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ComfyUI-HQ-Image-Save adds Image Save nodes for TIFF 16-bit and EXR 32-bit formats, ideal for users applying LUTs or color corrections, ensuring maximum color accuracy preservation.
ComfyUI-HQ-Image-Save is an extension designed to enhance the image saving and loading capabilities of ComfyUI, particularly for AI artists who work with high-quality images. This extension allows you to save and load images and latent data in 32-bit EXR format, which preserves the full floating-point precision of your images. This is especially useful for maintaining the highest possible image quality during the creative process, avoiding the quantization issues that can occur with formats like PNG.
By using ComfyUI-HQ-Image-Save, you can ensure that your images retain their original quality, making it an invaluable tool for artists who demand the best from their digital creations. Whether you're working on individual images or batch processing multiple files, this extension provides the flexibility and precision you need.
At its core, ComfyUI-HQ-Image-Save works by allowing you to save and load images and latent data in the EXR format. EXR is a high-dynamic-range (HDR) image file format that supports 32-bit floating-point precision, which means it can store a much wider range of color values compared to standard 8-bit formats like PNG.
Why should I use EXR instead of PNG? EXR format supports 32-bit floating-point precision, which means it can store a much wider range of color values compared to the 8-bit PNG format. This helps in preserving the quality of your images.
How do I view latent EXR files? For viewing latent EXR files, you can use the following formula to approximate RGB values from the four latent channels:
r = (0.298 * r + 0.187 * g - 0.187 * b - 0.184 * a) * 0.18215
g = (0.207 * r + 0.286 * g + 0.189 * b - 0.271 * a) * 0.18215
b = (0.208 * r + 0.173 * g + 0.264 * b - 0.473 * a) * 0.18215
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