gpsinghsandhu / background-subtraction-using-gmm Goto Github PK

Hello, I am running the code in Visual Studio 2017 in Debug mode. The code builds successfully, however when I run it I get this error:
line 302 start = N_ptr->pixel_s; --> Exception thrown: read access violation. N_ptr was nullptr.

How can I solve?

Thank you

A quick glance at the precedence table for operators will tell you that postfix increment has a higher precedence (16) than dereference / indirection (15). This means that the complex expression *p++ is going to be grouped as: *(p++). That is to say, the * part will be applied to the value of the p++ part. So let's take the p++ part first.

rVal = *(r_ptr++);
gVal = *(r_ptr++);
bVal = *(r_ptr++);

https://stackoverflow.com/questions/18481740/pointer-expressions-ptr-ptr-and-ptr

I can not find file #include <opencv2\Blob_detection.hpp>, it make an error.