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![画素値
? 画像 塩 発生
– void salt(cv::Mat &image, int n){
for(int k = 0; k < n; k++){
//rand() 乱数 生成
int i = rand() % image.cols;
int j = rand() % image.rows;
if (image.channels() == 1){ //
image.at<uchar>(j, i) = 255;
} else if(image.channels() == 3) {// 画像
image.at<cv::Vec3b>(j,i)[0] = 255; //b
image.at<cv::Vec3b>(j,i)[1] = 255; //g
image.at<cv::Vec3b>(j,i)[2] = 255; //r
}
}
}
? .at<型>(j,i) 時間 遅](https://image.slidesharecdn.com/cppcv02-140902105950-phpapp01/85/Cpp-cv02-2-320.jpg)
![他 方法
? //
– image.data[image.step*j + i] = 255;
? // 画像
– image.data[image.step*j + i * 3 + 0] = 255; //b
– image.data[image.step*j + i * 3 + 1] = 255; //g
– image.data[image.step*j + i * 3 + 2] = 255; //r
? Mat image 型 uchar 画像](https://image.slidesharecdn.com/cppcv02-140902105950-phpapp01/85/Cpp-cv02-3-320.jpg)
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Cpp cv02
- 1. C++ / OpenCV 入門 02 熊本大学 胡 ITS 研究室 D1 藤本賢志 2014/09/02
- 2. 画素値 ? 画像 塩 発生 – void salt(cv::Mat &image, int n){ for(int k = 0; k < n; k++){ //rand() 乱数 生成 int i = rand() % image.cols; int j = rand() % image.rows; if (image.channels() == 1){ // image.at<uchar>(j, i) = 255; } else if(image.channels() == 3) {// 画像 image.at<cv::Vec3b>(j,i)[0] = 255; //b image.at<cv::Vec3b>(j,i)[1] = 255; //g image.at<cv::Vec3b>(j,i)[2] = 255; //r } } } ? .at<型>(j,i) 時間 遅
- 3. 他 方法 ? // – image.data[image.step*j + i] = 255; ? // 画像 – image.data[image.step*j + i * 3 + 0] = 255; //b – image.data[image.step*j + i * 3 + 1] = 255; //g – image.data[image.step*j + i * 3 + 2] = 255; //r ? Mat image 型 uchar 画像
- 4. 参考文献 ? OpenCV2 Computer Vision Application Programming Cookbook – http://amzn.to/1pjWFe3 ? – https://github.com/Fujimotec/CppOpenCV