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The AVIF file format is a new and efficient image compression format that can provide better image quality and smaller file sizes. AVIF is derived from the AV1 video coding standard and uses advanced compression techniques, including variable frame rate, variable resolution, and variable quantization. AVIF files can contain images with up to 16-bit depth, support transparency and animation, and can be created and edited in many different applications, including Adobe Photoshop, GIMP, and Microsoft Paint. The advantages of the AVIF file format are that it can provide better image quality and smaller file sizes, and it is widely used on the web.
OpenEXR is an HDR standard developed by Industrial Light & Magic. OpenEXR file extension is .exr, the common OpenEXR file is FP16 (16bit Float Point, also known as half Float Point) data image file, the data type of each channel is FP16, a total of four channels 64bpp, each channel 1 bit bit is used to mark the "index", 5 bits are used to store the value of the index, 10 bits are used to store the mantissa of the chromaticity coordinates (u, v), and its dynamic range is from 6.14 × 10 ^ -5 to 6.41 × 10 ^ 4.