make prompts optional

app.py

@@ -178,19 +178,19 @@ def run_model_inference(input_image_pil: Image.Image, prompt_text: str, system_p
 
 
 @spaces.GPU(duration=90)  # Request GPU for this function, allow up to 120 seconds
-def analyze_image(input_image_pil: Image.Image, prompt_text: str, system_prompt_text: str):
+def analyze_image(input_image_pil: Image.Image, prompt_text: Optional[str] = None, system_prompt_text: Optional[str] = None):
     """
     Analyzes the input image using the VLM, visualizes findings, and anonymizes.
     """
     if input_image_pil is None:
         raise gr.Error("Please upload an image.")
-    if not prompt_text:
-        raise gr.Error("Please provide a prompt.")
-    if not system_prompt_text:
-        raise gr.Error("Please provide a system prompt.") # Added check
+    
+    # Use default prompts if none are provided
+    final_prompt_text = prompt_text if prompt_text else DEFAULT_PROMPT
+    final_system_prompt_text = system_prompt_text if system_prompt_text else SYSTEM_PROMPT
 
     try:
-        raw_model_output, image_height, image_width = run_model_inference(input_image_pil, prompt_text, system_prompt_text) # Pass system prompt
+        raw_model_output, image_height, image_width = run_model_inference(input_image_pil, final_prompt_text, final_system_prompt_text)
     except Exception as e:
         print(f"Error during model inference: {e}")
         print(traceback.format_exc())
@@ -281,9 +281,9 @@ with gr.Blocks() as demo:
     with gr.Row():
         with gr.Column(scale=1):
             input_image = gr.Image(type="pil", label="Upload Image")
-            system_prompt_input = gr.Textbox(label="System Prompt", value=SYSTEM_PROMPT, lines=5, interactive=True) # New system prompt input
+            system_prompt_input = gr.Textbox(label="System Prompt", value=SYSTEM_PROMPT, lines=5, interactive=True, value=None) # New system prompt input
             prompt_textbox = gr.Textbox(
-                label="Analysis Prompt", value=DEFAULT_PROMPT, lines=4
+                label="Analysis Prompt", value=DEFAULT_PROMPT, lines=4, value=None
             )
             analyze_button = gr.Button("Analyze Image")
         with gr.Column(scale=2):