1.OpenCV1
IplImage* img=cvLoadImage("D:\\road.jpg");
cvNamedWindow("image",CV_WINDOW_AUTOSIZE);
cvShowImage("image",img);
cvWaitKey(0);
2.OpenCV2
Mat img=imread("D:\\road.jpg");
imshow("顯示",img);
waitKey(0);
rectangle(dst, Point(left,top), Point(right, bot), CV_RGB(255, 255, 0), 1, 8, 0);
cvtColor(matFrame2,left,CV_BGR2GRAY);
Mat left(480,640,CV_8UC1);
Mat a=Mat::zeros(480,640,CV_8UC3);
resize(l,l1,l1.size);
cvtColor(matFrame2,left,CV_BGR2GRAY);
imwrite("r.jpg",matFrame1);
outputImage.at<Vec3b>(i,j)[0] = outputImage.at<Vec3b>(i,j)[0]/div*div + div/2;
putText(dst,"hello",Point(left,top+10),FONT_HERSHEY_SIMPLEX,0.4,Scalar(0,0,0),1,1);
circle(output, Point2f(640/2,987/2), 8, Scalar(0, 255, 0), -1, 8);
rectangle(dst, Point(left,top), Point(right, bot), CV_RGB(255, 255, 255), 1, 8, 0);
little.copyTo(img_out(Rect(0,0,128,96)));
vector<vector<Point2f>> imgPoints;imgPoints= vector<vector<Point2f>>(4);//容器初始化
//---<通道合併>---//
Mat rgbChannels;
vector<Mat> rgbChannels_r;
rgbChannels_r.push_back(img_gray);
rgbChannels_r.push_back(img_gray);
rgbChannels_r.push_back(img_gray);
merge(rgbChannels_r,rgbChannels);
//--->通道合併<---//
//---<保存視頻>---//
static VideoWriter writer("/home/leon/Downloads/Video.avi", CV_FOURCC('M', 'J', 'P', 'G'), 15.0, Size(bigImg.cols,bigImg.rows));
writer << big;
writer.release();
//--->保存視頻<---//
3.C++
memset(buf, 0, sizeof(buf));
memcpy(bufb,buff,sizeof(bufb));
MyPicProcess *picprocess0=new MyPicProcess();
long t_start=GetTickCount();//獲得系統運行時間,毫秒
int b=(int)(a+0.5);//四捨五入
//---<讀txt>---//
#include <fstream>
ifstream infile;
int frame;
infile.open("F:\\TestProject\\33.txt");
infile>>frame;
infile.close();
//--->讀txt<---//
//---<寫txt>---//
int frame=1;
FILE* fpss=fopen("F:\\TestProject\\\\1.txt","a");
fprintf(fpss,"%d ",frame);
fprintf(fpss,"\r\n");
fclose(fpss);
//--->寫txt<---//
//---<int高8位和低8位存到uchar+反向>---//
int pix_x=100;
int pix_y=135;
uchar pix_x_c0=pix_x & 0xff;//低8位
uchar pix_x_c1=(pix_x>>8) & 0xff;//高8位
pix_x=pix_x_c1;//高8位
pix_x=pix_x<<8;
pix_x=pix_x_c0;//低8位
//--->int高8位和低8位存到uchar+反向<---//
//---<float轉CString轉String>---//
Mat img=imread("D:\\road.jpg");
float radar_y=1.2;
float radar_speed=2.5;
string ccc;
CString TEMP,TEMP1,TEMP2;
TEMP1.Format(_T("%.2fm"),radar_y);
TEMP2.Format(_T("%.2fm/s"),radar_speed);
TEMP=TEMP1+","+TEMP2;
ccc = CT2A(TEMP.GetBuffer());
putText(img,ccc,Point(100,100),FONT_HERSHEY_SIMPLEX,0.4,Scalar(0,0,0),1,1);//ccc爲String類型
//--->float轉CString轉String<---//
//---<float轉stringstream轉String>---//
using namespace std;
Mat img=imread("D:\\road.jpg");
float radar_y=1.2;
float radar_speed=2.5;
string name1,name2,name;
stringstream s1,s2;
s1<<radar_y;
s1>>name1;
s2<<radar_speed;
s2>>name2;
name=name1+"m,"+name2+"m/s";
putText(img,name,Point(100,100),FONT_HERSHEY_SIMPLEX,0.4,Scalar(0,0,0),1,1);//ccc爲String類型
//--->float轉stringstream轉String<---//
//---<float通過sprintf轉化爲string>---//
Mat img=imread("D:\\road.jpg");
float radar_y=1.2;
float radar_speed=2.5;
char XYK;
sprintf(&XYK,"%.2fm,%.2fm/s",radar_y,radar_speed);
