Prompt
Generate a realistic image of a middle-aged German man from the 1980s, likely in an academic setting, with a background that suggests a university or a computer science laboratory. The man, Gerhard Reisig, should be depicted with a serious expression, wearing glasses and possibly a suit or a blazer with a tie, exuding an aura of professionalism and intellect. He could be seated at a desk with books or papers related to Petri nets or computer science, or standing in front of a blackboard filled with equations or Petri net diagrams. Incorporate subtle hints of his notable works, such as "Understanding Petri Nets" or "Petri Nets: An Introduction," perhaps on a bookshelf or on the blackboard. The style should be photorealistic.
