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# go-darknet: Go bindings for Darknet
### This is fork of go-darknet https://github.com/gyonluks/go-darknet applied to FORK of Darknet https://github.com/AlexeyAB/darknet
[![GoDoc](https://godoc.org/github.com/LdDl/go-darknet?status.svg)](https://godoc.org/github.com/LdDl/go-darknet)
go-darknet is a Go package, which uses Cgo to enable Go applications to use YOLO in [Darknet].
# go-darknet: Go bindings for Darknet
## go-darknet is a Go package, which uses Cgo to enable Go applications to use YOLO in [Darknet].
### Since this repository https://github.com/gyonluks/go-darknet is no longer maintained I decided to move on and make little different bindings for Darknet.
### This bindings aren't for [official implementation](https://github.com/pjreddie/darknet) but for [AlexeyAB's fork](https://github.com/AlexeyAB/darknet).
## Table of Contents

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This is an example Go application which uses go-darknet.
## Install
```shell
go get github.com/LdDl/go-darknet
go install github.com/LdDl/go-darknet/example
# Alternatively
go build github.com/LdDl/go-darknet/example
```
An executable named `example` should be in your `$GOPATH/bin`, if using
`go install`; otherwise it will be in your current working directory (`$PWD`),
if using `go build`.
## Run
Navigate to example folder:
```shell
$GOPATH/bin/example
cd $GOPATH/github.com/LdDl/go-darknet/example
```
or
```go
go run main.go -configFile=yolov3-320.cfg -dataConfigFile=coco.data -imageFile=sample.jpg -weightsFile=yolov3.weights
Download dataset (sample of image, coco.names, yolov3.cfg, yolov3.weights).
```shell
./download_data.sh
```
Note: you don't need *coco.data* file anymore, because script below does insert *coco.names* into 'names' filed in *yolov3.cfg* file (so AlexeyAB's fork can deal with it properly)
So last rows in yolov3.cfg file will look like:
```bash
......
[yolo]
mask = 0,1,2
anchors = 10,13, 16,30, 33,23, 30,61, 62,45, 59,119, 116,90, 156,198, 373,326
classes=80
num=9
jitter=.3
ignore_thresh = .7
truth_thresh = 1
random=1
names = coco.names # this is path to coco.names file
```
Please ensure that `libdarknet.so` is in your `$LD_LIBRARY_PATH`.
## Notes
Build and run program
```
go build main.go && ./main --configFile=yolov3.cfg --weightsFile=yolov3.weights --imageFile=sample.jpg
```
Note that the bounding boxes' values are ratios. To get the actual values, use
the ratios and multiply with either the image's width or height, depending on
which ratio is used.
Output should be something like this:
```shell
truck (7): 49.5197% | start point: (0,136) | end point: (85, 311)
car (2): 36.3747% | start point: (95,152) | end point: (186, 283)
truck (7): 48.4384% | start point: (95,152) | end point: (186, 283)
truck (7): 45.6590% | start point: (694,178) | end point: (798, 310)
car (2): 76.8379% | start point: (1,145) | end point: (84, 324)
truck (7): 25.5731% | start point: (107,89) | end point: (215, 263)
car (2): 99.8783% | start point: (511,185) | end point: (748, 328)
car (2): 99.8194% | start point: (261,189) | end point: (427, 322)
car (2): 99.6408% | start point: (426,197) | end point: (539, 311)
car (2): 74.5610% | start point: (692,186) | end point: (796, 316)
car (2): 72.8053% | start point: (388,206) | end point: (437, 276)
bicycle (1): 72.2932% | start point: (178,270) | end point: (268, 406)
person (0): 97.3026% | start point: (143,135) | end point: (268, 343)
```