Update working_yolo_pipeline.py

working_yolo_pipeline.py

@@ -224,10 +224,60 @@ except Exception as e:
 
 
 
+# def get_latex_from_base64(base64_string: str) -> str:
+#     """
+#     Decodes a Base64 image string, uses Pix2Text to recognize the formula, 
+#     and returns the LaTeX code, stripped of all whitespace, as requested.
+#     """
+#     if p2t is None:
+#         return "[P2T_ERROR: Model not initialized]"
+
+#     try:
+#         # 1. Decode Base64 to Image
+#         image_data = base64.b64decode(base64_string)
+#         image = Image.open(io.BytesIO(image_data))
+        
+#         # 2. Recognize text and formulas
+#         # Use keep_original_image=False to save memory
+#         result = p2t.recognize(image, save_formula_images=False, use_analyzer=True, keep_original_image=False)
+        
+#         # 3. Parse the result for LaTeX
+#         extracted_latex_parts = []
+#         if isinstance(result, list):
+#             for item in result:
+#                 # Use .text for structured output, item itself for string output
+#                 text = item.text if hasattr(item, 'text') else str(item)
+#                 extracted_latex_parts.append(text)
+#         elif isinstance(result, str):
+#              extracted_latex_parts = [result]
+        
+#         # Join with a space first, then clean all whitespace
+#         extracted_latex = " ".join(extracted_latex_parts).strip()
+        
+#         # *** CORE CHANGE: Remove all spaces/line breaks as requested by the user ***
+#         # This uses regex to replace any sequence of whitespace characters (spaces, tabs, newlines) with an empty string.
+#         cleaned_latex = re.sub(r'\s+', '', extracted_latex)
+#         cleaned_latex = re.sub('\\', '\', cleaned_latex)
+
+        
+#         if not cleaned_latex:
+#              return "[P2T_WARNING: No formula found]"
+
+#         # Return the clean LaTeX string without wrapping $$, as requested.
+#         return cleaned_latex
+
+#     except Exception as e:
+#         # Catch any unexpected errors
+#         print(f"  ❌ Pix2Text Recognition failed: {e}")
+#         return f"[P2T_ERROR: Recognition failed: {e}]"
+
+
+
 def get_latex_from_base64(base64_string: str) -> str:
     """
     Decodes a Base64 image string, uses Pix2Text to recognize the formula, 
-    and returns the LaTeX code, stripped of all whitespace, as requested.
+    and returns the LaTeX code, stripped of all whitespace, as requested, 
+    and corrects unintended double backslashes.
     """
     if p2t is None:
         return "[P2T_ERROR: Model not initialized]"
@@ -254,17 +304,19 @@ def get_latex_from_base64(base64_string: str) -> str:
         # Join with a space first, then clean all whitespace
         extracted_latex = " ".join(extracted_latex_parts).strip()
         
-        # *** CORE CHANGE: Remove all spaces/line breaks as requested by the user ***
-        # This uses regex to replace any sequence of whitespace characters (spaces, tabs, newlines) with an empty string.
+        # *** CORE CHANGE 1: Remove all spaces/line breaks ***
         cleaned_latex = re.sub(r'\s+', '', extracted_latex)
-        cleaned_latex = re.sub('\\', '\', cleaned_latex)
-
         
         if not cleaned_latex:
              return "[P2T_WARNING: No formula found]"
-
-        # Return the clean LaTeX string without wrapping $$, as requested.
-        return cleaned_latex
+        
+        # *** CORE CHANGE 2: Fix unintended double backslashes for LaTeX rendering ***
+        # This replaces every sequence of two literal backslashes ('\\') with one literal backslash ('\'),
+        # ensuring LaTeX commands like '\frac' are correctly formed.
+        final_latex = cleaned_latex.replace('\\\\', '\\')
+        
+        # Return the clean and corrected LaTeX string.
+        return final_latex
 
     except Exception as e:
         # Catch any unexpected errors
@@ -278,7 +330,6 @@ def get_latex_from_base64(base64_string: str) -> str:
 
 
 
-
 # # Initialize the YOLO model
 # model = YOLO(WEIGHTS_PATH)