remove "PDF" and rule about not processing image within a "Picture"

app.py

@@ -22,14 +22,13 @@ MAX_PIXELS = 11289600
 IMAGE_FACTOR = 28
 
 # Prompts
-prompt = """Please output the layout information from the PDF image, including each layout element's bbox, its category, and the corresponding text content within the bbox.
+prompt = """Please output the layout information from the image, including each layout element's bbox, its category, and the corresponding text content within the bbox.
 
 1. Bbox format: [x1, y1, x2, y2]
 
 2. Layout Categories: The possible categories are ['Caption', 'Footnote', 'Formula', 'List-item', 'Page-footer', 'Page-header', 'Picture', 'Section-header', 'Table', 'Text', 'Title'].
 
 3. Text Extraction & Formatting Rules:
-    - Picture: For the 'Picture' category, the text field should be omitted.
     - Formula: Format its text as LaTeX.
     - Table: Format its text as HTML.
     - All Others (Text, Title, etc.): Format their text as Markdown.