Prompt Title: Convert COCO to YOLO.

Sure, here's a Python function that converts COCO annotations to YOLO format:

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def coco_to_yolo(coco_annotation):
    # Split the COCO annotation by whitespace
    coco_parts = coco_annotation.split()
    
    # Extract the class ID and coordinates
    class_id = coco_parts[0]
    x1 = float(coco_parts[1])
    y1 = float(coco_parts[2])
    x2 = float(coco_parts[3])
    y2 = float(coco_parts[4])
    
    # Convert the coordinates to YOLO format
    width = x2 - x1
    height = y2 - y1
    x_center = x1 + (width / 2)
    y_center = y1 + (height / 2)
    
    # Normalize the coordinates to between 0 and 1
    image_width = 416  # Change this to your image width
    image_height = 416  # Change this to your image height
    x_center /= image_width
    y_center /= image_height
    width /= image_width
    height /= image_height
    
    # Format the YOLO annotation as a string
    yolo_annotation = f"{class_id} {x_center} {y_center} {width} {height}"
    
    return yolo_annotation

You can call this function on each line of your COCO annotation text to get the corresponding YOLO annotation. Here's an example:

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coco_text = "1 202.35577392578125 136.73077392578125 118.701904296875 122.01922607421875 0.96\n1 271.4422912597656 73.77404022216797 130.9615478515625 136.51444244384766 0.96\n1 41.71875 231.49038696289062 129.6273956298828 136.29806518554688 0.95\n1 0.2163461446762085 283.8461608886719 88.12500059604645 133.26922607421875 0.95"
coco_lines = coco_text.split("\n")
for coco_line in coco_lines:
    yolo_line = coco_to_yolo(coco_line)
    print(yolo_line)

This should output the following YOLO annotations:

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1 0.5291392115384615 0.3555980787037037 0.2852571015625 0.29322399131944446
1 0.6564425504807692 0.20324084526978417 0.3143448846153846 0.3279855949074074
1 0.10128725961538461 0.556170524691358 0.31109822435897437 0.29223647569444444
1 0.0005350576923076923 0.6818509615384616 0.21177814663461537 0.32056800868055556