SDXL Anime Large Model Outpainting Practice

## Core Preparations

1.  **Recommended Main Model**: Use the current top-tier SDXL anime mega-models, such as `plantMilk` or `waiNSFWIllustrious`.
2.  **Download Exclusive ControlNet Model**: This article uses the SDXL version of the outpainting model — **[controlnetXL_inpaint](https://huggingface.co/kataragi/controlnetXL_inpaint)**.

## Detailed Operation Steps

> Taking "outpainting downwards to complete an incomplete body" as an example

### Step 1: Create an Extended Canvas

This is the most reliable way to control the image:

1.  Place your original image into any image editing tool like Photoshop or Jianying.
2.  Extend the canvas downwards (e.g., if the original image is an 896x1152 vertical image, extend the canvas to 896x1536), leaving a **pure white or pure black blank area** for the missing body parts at the bottom. Save this larger image.

### Step 2: WebUI Local Inpainting Settings

1.  Switch your WebUI main model to **Animagine XL** or your commonly used anime SDXL model.
2.  Navigate to the **img2img -> Inpaint** panel and upload the larger image you just created.
3.  Use the brush to **fill the entire blank area below**, and extend slightly over the edge of the original image by 20-30 pixels (this allows for seamless blending of the new and old parts).
4.  **Key Parameter Adjustments**:
    *   **Mask mode**: Inpaint masked
    *   **Masked content**: fill or latent noise
    *   **Denoising strength**: Keep it between **0.65 ~ 0.75** (too low and legs won't be drawn, too high and the art style will clash with the upper body).
    *   **Dimensions**: Manually adjust to the exact dimensions of your large canvas image (e.g., 896x1536).

### Step 3: Enable ControlNet for Powerful Merging

1.  Expand the **ControlNet** plugin panel below and check **Enable**.
2.  **Preprocessor**: Select **`inpaint_only+lama`** or **`inpaint_fooocus`** (if your WebUI is updated to a newer version, fooocus is highly recommended; it's currently recognized as the most natural algorithm for anime outpainting).
3.  **Model**: Select the **`controlnetXL_inpaint`** you downloaded.
4.  **Control Weight**: Keep it at `1.0`.

### Step 4: Write Anime-Specific Prompts

In the positive prompt, write the prompts you desire to guide the completion of the body. For example: `High heels, cross legs`, etc.

Click **Generate**, and you will find that the anime character, which originally only had an upper body, has its lower body perfectly and smoothly completed, with the clothing material and art style being exactly consistent with the original image.