1. Img2img comfyui workflow which converts a photo to a line art style image which can be used as a coloring book page.
2. Portrait Aspect Ratio: 8:11 (1600 x 2200px)
3. The line art style image needs to maintain a very close resemblance to the people, animals and other subject matter in the input image. Hair and face details are most important.
4. The image needs to consistently create quality outputs without errors or hallucinations. No grayscale or shading.
5. The line art style will have a slight cartoon style, but maintain enough realism so that the original picture is easily recognizable in the output image. The lines in the image need to be clean and bold. It needs to be in a line art style that will work for a coloring book page.
6. Ideally the workflow is efficient. Target generation time <20 seconds on a 4090.