As same with Matlab, we can use inequality ">,<,==,>=,<=".
Firstly, we check equal to '0' or '>0', the result is output to '255' if satisfied.
Divide by 255 then elements have left '0' or '1'
And sum all of the element, then we can get the number of zero.
Source code is here..
Mat a = Mat(5, 5, CV_8UC1);
randn(a, 0, 1);
Mat b = (a == 0) / 255;
Mat c = (a > 0) / 255;
cout << "Input matrix matrix a = " << endl;
cout << a << endl;
cout << "number of 0 = " << sum(b);
cout << ", number of over 0 = " << sum(c) << endl << endl;
cout << "matrix b = " << endl;
cout << b << endl;
cout << "matrix c = " << endl;
cout << c << endl;
Image size of origin is 320*240. Processing time is 30.96 second took. The result of stitching The resul...
As you can see in the following video, I created a class that stitching n cameras in real time. https://www.youtube.com/user/feelmare/sear...
This is dithering example, it make image like a stippling effect. I referenced to blew website. wiki page: https://en.wikipedia.org/wik...
The MNIST dataset is a dataset of handwritten digits, comprising 60 000 training examples and 10 000 test examples. The dataset can be downl...
* Introduction - The solution shows panorama image from multi images. The panorama images is processing by real-time stitching algorithm...
(OpenCV Study) Background subtractor MOG, MOG2, GMG example source code (BackgroundSubtractorMOG, BackgroundSubtractorMOG2, BackgroundSubtractorGMG)Background subtractor example souce code. OpenCV support about 3 types subtraction algorithm. Those are MOG, MOG2, GMG algorithms. Det...
make well divided linear coordinate And make pair coordinate Please see code for detail explanation. import numpy as np import cv2 ...
In past, I wrote an articel about YUV 444, 422, 411 introduction and yuv <-> rgb converting example code. refer to this page -> ht...
RTSP(Real Time Streaming Protocol) is video streaming, it usually sent from network camera. VideoCapture function in opencv also can get r...
This is data acquisition source code of LMS511(SICK co.) Source code is made by MFC(vs 2008). The sensor is communicated by TCP/IP. ...