Comments (2)
for example (both images are without animals):
from cameratraps.
Thanks for your interest in MegaDetector!
There isn't really a way to fine-tune MegaDetector on your data. In theory, you could draw bounding boxes on lots of animals on your own images, and use the checkpoint that we provide to resume training, but this would be a lot of work, and I don't have high expectations for the results. AFAIK no one has done this.
If you want to train a model to handle of some of those false positives, I would recommend a slightly different approach, where you crop all the high-confidence detections from MegaDetector into separate (small) images, label them as animal/false-trigger, and train a new image classifier with just those two classes. I think that would work pretty well, especially if you are training a model to handle just a specific set of cameras.
All of that said... in our experience, this isn't usually worth it. There are always some false detections, and if they are very infrequent relative to the number of empty images you have, it may not be worth all the hassle of a new machine learning project. So before you start on any training, I would take a look at the total number of images you have, the % of blanks, and the % of MD false positives, and decide whether it's really worth the effort of training a new model.
I would also take a look at this process, which we call "repeat detection elimination". It's a semi-automated process that makes it very quick to get rid of all of those rocks/sticks/etc. in a MegaDetector results set. It's a little bit of an art form and it takes some practice, so there's a learning curve, and I only recommend overcoming that learning curve when you have lots of detections like this, but it can be very efficient when you get the hang of it.
Hope that helps!
-Dan
from cameratraps.
Related Issues (20)
- PytorchStreamReader failed reading zip archive HOT 5
- No tensor arguments when running Batch Image Detection on own photos and output image color mismatch. HOT 7
- Add Bio-accoustics support HOT 3
- Generate Spectrograms from audio files HOT 1
- Torch Dependency Resolution problem in Pip HOT 10
- Metadata generation fails during pip install HOT 1
- Windows install documentation correction HOT 1
- Detection JSON file formatted in one line HOT 3
- Exclude label categories from export HOT 3
- pw_utils.save_detection_images() cannot save into a non-empty folder HOT 2
- MegaDetectorV6 release HOT 6
- Problem loading detection model HOT 1
- Memory problems when batch classifying large directories HOT 10
- Only save results with a given confidence percentage or above HOT 1
- ### _****_
- Datasets Details HOT 1
- Implementing Oriented Bounding Box feature HOT 1
- Training own weights on windows HOT 1
- can not install yolov5
- I can't save the crop image HOT 1
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from cameratraps.