Darknet: Erro:Loading weights from yolov31.weights...Couldn't open file: yolov31.weights

[Niuxiaotong]

Rrecently,study object detection,hope to use to arrange Yolov3 on Ubuntu1604 in the virtual machine.

However,appear some Erro, make me in troble,hope to give some tips!

Envirnment :PC configure：Core（TM）i5-4200 CPU
Running Env: virtual machine14 、Ubuntu1604、
Aim :arrange Yolov3 on Ubuntu1604 in the virtual machine.

Time:20181123:17:20

step:
1、git clone https://github.com/pjreddie/darknet
2、cd darknet
make
3、wget https://pjreddie.com/media/files/yolov3.weights

4、./darknet detect cfg/yolov3.cfg yolov3.weights data/dog.jpg

ERRO：
nxt001@ubuntu:/opt/darknet$ ./darknet detect cfg/yolov3.cfg yolov31.weights data/dog.jpg
layer filters size input output
0 conv 32 3 x 3 / 1 608 x 608 x 3 -> 608 x 608 x 32 0.639 BFLOPs
1 conv 64 3 x 3 / 2 608 x 608 x 32 -> 304 x 304 x 64 3.407 BFLOPs
2 conv 32 1 x 1 / 1 304 x 304 x 64 -> 304 x 304 x 32 0.379 BFLOPs
3 conv 64 3 x 3 / 1 304 x 304 x 32 -> 304 x 304 x 64 3.407 BFLOPs
4 res 1 304 x 304 x 64 -> 304 x 304 x 64
5 conv 128 3 x 3 / 2 304 x 304 x 64 -> 152 x 152 x 128 3.407 BFLOPs
6 conv 64 1 x 1 / 1 152 x 152 x 128 -> 152 x 152 x 64 0.379 BFLOPs
7 conv 128 3 x 3 / 1 152 x 152 x 64 -> 152 x 152 x 128 3.407 BFLOPs
......
98 route 97 36
99 conv 128 1 x 1 / 1 76 x 76 x 384 -> 76 x 76 x 128 0.568 BFLOPs
100 conv 256 3 x 3 / 1 76 x 76 x 128 -> 76 x 76 x 256 3.407 BFLOPs
101 conv 128 1 x 1 / 1 76 x 76 x 256 -> 76 x 76 x 128 0.379 BFLOPs
102 conv 256 3 x 3 / 1 76 x 76 x 128 -> 76 x 76 x 256 3.407 BFLOPs
103 conv 128 1 x 1 / 1 76 x 76 x 256 -> 76 x 76 x 128 0.379 BFLOPs
104 conv 256 3 x 3 / 1 76 x 76 x 128 -> 76 x 76 x 256 3.407 BFLOPs
105 conv 255 1 x 1 / 1 76 x 76 x 256 -> 76 x 76 x 255 0.754 BFLOPs
106 yolo

Loading weights from yolov31.weights...Couldn't open file: yolov31.weights

Ps:
1、nxt001@ubuntu:/opt/darknet$ ls
backup darknet examples libdarknet.a LICENSE LICENSE.gen LICENSE.meta LICENSE.v1 obj README.md scripts
cfg data include libdarknet.so LICENSE.fuck LICENSE.gpl LICENSE.mit Makefile python results src
2、nxt001@ubuntu:/opt/darknet/cfg$ ls
.... yolov3.cfg
yolov3.weights ....
3、 vim Makefile (no modify)
GPU=0
CUDNN=0
OPENCV=0
OPENMP=0
DEBUG=0

ARCH= -gencode arch=compute_30,code=sm_30
-gencode arch=compute_35,code=sm_35
-gencode arch=compute_50,code=[sm_50,compute_50]
-gencode arch=compute_52,code=[sm_52,compute_52]

-gencode arch=compute_20,code=[sm_20,sm_21] This one is deprecated?

