Seedream 4.5 Portrait Image-to-Image: Realistic and Artistic Dual-Style Reference

Using the Seedream 4.5 image-to-image pipeline, this demonstrates how a single portrait reference image can be pushed in two different visual directions by two distinct editing instructions: first, a realistic photographic finish that preserves skin texture, subsurface scattering, and natural light ratios; second, a cinematic artistic treatment that retains the subject's structure but reconstructs it with volumetric fog and stage lighting. The work drives image_urls with the same reference portrait (a 3:4 portrait base image generated by assets), provides aspect_ratio and resolution in base, and writes the editing instruction into input.prompt at the top level, demonstrating the pipeline's controllability over character structure preservation, lighting reconstruction, and skin material restoration. It is suitable for developers who want to learn how to write prompts for image-to-image portrait styles, the division of labor between reference images and editing instructions, and scenarios requiring stable character consistency such as e-commerce portraits, concept design, and social media deliverables.