putText(img,&XYK,Point(10,10),FONT_HERSHEY_SIMPLEX,0.4,Scalar(0,0,0),1,1);
//--->float通過sprintf轉化爲string<---//
//---<char*轉CString>---//char*轉string也類似
CString CXYK;
char XYK
CXYK=&XYK;
//--->char*轉CString<---//
//---<String轉char*>---//
string st = "My test";
char *st1 = const_cast<char *>(st.c_str());
//--->String轉char*>---//
//---<String轉CString然後顯示控件文字>---//
CMFCApplication1Dlg *dlg= (CMFCApplication1Dlg *)this;
CString aaa;
CA2T szr((name).c_str());
aaa = (LPCTSTR)szr;
dlg->GetDlgItem(IDC_EDIT1)->SetWindowText(aaa);
//--->String轉CString然後顯示控件文字<---//
//---<互斥鎖>---//
CCriticalSection aaa;
Mat lll;
aaa.Lock();
matFrame1.copyTo(lll);
aaa.Unlock()
//--->互斥鎖<---//
//---<win32創建線程>---//
DWORD WINAPI Thread1(LPVOID lpParameter);
HANDLE hThread1=CreateThread(NULL,0,Thread1,NULL,0,NULL);//啓動一個線程
CloseHandle(hThread1);//關閉一個線程
DWORD WINAPI Thread1(LPVOID lpParameter)
{
return 0;
}
//--->win32創建線程<---//
4.Linux
sudo vim /etc/profile
cp -r aaa bbb #複製文件夾及文件夾內的所有內容:
mkdir build #新建文件夾:
sudo apt-get install exfat-utils #exfat格式U盤讀取
locate lib #查找文件
rm -f .bashrc.swp #bashrc未成功關閉解決辦法
ln -s /home/leon/MyProgram /home/leon/Desktop/LnMyProgram #創建軟連接
sudo apt-get autoremove libboost1.54-dev #刪除當前安裝的boost,注意1.54要對應版本
sudo vim /etc/profile #系統環境變量
sudo chown -R $USER:$USER /home/www #本機和服務器該權限
apt-get -f install
#---<環境變量配置>---#
sudo ldconfig
sudo gedit ~/.bashrc
添加: PATH=/usr/local/protobuf/bin:$PATH
source ~/.bashrc
#--->環境變量配置<---#
%---<Anaconda3使用>---%
conda create -n python36 python=3.6 #創建虛擬環境
source activate python36 #激活虛擬環境
conda info --env #查看環境
python --version #查看版本
source deactivate python36 #返回默認環境
conda remove --name python36 --all #刪除已有環境
%--->Anaconda3使用<---%
%---<查看版本>---%
cat /usr/local/cuda/version.txt #cuda版本
cat /usr/local/cuda/include/cudnn.h | grep CUDNN_MAJOR -A 2 #cudnn版本
pkg-config --modversion opencv #OpenCV版本
whereis protoc #查看哪些路徑安裝了protoc
which protoc #查看默認選用protoc的路徑
protoc --version #查看當前protoc版本
%--->查看版本<---%
%---<deb格式文件安裝>---%
sudo apt-get install -f
sudo dpkg -i deb文件名
%--->deb格式文件安裝<---%
%---<雙系統Windows分區無法查看>---%
sudo fdisk -l #查看分區掛在情況
sudo ntfsfix /dev/sda5 #修復掛在錯誤的分區
%--->雙系統Windows分區無法查看<---%
5.Python
which python #查看python路徑
print("!!! %s" % abs_xml_path)
print('\n' + abs_xml_path)
print(os.path.abspath(os.path.dirname(os.path.dirname(__file__)))) #獲取當前目錄上一級目錄
# ---<遞歸import上一級目錄>---#
import os
import sys
sys.path.append("..")
sys.path.extend([os.path.join(root, name) for root, dirs, _ in os.walk("../") for name in dirs])
# --->遞歸import上一級目錄<---#
import cv2
img = cv2.imread("/media/leon/D/MyImg/face.jpg")
b,g,r = cv2.split(img)
cv2.imshow("SSD", b)
cv2.waitKey(0)
#---<字典和列表寫入json>---#
# coding=UTF-8
import json
nid = "1,2"
print(nid.split(','))
datas = []
for i in nid.split(','):
mydict = {}
mydict["id"] = str(i)
mydict["checked"] = True
datas.append(mydict)
print(str(datas))
test_dict = {"haha":datas}
print(test_dict)
json_str = json.dumps(test_dict)
new_dict = json.loads(json_str)
with open("./record.json","w") as f:
json.dump(new_dict,f)
print("寫入json完成...")
#--->字典和列表寫入json<---#