大きな画像を作る新しい方法 Hires. fixは過去のもの？ 【Stable Diffusion web UI ControlNet Tile】

The video begins with a discussion about the use of high-resolution fixes (ハイレゾフィックス) for generating detailed images. However, it is noted that this method is becoming outdated. The script introduces the concept of table diffusion (テーブルディフュージョン), which has limitations when it comes to generating small details in images due to its standard size of 512x512 pixels. To overcome this, the video suggests enlarging the image size but warns that this can cause the image to break. Instead, a method of using high-resolution fixes to first create a smaller image and then enlarge it is proposed. This approach allows for more detailed images but can also damage the original image. To maintain the original image while adding details, fine-tuning of the denoising strength is necessary. However, there are still limitations to what can be achieved, and sometimes the desired image cannot be created, especially when video memory is insufficient for enlarging the image. The script then introduces the use of an extension called Child VAE (チャイルドvae) to enlarge images with less video memory, but notes that it may not always produce the expected result.

The video then transitions to discussing a new feature in ControlNet (コントロールネット), which is a powerful tool for controlling the generation of images to get the desired outcome. A new control type called 'Tile' (タイル) is introduced, which is demonstrated through sample images. The 'Tile' control type is shown to be effective in enlarging images while maintaining and reconstructing details, unlike traditional super-resolution methods which can result in a loss of detail. The video explains how to use ControlNet with the Tile model, emphasizing the importance of having the correct version and downloading the appropriate model. It also provides instructions on setting up the image size and the process of enlarging the image using scripts like SD Upscale and SwingIR, while also detailing the settings for ControlNet, including enabling it, checking for pixel perfection, and selecting the Tile control type. The video concludes with a demonstration of the enlarged image, noting the improvements in detail such as added eyelashes, clearer building outlines, and more defined characters in the background.

The final paragraph of the script invites viewers to try their hand at creating highly detailed images using the advanced techniques discussed in the video. It concludes with a call to action for viewers to subscribe to the channel and give a high rating, suggesting that the content provided is valuable and informative for those interested in image enlargement and detail enhancement.