Trying to fill color on square-like object using OpenCV and Java

Asked May 09 '18 at 12:36

Active May 09 '18 at 16:33

Viewed 136 times

I am trying to fill color to that square objects. It does not look like a perfect square. I have attached 4 sample images. Please have a look at it. Please help me with your ideas.

By using this code I can change the background and line colors. But I want to fill color that unshaped squares (squares only not triangle).

System.loadLibrary( Core.NATIVE_LIBRARY_NAME );
String img_url1 = "C:\\\\Users\\\\me\\\\Desktop\\\\cpt\\\\1.png";
Mat img = Imgcodecs.imread(img_url1, -1);

List<Mat> channels = new ArrayList<>();
Core.split(img, channels);

Mat black = new Mat();
Core.bitwise_not(channels.get(3), black);

String file2 = "C:\\\\\\\\Users\\\\\\\\me\\\\\\\\Desktop\\\\\\\\cpt\\\\\\\\1-cpy.png"; 
Imgcodecs.imwrite(file2, black);

Input Images :

edited May 09 '18 at 16:33

Cris Luengo

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asked May 09 '18 at 12:36

Greeny Clicks

What result do you obtain with your code? If i understand you correctly, that are only the inputs images. – SilverMonkey May 09 '18 at 12:38
Yes these are input images – Greeny Clicks May 09 '18 at 12:42
I don't know where to start with.. looking for some idea – Greeny Clicks May 09 '18 at 12:43
And you only want to fill the rectangles, not the triangles? – SilverMonkey May 09 '18 at 12:45
Yes I want to fill rectangles only – Greeny Clicks May 09 '18 at 12:46
See this [answer](https://stackoverflow.com/a/11427501/2286337). – zindarod May 09 '18 at 20:05
I checked but that is something about regular shape right? But in my case it is irregular – Greeny Clicks May 11 '18 at 07:56

Trying to fill color on square-like object using OpenCV and Java

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