Run YoloV3 detections on thousands of images and save outputs?

[austinmw]

I've only figured out how to run detections on one image at a time, typing a new image filename each time. Is there any build-in way to run on an entire folder of images and save images with predictions to another folder?

[AlexeyAB]

Using this fork: https://github.com/AlexeyAB/darknet
you can use this command:
./darknet detector test data/voc.data yolo-voc.cfg yolo-voc.weights -dont_show < data/train.txt > result.txt

in the file data/train.txt you should have paths to images
in the file result.txt will be results of detections

[austinmw]

Thanks for the reply. does that work with YoloV3 config files? edit: looks like it should, gonna try now!

[AlexeyAB]

@austinmw Yes.
For Yolo v3:
./darknet detector test ./cfg/coco.data ./cfg/yolov3.cfg ./yolov3.weights -dont_show < data/train.txt > result.txt

[austinmw]

Thanks. Does this actually save images with bounding boxes overlaid or only save bounding box info into a txt file? Trying to piece the separate detection images into a video as my build is freezing when trying to pass videos

[AlexeyAB]

It only saves bounding box info into a txt file

[austinmw]

Ah ok, happen to know any way to save prediction images like ./darknet detect only with multiple images?

[surajitkundu29]

@austinmw did you get the way to save the images instead of only text file

[worldmovers]

@AlexeyAB I am using darknet fork from the yolo website. I have already trained my model on yolov3 . Now I want to make prediction on a folder . I tried using this
./darknet detector test data/voc.data yolo-voc.cfg yolo-voc.weights -dont_show < data/train.txt > result.txt
but that's not working. Can you please help me

[austinmw]

@surajitkundu29 I didn't find an option directly. One workaround is that it will save bounding boxes over video output. So what you could do is combine your images (if they are the same size) into a video, run detection on the video, then split them back up.

[AlexeyAB]

@worldmovers Try to use this fork for detection: https://github.com/AlexeyAB/darknet

[mhusseinsh]

@AlexeyAB Is there a way to save output images with bounding boxes in a different folder ?
I have a directory with thousands of input images, and I created an input.txt path for the images, and I am passing them in the command, but the output is always overriden for each frame on predictions.png
I need to save multiple outputs
what can I do ?

[PeterQuinn925]

Mostafa, Write yourself a little bit of python to call Darknet and you do do whatever you want with the pictures. Example here: PeterQuinn925/Squirrel@d514aa2

On Mon, Jul 30, 2018 at 1:49 AM Mostafa Hussein ***@***.***> wrote: @AlexeyAB <https://github.com/AlexeyAB> Is there a way to save output images with bounding boxes in a different folder ? I have a directory with thousands of input images, and I created an input.txt path for the images, and I am passing them in the command, but the output is always overriden for each frame on predictions.png I need to save multiple outputs what can I do ? — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#723 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/ARocJbKTi38A63u87I0E3SvSYVWJcisKks5uLsivgaJpZM4Ten8t> .

-- Peter Quinn (415) 794-2264 (cell)

[mhusseinsh]

@PeterQuinn925
I already did a little bash, which performs the images one by one, but the problem which i am facing now, is that each time, the image is saved as predictions.png, so it is always overwritten

and I am trying to find a way to avoid that

here is how I do it
cat imagenames.txt | ./darknet detect cfg/yolov3.cfg yolov3.weights