C++ OpenCV良好特性在Obj-C-C+中跟踪+;
我试图迭代从cv::goodFeaturesToTrack获得的点 我使用以下代码检索我的点:C++ OpenCV良好特性在Obj-C-C+中跟踪+;,c++,objective-c,opencv,C++,Objective C,Opencv,我试图迭代从cv::goodFeaturesToTrack获得的点 我使用以下代码检索我的点: std::vector<std::vector<cv::Point2f> > corners; cv::goodFeaturesToTrack(image,corners, 500, 0.01, 10); std::向量角点; cv::良好特性跟踪(图像,角点,500,0.01,10); 我的想法行不通: for (size_t idx = 0; idx < corn
std::vector<std::vector<cv::Point2f> > corners;
cv::goodFeaturesToTrack(image,corners, 500, 0.01, 10);
std::向量角点;
cv::良好特性跟踪(图像,角点,500,0.01,10);
我的想法行不通:
for (size_t idx = 0; idx < corners.size(); idx++) {
cv::circle(image,corners.at(idx),radius,color,thickness);
}
for(size_t idx=0;idx
有什么想法吗?不知道你说的“不起作用”是什么意思。但是,您可以尝试查看,看看这种用法是否可以解决您的问题
使用代码更新:
/**
* @function goodFeaturesToTrack_Demo.cpp
* @brief Demo code for detecting corners using Shi-Tomasi method
* @author OpenCV team
*/
#include "opencv2/highgui/highgui.hpp"
#include "opencv2/imgproc/imgproc.hpp"
#include <iostream>
#include <stdio.h>
#include <stdlib.h>
using namespace cv;
using namespace std;
/// Global variables
Mat src, src_gray;
int maxCorners = 23;
int maxTrackbar = 100;
RNG rng(12345);
const char* source_window = "Image";
/// Function header
void goodFeaturesToTrack_Demo( int, void* );
/**
* @function main
*/
int main( int, char** argv )
{
/// Load source image and convert it to gray
src = imread( argv[1], 1 );
cvtColor( src, src_gray, COLOR_BGR2GRAY );
/// Create Window
namedWindow( source_window, WINDOW_AUTOSIZE );
/// Create Trackbar to set the number of corners
createTrackbar( "Max corners:", source_window, &maxCorners, maxTrackbar, goodFeaturesToTrack_Demo );
imshow( source_window, src );
goodFeaturesToTrack_Demo( 0, 0 );
waitKey(0);
return(0);
}
/**
* @function goodFeaturesToTrack_Demo.cpp
* @brief Apply Shi-Tomasi corner detector
*/
void goodFeaturesToTrack_Demo( int, void* )
{
if( maxCorners < 1 ) { maxCorners = 1; }
/// Parameters for Shi-Tomasi algorithm
vector<Point2f> corners;
double qualityLevel = 0.01;
double minDistance = 10;
int blockSize = 3;
bool useHarrisDetector = false;
double k = 0.04;
/// Copy the source image
Mat copy;
copy = src.clone();
/// Apply corner detection
goodFeaturesToTrack( src_gray,
corners,
maxCorners,
qualityLevel,
minDistance,
Mat(),
blockSize,
useHarrisDetector,
k );
/// Draw corners detected
cout<<"** Number of corners detected: "<<corners.size()<<endl;
int r = 4;
for( size_t i = 0; i < corners.size(); i++ )
{ circle( copy, corners[i], r, Scalar(rng.uniform(0,255), rng.uniform(0,255), rng.uniform(0,255)), -1, 8, 0 ); }
/// Show what you got
namedWindow( source_window, WINDOW_AUTOSIZE );
imshow( source_window, copy );
}
/**
*@function goodFeaturesToTrack\u Demo.cpp
*@使用Shi-Tomasi方法检测角点的简要演示代码
*@author-OpenCV团队
*/
#包括“opencv2/highgui/highgui.hpp”
#包括“opencv2/imgproc/imgproc.hpp”
#包括
#包括
#包括
使用名称空间cv;
使用名称空间std;
///全局变量
Mat src,src_灰色;
int=23;
int maxTrackbar=100;
RNG RNG(12345);
const char*source_window=“Image”;
///函数头
void goodFeaturesToTrack_Demo(int,void*);
/**
*@主功能
*/
int main(int,字符**argv)
{
///加载源图像并将其转换为灰色
src=imread(argv[1],1);
CVT颜色(src、src_灰、颜色_BGR2灰);
///创建窗口
namedWindow(源窗口,窗口自动大小);
///创建轨迹栏以设置角数
createTrackbar(“最大转角:”,源窗口和最大转角,最大轨迹栏,良好特性跟踪演示);
imshow(源窗口,src);
良好特性跟踪演示(0,0);
等待键(0);
返回(0);
}
/**
*@function goodFeaturesToTrack\u Demo.cpp
*@brief-Apply-Shi-Tomasi角探测器
*/
void goodFeaturesToTrack\u Demo(int,void*)
{
如果(maxCorners<1){maxCorners=1;}
///Shi-Tomasi算法的参数
矢量角点;
双质量水平=0.01;
双心距=10;
int blockSize=3;
bool-usehrisdetector=false;
双k=0.04;
///复制源图像
复印件;
copy=src.clone();
///应用角点检测
良好的跟踪特性(src_gray,
角,
马克斯角,
质量等级,
心灵距离,
Mat(),
块大小,
使用HarrisDetector,
