Chaining Image Generations Is a Pipeline Bug: Measuring Drift Across Four Rendering Stages

说明与用途

链式图像生成会导致漂移，错误变得与预期细节无法区分。直接从原始图像重新生成每一步可消除漂移。

问题

Chaining image generation steps causes drift, where errors introduced early propagate and become indistinguishable from intended outputs in later stages.

结果

Chaining causes compounding drift; refactoring to generate each finish directly from the base line art stops drift and yields more consistent results.

工作流

• 1. Prepare a base image and set fixed seed, model, and instruction.
• 2. Run line art generation.
• 3. Pass line art to grayscale stage.
• 4. Pass grayscale to flat colors stage.
• 5. Pass flat colors to final render stage.
• 6. Measure drift by comparing edge maps and pixel statistics across stages.
• 7. Refactor by generating each finish directly from the base line art instead of chaining.

证据

Chaining generations is convenient and lossy. Every pass rewrites the entire image, so anything that survives does so by being redrawn the same way.

来源

The chained final render preserved everything and advanced almost nothing.

来源