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一、下载yolo项目:
https://github.com/AlexeyAB/darknet(C++版本)
二、多GPU配置C++版本的yolo
修改makefile文件如下:
GPU=1
CUDNN=1
CUDNN_HALF=1
OPENCV=1
AVX=0
OPENMP=0
LIBSO=1
DEBUG=1
三、编译C++版本
遇到的bug1:
/bin/sh: 1: nvcc: not found
Makefile:88: recipe for target 'obj/convolutional_kernels.o' failed
make: *** [obj/convolutional_kernels.o] Error 127
错误原因:nvcc没有安装或者是设置的环境变量不生效
解决方案:在/et/profile中添加cuda的环境变量,添加完成之后切记source /etc/profile
参考文章:
https://blog.csdn.net/chengyq116/article/details/80552163
遇到的bug2:
错误原因:opencv版本不匹配
解决方案:编译c++版的yolo必须要装低于3.4.0版本的opencv ;如果电脑上已经装好其他版本的opencv,只需要重新编译所需要的opencv版本即可,然后在执行训练或其他命令之前执行export LD_LIBRARY PATH=$LD_LIBRARY_PATH:/data/opencv-3.4.0/build/lib,但是不能用sudo执行命令
bug3:
错误原因:安装完opencv时没有将opencv路径写入环境变量
解决方案:添加opencv环境变量
参考文章:
https://blog.csdn.net/u013066730/article/details/79411767(从第9步开始执行就行)
错误原因:显存不足
解决方案:将.cfg文件中的subdivision设置为64
四、标记自己的数据及训练
训练数据:./darknet detector train data/obj.data data/yolov3-tiny_test.cfg yolov3-tiny.conv.15 -gpus 0,1,2
计算锚点:./darknet detector calc_anchors data/obj.data -num_of_clusters 6 -width 416 -height 416
断点续传:./darknet detector train data/obj.data data/yolov3-tiny_test.cfg /backup/yolov3-tiny_train_1000.weights -gpus 0,1,2
不显示训练的loss变化的图像时用以下红框的语句
五、测试自己的数据
测试单张图像命令:./darknet detector test data/obj.data data/yolov3-tiny_test.cfg backup/yolov3-tiny_final.weights -i 0 -thresh 0.25 /data/0.jpg(-thresh为设置置信度阈值,默认为0.25)
批量测试文件夹中所有图像:./darknet detector test data/obj.data data/yolov3-tiny_test.cfg backup/yolov3-tiny_final.weights -i 0 -thresh 0.25<test.txt
计算map命令:./darknet detector map data/obj.data data/yolov3-tiny_test.cfg backup/yolov3-tiny_final.weights
六、训练灰度图
https://blog.csdn.net/kbdavid/article/details/81533096
七、cudnn下载地址:
https://developer.nvidia.com/rdp/cudnn-download
八、安装opencv:
https://blog.csdn.net/weixin_42652125/article/details/81238508(安装opencv时一定要把相关依赖全都安装上,否则在执行完cmake之后会报配置错误)
opencv安装注意事项:
1、ubuntu18.04必须安装 libjasper-dev
https://blog.csdn.net/weixin_41053564/article/details/81254410(参考文章)
https://blog.csdn.net/qq_24878901/article/details/82382895
2、cuda10编译opencv时可能会报错,错误如下:
解决方案:将CMAKE命令改写为:cmake -D CMAKE_BUILD_TYPE=Release -D BUILD_opencv_cudacodec=OFF -D CMAKE_INSTALL_PREFIX=/usr/local ..
参考文章:
https://www.cnblogs.com/rabbull/p/11154997.html
https://blog.csdn.net/u012370185/article/details/86364091
九、yolov3-tiny训练时loss一直不收敛的原因:
训练集数据有误
十、在CPU上的vs2015下用opencv部署yolo的模型时注意应该设置net.setPreferableTarget为CPU:
Net net = readNetFromDarknet(modelConfiguration, modelWeights);
net.setPreferableBackend(DNN_BACKEND_OPENCV);
net.setPreferableTarget(DNN_TARGET_CPU);
十一、windows下的CPU版本的darknet的编译与运行
本人配置的opencv属性如下图:
注意:链接器中的pthreadVC2.lib不能删除,否则会报错!
https://blog.csdn.net/tigerda/article/details/73226441#commentsedit
十二、修改detector.c的test_detector()函数实现批测试保存图片
void test_detector(char *datacfg, char *cfgfile, char *weightfile, char *filename, float thresh,
float hier_thresh, int dont_show, int ext_output, int save_labels, char *outfile)
修改该函数中的画红线的部分,使用的测试命令为:
darknet_no_gpu.exe detector test fpdm/CTPN.data fpdm/yolov3-tiny_jiao_test.cfg fpdm/yolov3-tiny_jiao_30000.weights -i 0 -thresh 0.01<fpdm/all.txt
备注:实现批测试保存的核心在于修改save_image()的保存图片的路径!!!
