JavaScript conversion - some help requested

[pdr0663]

Firstly, thank you for developing this code, it's quite impressive. I'm trying to port this to JavaScript to run in node.js on a little Raspberry Pi project I'm doing. I'm not familiar with C++, so some of the syntax is beyond me at this stage, and I'd appreciate a little help to interpret your code. I'll list the bits I don;t understand, and invite you to comment. I'm looking at your image.cpp code.

Mat gray(image.size(), CV_MAKETYPE(image.depth(), 1)); // To hold Grayscale Image
I'm not sure about this syntax. it looks to my eyes like a variable or function declaration, but seems to be neither. Are you declaring a variable with name "gray", and instantiating somehow? Is "gray" a function?

vector<vector<Point> > contours; vector<Vec4i> hierarchy; vector<Moments> mu(contours.size()); vector<Point2f> mc(contours.size());
This one's got me as well. Can't seem to find "mu" or "mc" as functions. Is "vector" a class in your project, or does it come from OpenCV? The syntax is completely foreign to me, perhaps you could explain what is being done in these lines...

Thanks for any help you can provide.

Paul

[pdr0663]

Done, completed and working. A little slow in node.js...

Thanks for your fine work!

Paul