Update

app.py

@@ -0,0 +1,37 @@
+from flask import Flask, request, send_file, jsonify
+import cv2, io
+import numpy as np
+
+app = Flask(__name__)
+
+model = cv2.dnn_superres.DnnSuperResImpl_create()
+model.readModel('LapSRN_x8.pb')
+model.setModel('lapsrn', 8)
+
+@app.route("/upscale/", methods=["POST"])
+def upscale_image():
+    if 'file' not in request.files:
+        return jsonify({"error": "No file part"}), 400
+
+    file = request.files['file']
+    if file.filename == '':
+        return jsonify({"error": "No selected file"}), 400
+
+    file_bytes = file.read()
+    nparr = np.frombuffer(file_bytes, np.uint8)
+    img = cv2.imdecode(nparr, cv2.IMREAD_COLOR)
+    if img is None:
+        return jsonify({"error": "Invalid image"}), 400
+
+    result = model.upsample(img)
+
+    _, encoded_img = cv2.imencode('.png', result)
+    return send_file(
+        io.BytesIO(encoded_img.tobytes()),
+        mimetype='image/png',
+        as_attachment=False,
+        download_name='upscaled.png'
+    )
+
+if __name__ == "__main__":
+    app.run(host="0.0.0.0", port=6275)