k);
///绘制检测到的角点
不能肯定你所说的“不起作用”是什么意思。但是,你可以试着看看这个用法是否能解决你的问题
使用代码更新:
/**
* @function goodFeaturesToTrack_Demo.cpp
* @brief Demo code for detecting corners using Shi-Tomasi method
* @author OpenCV team
*/
#include "opencv2/highgui/highgui.hpp"
#include "opencv2/imgproc/imgproc.hpp"
#include <iostream>
#include <stdio.h>
#include <stdlib.h>
using namespace cv;
using namespace std;
/// Global variables
Mat src, src_gray;
int maxCorners = 23;
int maxTrackbar = 100;
RNG rng(12345);
const char* source_window = "Image";
/// Function header
void goodFeaturesToTrack_Demo( int, void* );
/**
* @function main
*/
int main( int, char** argv )
{
/// Load source image and convert it to gray
src = imread( argv[1], 1 );
cvtColor( src, src_gray, COLOR_BGR2GRAY );
/// Create Window
namedWindow( source_window, WINDOW_AUTOSIZE );
/// Create Trackbar to set the number of corners
createTrackbar( "Max corners:", source_window, &maxCorners, maxTrackbar, goodFeaturesToTrack_Demo );
imshow( source_window, src );
goodFeaturesToTrack_Demo( 0, 0 );
waitKey(0);
return(0);
}
/**
* @function goodFeaturesToTrack_Demo.cpp
* @brief Apply Shi-Tomasi corner detector
*/
void goodFeaturesToTrack_Demo( int, void* )
{
if( maxCorners < 1 ) { maxCorners = 1; }
/// Parameters for Shi-Tomasi algorithm
vector<Point2f> corners;
double qualityLevel = 0.01;
double minDistance = 10;
int blockSize = 3;
bool useHarrisDetector = false;
double k = 0.04;
/// Copy the source image
Mat copy;
copy = src.clone();
/// Apply corner detection
goodFeaturesToTrack( src_gray,
corners,
maxCorners,
qualityLevel,
minDistance,
Mat(),
blockSize,
useHarrisDetector,
k );
/// Draw corners detected
cout<<"** Number of corners detected: "<<corners.size()<<endl;
int r = 4;
for( size_t i = 0; i < corners.size(); i++ )
{ circle( copy, corners[i], r, Scalar(rng.uniform(0,255), rng.uniform(0,255), rng.uniform(0,255)), -1, 8, 0 ); }
/// Show what you got
namedWindow( source_window, WINDOW_AUTOSIZE );
imshow( source_window, copy );
}
/**
*@function goodFeaturesToTrack\u Demo.cpp
*@使用Shi-Tomasi方法检测角点的简要演示代码
*@author-OpenCV团队
*/
#包括“opencv2/highgui/highgui.hpp”
#包括“opencv2/imgproc/imgproc.hpp”
#包括
#包括
#包括
使用名称空间cv;
使用名称空间std;
///全局变量
Mat src,src_灰色;
int=23;
int maxTrackbar=100;
RNG RNG(12345);
const char*source_window=“Image”;
///函数头
void goodFeaturesToTrack_Demo(int,void*);
/**
*@主功能
*/
int main(int,字符**argv)
{
///加载源图像并将其转换为灰色
src=imread(argv[1],1);
CVT颜色(src、src_灰、颜色_BGR2灰);
///创建窗口
namedWindow(源窗口,窗口自动大小);
///创建轨迹栏以设置角数
createTrackbar(“最大转角:”,源窗口和最大转角,最大轨迹栏,良好特性跟踪演示);
imshow(源窗口,src);
良好特性跟踪演示(0,0);
等待键(0);
返回(0);
}
/**
*@function goodFeaturesToTrack\u Demo.cpp
*@brief-Apply-Shi-Tomasi角探测器
*/
void goodFeaturesToTrack\u Demo(int,void*)
{
如果(maxCorners<1){maxCorners=1;}
///Shi-Tomasi算法的参数
矢量角点;
双质量水平=0.01;
双心距=10;
int blockSize=3;
bool-usehrisdetector=false;
双k=0.04;
///复制源图像
复印件;
copy=src.clone();
///应用角点检测
良好的跟踪特性(src_gray,
角,
马克斯角,
质量等级,
心灵距离,
Mat(),
块大小,
使用HarrisDetector,
k);
///绘制检测到的角点
cout探测器goodFeaturesToTrack(实际上是所有的特征探测器)填充特征向量,而您正试图将特征向量传递给它。代码的其余部分看起来不错,但您应该更改行
std::vector<std::vector<cv::Point2f>> corners;
std::向量角点;
到
std::向量角点;
希望一切都会好起来。检测器goodFeaturesToTrack(实际上是所有的特征检测器)填充一个特征向量,而您正试图将一个特征向量传递给它。代码的其余部分看起来不错,但您应该更改行
std::vector<std::vector<cv::Point2f>> corners;
std::向量角点;
到
std::向量角点;
希望一切都会好起来。您是否通过引用传递角点
?如果是通过值传递,则它甚至不会进入循环。请尝试调试what角点的值。size()
是。问题是在idx检索cv::Point…我正在进入循环,但我无法访问右角点。我将提供更详细的输入,当我在办公室时,您是否通过引用传递角点
?如果是通过值,则它甚至不会进入循环。尝试调试角点的值。size()
是。问题在于检索idx处的cv::Point…我正在进入循环,但无法访问右角点。我将提供更详细的输入,当我在办公室时提供的链接要求验证,我们需要注册才能看到代码?请在此处发布示例。感谢您捕捉到这一点!我已更新了链接,并为后代发布了代码。提供的链接要求进行身份验证,我们需要注册才能看到代码?请在此处发布示例。感谢ca