Wider-Yolo Kutuphanesinin Kullanimi

1. Wider Face Veri Setini Indir

• Train Dataset
• Val Dataset
• Test Dataset

Not: Indirilen veri setini ismini degistirmeden wider_data klasorun icine atın.

2. Dosya Düzeni:

datasets/ 
      wider_face_split/  
          - wider_face_train_bbx_gt.txt
          - wider_face_val_bbx_gt.txt
         
      WIDER_train/
         - images

      WIDER_train_annotations 

      WIDER_val
         - images

      WIDER_val_annotations

Not: WIDER_train_annotations ve WIDER_val_annotations klasorleri olusturmaniza gerek yoktur.

3. Wider Veri Setini Voc Xml Formatına Cevir

python ./wider_to_xml.py -ap ./wider_data/wider_face_split/wider_face_train_bbx_gt.txt -tp ./wider_data/WIDER_train_annotations/ -ip ./wider_data/WIDER_train/images/
python ./wider_to_xml.py -ap ./wider_data/wider_face_split/wider_face_val_bbx_gt.txt -tp ./wider_data/WIDER_val_annotations/ -ip ./wider_data/WIDER_val/images/

4. Voc Xml Veri Setini Yolo Formatına Cevir

python ./xml_to_yolo --path ./wider_data/WIDER_train_annotations/
python ./xml_to_yolo --path ./wider_data/WIDER_val_annotations/

5. Yolo Modelini Egit

!yolov5 train --data data.yaml --weights 'yolov5n.pt' --batch-size 16 --epochs 100 --imgs 512

6. Yolo Modelini Test Et

Tek resim test etmek icin:

!yolov5 detect --weights wider-yolo.pth --source  file.jpg  

Tum resim dosyasini test etmek icin

!yolov5 detect --weights wider-yolo.pth --source  path/*.jpg 

Not: Yeterli Gpu kaynağına sahip olamadığım icin wider seti icin dusuk parametre degerleri verdim. Parametre Degerleri:

batch-size: 256, epochs: 5, imgs 320

6. Yolov5 + Sahi Algoritmasini Test Et

from sahi.model import Yolov5DetectionModel
from sahi.utils.cv import read_image
from sahi.predict import get_prediction, get_sliced_prediction, predict
from IPython.display import Image

detection_model = Yolov5DetectionModel(
   model_path="last.pt",
   confidence_threshold=0.3,
   device="cpu",
)

result = get_sliced_prediction(
    "test_data/2.jpg",
    detection_model,
    slice_height = 256,
    slice_width = 256,
    overlap_height_ratio = 0.8,
    overlap_width_ratio = 0.8
)
result.export_visuals(export_dir="demo_data/")
Image("demo_data/prediction_visual.png")

Sahi Algoritmasi ile ilgili Ornek Proje:

• yolov5-pytorch-sahi

Referanslar:

• Fatih Cagatay Akyon
• Alexis Kofman
  
• yolov5-pip
• Sahi