bharathp666 / opencv_qr Goto Github PK

I get the following runtime:

[1] 8124 segmentation fault ./qr_video

Any idea what might be causing the issue?

Hi
Thanks very much for providing this code and I am going to use it for a robotics project , try to run the code on a virtual machine which installed ubuntu 14.04 and the host is windows 8.1 , after finish the readme , it just tell me ERR: Unable find input Video source.

The following line of code:

if ((clr_flg[lx - 1] == blob_count) || (clr_flg[lx + 1] == blob_count)) //Check for the continuity with previous scanned data

is executed with lx=0 and lx= size_of(clr_flg)-1 causing a runtime crash.

Hi,
How can I decide when to save a qr image extracted with your tool, to be sure that the qr is ready to be analyzed??

thanks

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