参数2:输出单通道灰度图像 opencv自带函数 1. cvtColor(src, gray, CV_RGB2GRAY); 参数1:输入图像(此处应输入rgb三通道图像) 参数2:输出图像(此处输出单通道灰度图像) 参数3:此处使用CV_RGB2GRAY,表示将读入的rgb彩色图像变为gray灰度图像 2. bitwise_not(src, dst2); 功能:是对二进制数据进行“非”操作,即...
def custom_threshold(image): gray = cv.cvtColor(image,cv.COLOR_RGB2GRAY) #要二值化图像,要先进行灰度化处理 h,w = gray.shape[:2] #求宽高 m = np.reshape(gray,[1,w*h]) #将图像转一维数组,一行,w*h列,转换维度要保证其size不变 mean = m.sum() / (w*h) #求平均值来当做阈值,来分...
#include "opencv/cv.h" #include "opencv2/opencv.hpp" #include "basicOCR.h" #include "time.h" using namespace std; using namespace cv;void ImageRect(IplImage *srcImg, IplImage *dstImg); int main() { /*basicOCR bor; IplImage *image = cvLoadImage("585.pbm",1); IplImage *gray ...
2.3 调用Canny函数的实例代码 1#include <opencv2/core/core.hpp>2#include <opencv2/opencv.hpp>3#include <opencv2/highgui/highgui.hpp>4#include <opencv2/imgproc/imgproc.hpp>5#include <iostream>67usingnamespacestd;8usingnamespacecv;910/*---11【1】Canny算子12---*/13intmain()14{15//载入原...
#include"opencv2/opencv.hpp" usingnamespacecv; usingnamespacestd; //内核函数 __global__voidrgb2grayincuda(uchar3 *constd_in,unsignedchar*constd_out, uint imgheight, uint imgwidth) { constunsignedintidx = blockIdx.x * blockDim.x + threadIdx.x; ...
cv::cvtColor(FrameRGBc0, framec0_gray, cv::COLOR_RGB2GRAY); the program compiles successfully without any errors using the command: g++ -O3 test_cpp_example.cpp -o test_cpp_example `pkg-config --cflags --libs opencv4` -lpthread
#include "opencv2/opencv.hpp" using namespace cv; using namespace std; //内核函数 __global__ void rgb2grayincuda(uchar3 * const d_in, unsigned char * const d_out, uint imgheight, uint imgwidth) { const unsigned int idx = blockIdx.x * blockDim.x + threadIdx.x; ...
#include<opencv2\core\core.hpp> #include<cv.h> int main(void){ int width;//图像宽度 int height;//图像⾼度 RGBQUAD *pColorTable;unsigned char *pBmpBuf,*pBmpBuf1;BITMAPFILEHEADER bfhead;BITMAPINFOHEADER bihead;FILE *fp1=fopen("e:\\picture\\dog.bmp","rb");if(fp1==0)return 0;frea...
/* main.cu */#include<iostream>#include#include"opencv2/highgui.hpp" //实际上在/usr/include下#include"opencv2/opencv.hpp"usingnamespacecv;usingnamespacestd;//内核函数__global__voidrgb2grayincuda(uchar3*constd_in,unsignedchar*constd_out,uintimgheight,uintimgwidth){constunsignedintidx=blockIdx...
我把timehandle的matlab代码改成了C,发现果然很慢啊,检测一张320*240的图要好久,相比之下opencv的实现就比较快了。 最近在实现IHOG+ADABOOST 后来改进算法综述: 1. IHOG Zhu et al. Fast Human Detection Using a Cascade of Histograms of Oriented Gradients. CVPR 2006.该文主要的贡献在于将积分图像的概念...