Update app.py

app.py

@@ -42,7 +42,7 @@ def detect_and_read_plate(image):
     logger.info("Starting image processing for license plate detection")
     try:
         detected_texts = []
-        results = model(image, conf=0.25)  # Default confidence threshold
+        results = model(image, conf=0.1)  # Lower confidence to increase detections
         logger.info(f"YOLO model returned {len(results)} results")
         
         for result in results:
@@ -52,13 +52,9 @@ def detect_and_read_plate(image):
             
             for box, conf in zip(boxes, confidences):
                 x1, y1, x2, y2 = map(int, box)
-                width = x2 - x1
-                height = y2 - y1
-                
-                # Filter by aspect ratio (license plates typically have width/height ~2-5)
-                aspect_ratio = width / height if height > 0 else 0
-                if not (2.0 <= aspect_ratio <= 5.0) or width < 50 or height < 10:
-                    logger.warning(f"Skipping box with aspect ratio {aspect_ratio:.2f}, size {width}x{height}")
+                # Minimal size filter to skip tiny boxes
+                if (x2 - x1) < 20 or (y2 - y1) < 10:
+                    logger.warning(f"Skipping small box: ({x1}, {y1}, {x2}, {y2})")
                     continue
                 
                 # Crop the detected license plate
@@ -74,8 +70,8 @@ def detect_and_read_plate(image):
                     for res in ocr_result:
                         text = res[1]
                         confidence = res[2]
-                        # Filter for alphanumeric text typical of license plates
-                        if re.match(r'^[A-Z0-9\s\-]{3,10}$', text) and confidence > 0.3:
+                        # Light filtering: prefer alphanumeric, avoid long text
+                        if len(text) <= 12 and confidence > 0.2 and re.match(r'^[A-Z0-9\s\-]+$', text):
                             detected_texts.append(f"{text} (conf: {conf:.2f})")
                             logger.info(f"Detected Plate: {text} (YOLO conf: {conf:.2f}, OCR conf: {confidence:.2f})")
                         else: