fix edge case for OCR

vision_agent/tools/tools.py

@@ -468,7 +468,7 @@ def ocr(image: np.ndarray) -> List[Dict[str, Any]]:
 
  pil_image = Image.fromarray(image).convert("RGB")
  image_size = pil_image.size[::-1]
- if image_size[0] < 1 and image_size[1] < 1:
+ if image_size[0] < 1 or image_size[1] < 1:
  return []
  image_buffer = io.BytesIO()
  pil_image.save(image_buffer, format="PNG")
@@ -1112,6 +1112,8 @@ def florence2_ocr(image: np.ndarray) -> List[Dict[str, Any]]:
  """
 
  image_size = image.shape[:2]
+ if image_size[0] < 1 or image_size[1] < 1:
+ return []
  image_b64 = convert_to_b64(image)
  data = {
  "image": image_b64,