I was trying to upscale this image in img2img to 1024x1024 and was really struggling. I couldn’t preserve the patterns in her gown and for some reason the gown wouldn’t stay in her right hand, it’d fall against her leg, and was longer for some reason. Trying to force-correct these things often ended up with distortions. Any ideas?

Example of fail

Here’s the generation for the 512x512 above:

Prompt:

extremely detailed CG, high resolution, beautiful detailed eyes, Corinna, (french braid:1.2), adorable, standing, looking back over her shoulder, cheerful, smile, thin legs, sheer nightgown

Negative prompt:

3d, 3d render, painting, digital painting, watermark, sepia, black & white, NG_DeepNegative_V1_75T, EasyNegative, verybadimagenegative_v1.3, bad_pictures, (worst quality:2), (low quality:2), (normal quality:2), lowres, normal quality, ((monochrome)), ((grayscale)), (ugly:1.33), bad face, bad fingers, bad anatomy, spot, (poorly eyes:1.2), pubic hair, pubes, hairy, missing fingers, long hair, ((butt)), ((thick legs))

Steps: 20, Sampler: Euler a, CFG scale: 7, Seed: 2809846013, Size: 512x512, Model hash: 0c874641a9, Model: myneFactoryAscendance_v20, Version: v1.4.0

Used embeddings: easynegative [119b], verybadimagenegative_v1.3 [89de]

  • Nobu@burggit.moe
    2·
    1 year ago

    You can always try upscaling without re-rendering the whole image. It will stay the same, but upscaled to a higher resolution. This is the method i use to upscale to big resolution.

    example:

    The above image has a resolution of: 5120 x 2880

    Initial render was 512 x 768. So it keeps the whole image intact, no changes, but does the upscale on it. Mind you, any imperfections will stay in this method.

    If you truely want to upscale with a re-render you can expect the image to slightly change. I never had luck keeping an image to stay the exact same when upscaling using img2img

    • Pink Bow@burggit.moeOP
      1·
      1 year ago

      Perhaps I’m doing things wrong, but I want the image to change slightly. To me, her face looks way better in the img2img, even if other things got changed. Perhaps I need to work on getting the txt2img to render more correctly rather than using img2img as a crutch.

      • Nobu@burggit.moe
        2·
        1 year ago

        Correct! you want to do it in txt2img first (render really good image). only THEN do you wanna upscale it (not via img2img as it will take a shit ton of time and change the image slightly). u want to do it via extras tab then, and then choosing a method to upscale. i can tell you exactly what you need, how to do it in future if u want. go with you step by step