เพิ่มแสตมป์รูปภาพลงใน PDF ผ่าน Python

import aspose.pdf as ap

# Open document
document = ap.Document(input_pdf)

# Create image stamp
image_stamp = ap.ImageStamp(input_image_file)
image_stamp.background = True
image_stamp.x_indent = 100
image_stamp.y_indent = 100
image_stamp.height = 300
image_stamp.width = 300
image_stamp.rotate = ap.Rotation.ON270
image_stamp.opacity = 0.5
# Add stamp to particular page
document.pages[1].add_stamp(image_stamp)

# Save output document
document.save(output_pdf)