17 at 23:59 ...
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How to parse JSON in Scala using standard Scala classes?

... { "languages": [{ "name": "English", "is_active": true, "completeness": 2.5 }, { "name": "Latin", "is_active": false, "completeness": 0.9 }] } """.stripMargin val result = for { Some(M(m...
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How do you test running time of VBA code?

...Counter. Google it for more info. Try pushing the following into a class, call it CTimer say, then you can make an instance somewhere global and just call .StartCounter and .TimeElapsed Option Explicit Private Type LARGE_INTEGER lowpart As Long highpart As Long End Type Private Declare Fu...
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Convert unix time to readable date in pandas dataframe

...12.15 3 1349979305 12.19 4 1350065705 12.15 In [25]: df['date'] = pd.to_datetime(df['date'],unit='s') In [26]: df.head() Out[26]: date price 0 2012-10-08 18:15:05 12.08 1 2012-10-09 18:15:05 12.35 2 2012-10-10 18:15:05 12.15 3 2012-10-11 18:15:05 12.19 4 2012-10-12 18:15:...
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Why would finding a type's initializer throw a NullReferenceException?

....cs: (196c.1874): Access violation - code c0000005 (first chance) mscorlib_ni!System.RuntimeType.GetConstructorImpl(System.Reflection.BindingFlags, System.Reflection.Binder, System.Reflection.CallingConventions, System.Type[], System.Reflection.ParameterModifier[])+0xa3: 000007fe`e5735403 488b4608 ...
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How to profile methods in Scala?

What is a standard way of profiling Scala method calls? 12 Answers 12 ...
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When to use reinterpret_cast?

...time hence the word static . This is the cast the C++ compiler uses internally for implicit casts also. 11 Answers ...
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Is there a way of making strings file-path safe in c#?

...ered Dec 2 '08 at 7:35 Jonathan AllenJonathan Allen 61.5k6363 gold badges228228 silver badges416416 bronze badges ...
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“Single-page” JS websites and SEO

... the server act as an API (and nothing more) and letting the client handle all of the HTML generation stuff. The problem with this "pattern" is the lack of search engine support. I can think of two solutions: ...