Add download script for model file (no large model file)

download_model.py

@@ -0,0 +1,21 @@
+import urllib.request
+import os
+
+def download_model():
+    model_url = "https://github.com/CMU-Perceptual-Computing-Lab/openpose/raw/master/models/pose/coco/pose_iter_440000.caffemodel"
+    proto_url = "https://raw.githubusercontent.com/CMU-Perceptual-Computing-Lab/openpose/master/models/pose/coco/pose_deploy_linevec.prototxt"
+    
+    print("Downloading pose estimation model...")
+    
+    # Download the model file
+    urllib.request.urlretrieve(model_url, "pose_model.caffemodel")
+    print("Downloaded pose model")
+    
+    # Download the prototxt file
+    urllib.request.urlretrieve(proto_url, "pose_deploy_linevec.prototxt")
+    print("Downloaded prototxt file")
+    
+    print("Model files downloaded successfully!")
+
+if __name__ == "__main__":
+    download_model()