Code

/* 作者：鄭大峰 時間：2019年09月20日 環(huán)境：OpenCV 4.1.1 + VS2017 內(nèi)容：Create a Blank Image & Display */#include "pch.h" #include <iostream> #include <opencv2/opencv.hpp>using namespace std; using namespace cv;int main() {// Create a new image which consists of // 800 x 600 of resolution (800 wide and 600 high)// image depth of 8 bits & 3 channels // each pixels initialized to the value of (100, 250, 30) for Blue, Green and Red planes respectivelyMat image(600, 800, CV_8UC3, Scalar(100, 250, 30));String windowName = "Window with Blank Image";namedWindow(windowName);imshow(windowName, image);waitKey(0);destroyWindow(windowName);return 0; }

Result

Explanation

Mat::Mat(int rows, int cols, int type, const Scalar& s)

This constructor will create a Mat object with specified number of rows and number of cols and initialize each element with the value given in s.

@param rows Number of rows in a 2D array.
@param cols Number of columns in a 2D array.
@param type Array type. Use CV_8UC1, ..., CV_64FC4 to create 1-4 channel matrices, or CV_8UC(n), ..., CV_64FC(n) to create multi-channel (up to CV_CN_MAX channels) matrices.
@param s An optional value to initialize each matrix element with. To set all the matrix elements to the particular value after the construction, use the assignment operator Mat::operator=(const Scalar& value) .

轉(zhuǎn)載于:https://www.cnblogs.com/zdfffg/p/11557734.html

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