how to change the num_instances when i detect the image?

[apan666555]

📚 Documentation Issue

I predict the image show:detected 100 instances in 0.69s,and i print the predictor:Instances(num_instances=100, image_height=1080,
my weight only have 2 class, i want to change the num_instances ,please tell me how to change

[Programmer-RD-AI]

To change the number of instances detected in the image, modify the detection threshold or apply post-processing to filter out unwanted instances based on your criteria.

from detectron2.engine import DefaultPredictor
from detectron2.config import get_cfg
from detectron2 import model_zoo

# Load the model configuration and set the desired threshold
cfg = get_cfg()
cfg.merge_from_file(model_zoo.get_config_file("COCO-InstanceSegmentation/mask_rcnn_R_50_FPN_3x.yaml"))
cfg.MODEL.ROI_HEADS.SCORE_THRESH_TEST = 0.7  # Set your desired threshold here
cfg.MODEL.WEIGHTS = "path/to/your/model_weights.pth"  # Update with your model weights

predictor = DefaultPredictor(cfg)

# Run the prediction
image = cv2.imread("path/to/your/image.jpg")  # Replace with the path to your image
outputs = predictor(image)

# Post-processing to filter the instances if needed
instances = outputs["instances"]
filtered_instances = instances[instances.scores > 0.7]  # Filtering based on score threshold

print(f"Number of detected instances: {len(filtered_instances)}")