AI Image Generation Revision
AI Image Generation Revision
If You Can Describe It, You Can Create It
Framework: S.V.C.L. (Subject, Visual Style, Composition, Lighting)
The core idea
Good AI image prompts aren't longer, they're more structured. S.V.C.L. breaks a prompt into 4 deliberate parts: Subject (what/who is in the image), Visual Style (the aesthetic — photorealistic, illustration, etc.), Composition (framing and arrangement), and Lighting (how the scene is lit). Filling in all four consistently produces sharper, more usable results than a single-sentence description.
Negative prompts (specifying what should NOT appear) and in-painting (selecting and regenerating just one area of an existing image) give finer control once the base image is close to right. For images that need readable embedded text, some tools handle text rendering far better than others — worth checking before relying on any single tool for that use case.
Day 4 also covers real ethical boundaries: AI-generated images with no significant human creative input generally aren't copyright-protected in most jurisdictions, and responsible practice means describing an artistic style conceptually rather than naming a specific living artist to imitate.
Key terms
| Term | Definition |
|---|---|
| S.V.C.L. | Subject, Visual Style, Composition, Lighting -- the 4-part formula for structured image prompts |
| Negative prompt | An instruction specifying what should be excluded from a generated image |
| In-painting | Selecting a specific region of an existing image and regenerating only that part |
| Image-to-image editing | Using an existing image as a reference/starting point for a new generated variation |
Common mistakes to avoid
- Writing a one-line prompt and hoping the AI infers style, composition, and lighting on its own
- Not using negative prompts to remove obviously unwanted elements
- Assuming any AI image tool renders on-image text accurately without checking
- Naming a specific living artist's style instead of describing the aesthetic conceptually
Before the exam, make sure you can...
- Recite all 4 S.V.C.L. elements and what each one controls
- Explain the difference between in-painting and image-to-image editing
- State the copyright status of a purely AI-generated image with no human creative input
- Know the 3 required images in the Day 4 assignment