This is what I use, uncomment if you know your arch and want to specify

ARCH= -gencode arch=compute_52,code=compute_52

VPATH=./src/:./examples
SLIB=libdarknet.so
ALIB=libdarknet.a
EXEC=darknet
OBJDIR=./obj/

CC=gcc
CPP=g++
NVCC=nvcc
AR=ar
ARFLAGS=rcs
OPTS=-Ofast
LDFLAGS= -lm -pthread
COMMON= -Iinclude/ -Isrc/
CFLAGS=-Wall -Wno-unused-result -Wno-unknown-pragmas -Wfatal-errors -fPIC

.......

[PeterQuinn925]

The error msg says it can't open yolov31.weights. Do you have this file? The command line shows
you're using yolov3.weights. Something's not right here.

[Niuxiaotong]

The error msg says it can't open yolov31.weights. Do you have this file? The command line shows
you're using yolov3.weights. Something's not right here.

Frist,thanks for your rely. In fact, this file(yolov3.weights) exist in the /opt/darknet/cfg
nxt001@ubuntu:/opt/darknet/cfg$ ls
.... yolov3.cfg
yolov3.weights ....

[PeterQuinn925]

Yeah, but the error msg you posted says it's looking for yolov31.cfg. That's kind of odd.

[Niuxiaotong]

Yeah, but the error msg you posted says it's looking for yolov31.cfg. That's kind of odd.

yea,I try to take some ways to solve it

[dafeigediaozhatian]

I have meet same problem. But its easy to solve.
I think you should make same mistake with me,just put yolov3.weights file into /cfg.
You should put weights file in /darknet, and you can solve it!

[Niuxiaotong]

I have meet same problem. But its easy to solve.
I think you should make same mistake with me,just put yolov3.weights file into /cfg.
You should put weights file in /darknet, and you can solve it!
yea,it is a same mistake with you, , according to you ,be solved,thanke you

[ottovotto]

same problem here --> solved by putting yolov3.weights in /darknet

[orcund]

Be sure about the path of your weights file, had the same problem and in my case reason was the path to weights.

[Aaayue]

same problem here!
I changed the running command to :
./darknet detect cfg/yolov3.cfg cfg/yolov3.weights data/dog.jpg
add /cfg in front of yolov3.weights, everything fine!

[saangaa]

Incorrect path can lead to this problem.

[vkrytpo]

The error msg says it can't open yolov31.weights. Do you have this file? The command line shows
you're using yolov3.weights. Something's not right here.

Frist,thanks for your rely. In fact, this file(yolov3.weights) exist in the /opt/darknet/cfg
nxt001@ubuntu:/opt/darknet/cfg$ ls
.... yolov3.cfg
yolov3.weights ....

actually yolov3.weights must be within folder, in your case it's outside the folder....yeahh i did same mistake too.

[puttapraneeth]

Have placed weights in right path but issue persists in windows 10. Please help

Command: darknet_no_gpu.exe detector test cfgcoco.data cfgyolov3.cfg yolov3.weights datatest-image.jpg

Loading weights from yolov3.weights...Couldn't open file: yolov3.weights

[ammu-007]

Download it from here:
https://pjreddie.com/media/files/yolov3.weights
Then move it to /darknet

[sandheepgopinath]

Have placed weights in right path but issue persists in windows 10. Please help

Command: darknet_no_gpu.exe detector test cfgcoco.data cfgyolov3.cfg yolov3.weights datatest-image.jpg

Loading weights from yolov3.weights...Couldn't open file: yolov3.weights

Have placed weights in right path but issue persists in windows 10. Please help

Command: darknet_no_gpu.exe detector test cfgcoco.data cfgyolov3.cfg yolov3.weights datatest-image.jpg

Loading weights from yolov3.weights...Couldn't open file: yolov3.weights

Hi,

I was also facing the same issue. There are two darknet folders which might be causing the confusion.
I was placing the images and weights inside /darknet initially and i was getting the error.
It should be placed inside darknet/build/darknet/x64/weights.

And it worked for me.