From a6cbaeecde40f91ddc3ea09aa26a03ab5bbf8ba8 Mon Sep 17 00:00:00 2001 From: AlexeyAB <alexeyab84@gmail.com> Date: Wed, 15 Mar 2017 20:39:18 +0000 Subject: [PATCH] Added support DLL (dynamic link library) - yolo_cpp_dll.dll --- README.md | 81 +++++++++++++++++++++++++++++++++++++--- 1 files changed, 74 insertions(+), 7 deletions(-) diff --git a/README.md b/README.md index d339c22..ac5240a 100644 --- a/README.md +++ b/README.md @@ -4,9 +4,14 @@ 2. [How to compile](#how-to-compile) 3. [How to train (Pascal VOC Data)](#how-to-train-pascal-voc-data) 4. [How to train (to detect your custom objects)](#how-to-train-to-detect-your-custom-objects) -5. [How to mark bounded boxes of objects and create annotation files](#how-to-mark-bounded-boxes-of-objects-and-create-annotation-files) +5. [When should I stop training](#when-should-i-stop-training) +6. [How to improve object detection](#how-to-improve-object-detection) +7. [How to mark bounded boxes of objects and create annotation files](#how-to-mark-bounded-boxes-of-objects-and-create-annotation-files) -|  |  https://arxiv.org/abs/1612.08242 | +|  |  https://arxiv.org/abs/1612.08242 | +|---|---| + +|  |  https://arxiv.org/abs/1612.08242 | |---|---| @@ -69,8 +74,8 @@ 1. Download for Android phone mjpeg-stream soft: IP Webcam / Smart WebCam - Smart WebCam - preferably: https://play.google.com/store/apps/details?id=com.acontech.android.SmartWebCam - IP Webcam: https://play.google.com/store/apps/details?id=com.pas.webcam + * Smart WebCam - preferably: https://play.google.com/store/apps/details?id=com.acontech.android.SmartWebCam2 + * IP Webcam: https://play.google.com/store/apps/details?id=com.pas.webcam 2. Connect your Android phone to computer by WiFi (through a WiFi-router) or USB 3. Start Smart WebCam on your phone @@ -85,6 +90,8 @@ 1. If you have MSVS 2015, CUDA 8.0 and OpenCV 2.4.9 (with paths: `C:\opencv_2.4.9\opencv\build\include` & `C:\opencv_2.4.9\opencv\build\x64\vc12\lib` or `vc14\lib`), then start MSVS, open `build\darknet\darknet.sln`, set **x64** and **Release**, and do the: Build -> Build darknet + 1.1. Find files `opencv_core249.dll`, `opencv_highgui249.dll` and `opencv_ffmpeg249_64.dll` in `C:\opencv_2.4.9\opencv\build\x64\vc12\bin` or `vc14\bin` and put it near with `darknet.exe` + 2. If you have other version of CUDA (not 8.0) then open `build\darknet\darknet.vcxproj` by using Notepad, find 2 places with "CUDA 8.0" and change it to your CUDA-version, then do step 1 3. If you have other version of OpenCV 2.4.x (not 2.4.9) then you should change pathes after `\darknet.sln` is opened @@ -146,7 +153,12 @@ 1. Download pre-trained weights for the convolutional layers (76 MB): http://pjreddie.com/media/files/darknet19_448.conv.23 and put to the directory `build\darknet\x64` -2. Download The Pascal VOC Data and unpack it to directory `build\darknet\x64\data\voc`: http://pjreddie.com/projects/pascal-voc-dataset-mirror/ will be created file `voc_label.py` and `\VOCdevkit\` dir +2. Download The Pascal VOC Data and unpack it to directory `build\darknet\x64\data\voc` will be created dir `build\darknet\x64\data\voc\VOCdevkit\`: + * http://pjreddie.com/media/files/VOCtrainval_11-May-2012.tar + * http://pjreddie.com/media/files/VOCtrainval_06-Nov-2007.tar + * http://pjreddie.com/media/files/VOCtest_06-Nov-2007.tar + + 2.1 Download file `voc_label.py` to dir `build\darknet\x64\data\voc`: http://pjreddie.com/media/files/voc_label.py 3. Download and install Python for Windows: https://www.python.org/ftp/python/3.5.2/python-3.5.2-amd64.exe @@ -231,15 +243,70 @@ * After each 1000 iterations you can stop and later start training from this point. For example, after 2000 iterations you can stop training, and later just copy `yolo-obj_2000.weights` from `build\darknet\x64\backup\` to `build\darknet\x64\` and start training using: `darknet.exe detector train data/obj.data yolo-obj.cfg yolo-obj_2000.weights` - * Also you can get result earlier than all 45000 iterations, for example, usually sufficient 2000 iterations for each class(object). I.e. for 6 classes to avoid overfitting - you can