draw_boxes.py

from PIL import Image, ImageDraw, ImageFont
import numpy as np
import colorsys

def get_color(label):
    # Simple hash function to generate consistent colors for each label
    hash_value = hash(label)
    hue = (hash_value % 100) / 100.0
    saturation = 0.7
    value = 0.9
    rgb = colorsys.hsv_to_rgb(hue, saturation, value)
    return tuple(int(x * 255) for x in rgb)

def draw_bounding_boxes(image: Image, results: dict, model, threshold=0.3):
    draw = ImageDraw.Draw(image)
    font = ImageFont.load_default()

    for score, label_id, box in zip(results["scores"], results["labels"], results["boxes"]):
        if score > threshold:
            label = model.config.id2label[label_id.item()]
            box = [round(i, 2) for i in box.tolist()]
            color = get_color(label)
            
            # Draw bounding box
            draw.rectangle(box, outline=color, width=3)
            
            # Prepare text
            text = f"{label}: {score:.2f}"
            text_bbox = draw.textbbox((0, 0), text, font=font)
            text_width = text_bbox[2] - text_bbox[0]
            text_height = text_bbox[3] - text_bbox[1]
            
            # Draw text background
            draw.rectangle([box[0], box[1] - text_height - 4, box[0] + text_width, box[1]], fill=color)
            
            # Draw text
            draw.text((box[0], box[1] - text_height - 4), text, fill="white", font=font)
    
    return image
  
import numpy as np