The Invoke canvas.The Invoke canvas.
Invoke workflow
Storyboard Sketch to Photoreal Concept Art

The Sketch to Photoreal Concept Art workflow transforms a black-and-white concept sketch into a highly detailed, photorealistic render, with lighting, textures, and depth accurately inferred.

This enables production designers and cinematographers to accelerate concept-to-production workflows by instantly converting rough sketches into usable visual references.

How to Use

  1. Upload Your Sketch or Line Art – Start by uploading a rough sketch or line drawing. This serves as the foundation for generating your cinematic still.
  2. Describe Your Scene – Add a description of the subject matter to refine the visual style and composition. For example, “a man driving a car, daughter in the background, indie classic film, vibrant colors, Alfonso Cuarón.”
  3. Adjust Strength Settings – Choose how closely the model should follow your original sketch. A higher value keeps the image truer to the original, while a lower value allows for more creative interpretation.
  4. Select Your Model and Parameters – Pick the model that best suits your needs and adjust parameters like resolution, control weight, and noise levels if necessary.
  5. Generate Your Cinematic Still – Once everything is set, run the workflow, and the system will process your input, transforming your sketch into a fully rendered cinematic image.
  6. Save and Organize – Save your generated image to a board for further refinement or organization within your project.

How It Works

  1. Image Processing & Edge Detection – The uploaded sketch is analyzed using a hard-edge detection model (Canny filter) to extract key outlines and structural information.
  2. Prompt Composition – The provided textual description is combined with predefined cinematic styling elements (e.g., “f/8, 80mm, dynamic lighting”) to guide the model in rendering the final image.
  3. ControlNet Guidance – The processed sketch is used as a guiding input via ControlNet to maintain structural accuracy while allowing for creative enhancements.
  4. Model Invocation – The system loads the selected SDXL model and applies the prompt alongside the processed image, ensuring the generated result aligns with the provided vision.
  5. Latent Processing & Denoising – Noise is added and controlled using denoising techniques to refine details and improve the overall realism of the output.
  6. Final Image Generation – The processed latents are decoded back into a high-resolution image, resulting in a cinematic still that retains the composition of the original sketch while enhancing it with a photorealistic or stylized look.
  7. Saving & Exporting – The final image is saved to a designated board, allowing for further refinement, iteration, or use in a storyboard, film previsualization, or creative project.

FAQs

The workflow is loading with errors or telling me that I don't have a model in my project. What do I do?
Can I use a different model with these workflows?
How should I structure my prompts?
The result I generated isn’t what I expected. What should I do?
"Moving towards creation of assets that will actually be placed in game is more demanding. However, a number of companies like Invoke… are focusing on developing effective specialized tools for game artists for both concept art and production assets."
Concept Art