stop training after 12000 iterations and use `yolo-obj_12000.weights` to detection. + * Also you can get result earlier than all 45000 iterations. +## When should I stop training: + +Usually sufficient 2000 iterations for each class(object). But for a more precise definition when you should stop training, use the following manual: + +1. During training, you will see varying indicators of error, and you should stop when no longer decreases **0.060730 avg**: + + > Region Avg IOU: 0.798363, Class: 0.893232, Obj: 0.700808, No Obj: 0.004567, Avg Recall: 1.000000, count: 8 + > Region Avg IOU: 0.800677, Class: 0.892181, Obj: 0.701590, No Obj: 0.004574, Avg Recall: 1.000000, count: 8 + > + > **9002**: 0.211667, **0.060730 avg**, 0.001000 rate, 3.868000 seconds, 576128 images + > Loaded: 0.000000 seconds + + * **9002** - iteration number (number of batch) + * **0.060730 avg** - average loss (error) - **the lower, the better** + + When you see that average loss **0.060730 avg** enough low at many iterations and no longer decreases then you should stop training. + +2. Once training is stopped, you should take some of last `.weights`-files from `darknet\build\darknet\x64\backup` and choose the best of them: + +For example, you stopped training after 9000 iterations, but the best result can give one of previous weights (7000, 8000, 9000). It can happen due to overfitting. **Overfitting** - is case when you can detect objects on images from training-dataset, but can't detect ojbects on any others images. You should get weights from **Early Stopping Point**: + + + + 2.1. At first, you should put filenames of validation images to file `data\voc.2007.test` (format as in `train.txt`) or if you haven't validation images - simply copy `data\train.txt` to `data\voc.2007.test`. + + 2.2 If training is stopped after 9000 iterations, to validate some of previous weights use this commands: + +* `darknet.exe detector recall data/obj.data yolo-obj.cfg backup\yolo-obj_7000.weights` +* `darknet.exe detector recall data/obj.data yolo-obj.cfg backup\yolo-obj_8000.weights` +* `darknet.exe detector recall data/obj.data yolo-obj.cfg backup\yolo-obj_9000.weights` + +And comapre last output lines for each weights (7000, 8000, 9000): + +> 7586 7612 7689 RPs/Img: 68.23 **IOU: 77.86%** Recall:99.00% + +* **IOU** - the bigger, the better (says about accuracy) - **better to use** +* **Recall** - the bigger, the better (says about accuracy) + +For example, **bigger IUO** gives weights `yolo-obj_8000.weights` - then **use this weights for detection**. + + + + ### Custom object detection: -Example of custom object detection: `darknet.exe detector test data/obj.data yolo-obj.cfg yolo-obj_3000.weights` +Example of custom object detection: `darknet.exe detector test data/obj.data yolo-obj.cfg yolo-obj_8000.weights` |  |  | |---|---| +## How to improve object detection: + +1. Before training: + * set flag `random=1` in your `.cfg`-file - it will increase precision by training Yolo for different resolutions: [link](https://github.com/AlexeyAB/darknet/blob/47409529d0eb935fa7bafbe2b3484431117269f5/cfg/yolo-voc.cfg#L244) + +2. After training - for detection: + + * Increase network-resolution by set in your `.cfg`-file (`height=608` and `width=608`) or (`height=832` and `width=832`) or (any value multiple of 32) - this increases the precision and makes it possible to detect small objects: [link](https://github.com/AlexeyAB/darknet/blob/47409529d0eb935fa7bafbe2b3484431117269f5/cfg/yolo-voc.cfg#L4) + + * you do not need to train the network again, just use `.weights`-file already trained for 416x416 resolution + * if error `Out of memory` occurs then in `.cfg`-file you should increase `subdivisions=16`, 32 or 64: [link](https://github.com/AlexeyAB/darknet/blob/47409529d0eb935fa7bafbe2b3484431117269f5/cfg/yolo-voc.cfg#L3) + ## How to mark bounded boxes of objects and create annotation files: Here you can find repository with GUI-software for marking bounded boxes of objects and generating annotation files for Yolo v2: https://github.com/AlexeyAB/Yolo_mark -- Gitblit v1.10.0