十三、超参数理解
https://blog.csdn.net/julialove102123/article/details/78436644
十四、yolo训练时对图像做resize的操作如下:
在测试时直接用随便拿原图测试效果并不理想!
改进方案:如果测试时的cfg文件中的宽高设置为608*608,则应该对原图进行以较长的一边缩放为608,较短的一边以原图的宽高比进行缩放,然后再进行测试!
案例如下:
原图
不做改进的检测结果
按以上方案进行改进的缩放图像如下:
对改进的图像进行检测的结果如下:
对改进的图像的检测结果
对比两种效果,明显第二种更好!!!原因不详!!!敬请指教!!!
处理代码:
#include <fstream>
#include <sstream>
#include <iostream>
#include <stdlib.h>
#include<io.h> //_finddata_t所在库函数
#include <opencv2/imgproc.hpp>
#include <opencv2/highgui.hpp>
#define FLODER "E:\\样本库\\卷票\\3月\\"
;
using namespace cv;
using namespace std;
bool GetFolderFileYolo(const string FloderPath, vector<string>& FileName, string subDir = "");
void pad_img(Mat& img, int width = 40, int height = 32, bool horizontal = true);
Mat pad_img_to_square(Mat img);
float resize_img(Mat src, Mat& dst,int target_size = 608);
int main()
{
Mat src=imread("D:\\OpenCV\\VIN_all\\result_comper\\LBELMBNCXAY015167.jpg");
Mat dst;
float scale= resize_img(src, dst,608);
cout << "main_scale:" << scale << endl;
line(dst, Point(118,229), Point(555, 203), Scalar(190, 90, 90), 2);
line(dst, Point(555, 203), Point(555, 238), Scalar(190, 90, 90), 2);
line(dst, Point(555, 238), Point(118, 263), Scalar(190, 90, 90), 2);
line(dst, Point(118, 263), Point(118, 229), Scalar(190, 90, 90), 2);
int x1 = 118 / scale;
int y1 = 229 / scale;
int x2 = 555 / scale;
int y2 = 203 / scale;
int x3 = 555 / scale;
int y3 = 238 / scale;
int x4 = 118 / scale;
int y4 = 263 / scale;
line(src, Point(x1, y1), Point(x2, y2), Scalar(190, 90, 90), 2);
line(src, Point(x2, y2), Point(x3, y3), Scalar(190, 90, 90), 2);
line(src, Point(x3, y3), Point(x4, y4), Scalar(190, 90, 90), 2);
line(src, Point(x4, y4), Point(x1, y1), Scalar(190, 90, 90), 2);
//line(src, Point(300, 300), Point(758, 300), Scalar(89, 90, 90), 3);
imshow("src", src);
imshow("i", dst);
imwrite("D:\\OpenCV\\VIN_all\\result_comper\\resize_padding\\LBELMBNCXAY015167.jpg",dst);
waitKey(0);
}
return 0;
}
float resize_img(Mat src,Mat& dst,int target_size)
{
Mat ResImg;
int width = src.cols;
int height = src.rows;
int mx = max(height, width);
float scale = target_size / (mx*1.0);
cout << "scale:" << scale << endl;
Size new_size = Size(int(scale*width), int(scale*height));
resize(src, ResImg, new_size, INTER_CUBIC);
dst=pad_img_to_square(ResImg);
return scale;
}
Mat pad_img_to_square(Mat img)
{
bool horizontal = true;
int len_shortage = 0;
int width = img.cols;
int height = img.rows;
if (width < height) //如果宽小于高则高不变进行横向扩充,否则宽不变进行纵向扩充
{
horizontal = true;
len_shortage = height-width;
pad_img(img,len_shortage,height,horizontal);
}
else
{
horizontal = false;
len_shortage = width-height;
pad_img(img, width, len_shortage, horizontal);
}
return img;
}
void pad_img(Mat& img, int width, int height, bool horizontal) {
/*cout << img.dims;*/
assert(img.dims == 2);
if (horizontal) {
height = img.size[0];
Mat padding(height, width, CV_8UC3, cv::Scalar(255, 255, 255));
cv::hconcat(img, padding, img);
}
else {
width = img.size[1];
Mat padding(height, width, CV_8UC3, cv::Scalar(255, 255, 255));
cv::vconcat(img, padding, img);
}
}
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