以下是关于线稿上色(Midjourney + Stable Diffusion)的详细步骤:
1. 线稿产出:使用 Midjourney 生成线稿,关键词如“Black and white line drawing illustration of a cute cat cartoon IP character, black line sketch, wearing a fortune hat, wearing a collar around the neck, Carrying a huge bag containing scrolls and ingots, matching rope and straps at his wrists, Chinese element style, popular toys, blind box toys, Disney style, white background niji 5 style expressive”。
2. PS 手动重绘错误的地方:对于生成的线稿,在 PS 中手动修正一些错误,比如添加阴影等。
3. SD 上色:
关键词:正关键词包括增加照片质感常用的、mj 生成线稿的关键词调整(去掉 mj 里线稿的关键词,针对效果不好的部分添加特定关键词,如嘴巴效果不好添加张开嘴巴等,颜色可单独调整控制)、风格参数,如“, CG, unity, official art, amazing, finely detail, an extremely delicate and beautiful, extremely detailed, 3d, rendering, c4d, blender, octane render, Chinese festive color scheme, open mouth, 1 tooth, The cat has a pair of white gloves, a cute cat cartoon IP character, black line sketch, wearing a hat, wearing a collar around the neck, carrying a huge red bag, matching rope and straps at his wrists, Chinese element style, poular toys, blind box toys, Disney style”;负关键词根据效果添加,如“back and white, green, blue, purple”。
模型选择:真实系大模型选择 revAnimated v1.2.2 版本。
尺寸设置:尺寸最好和草稿图保持一致,如果尺寸太大爆显存可以保持和草图一样的比例缩小尺寸。
ControlNet 设置:上传自己的草图到 ControlNet,点击启用,记得点击?的图标让预处理器生效。
ControlNet 的预处理器有 37 种,可分类理解为线条约束类、canny 边缘检测、scribble 涂鸦、softedge 软边缘检测、lineart 线稿提取等。其中 lineart 线稿提取可能是目前最强的线稿上色功能。例如,从花瓣上找一张线稿图,先通过 invert 预处理将白底黑线处理成黑底白线,然后拖到左边重新载入,切换到 lineart 预处理器和模型进行生成,文生图关键词填写如“, solo, Blue hair, white clothes, white background”。
2025-02-18