xBRZ: "Scale by rules" - high quality image upscaling filter by Zenju.
Java port of xBRZ 1.8 by Stanio.
The following is just an approximation due to viewing conditions such as screen resolution and browser image interpolation.
The highlighted column is the base (no scaling applied) image:
xBRZ upscaling provides crisp edges and reconstructed detail. Images are upscaled to an integral factor producing a resultion ≥ target resolution. They may be then downscaled to the exact target resolution as necessary using a smooth interpolation.
One may notice downscaling a hires base image using a smooth algorithm (bilinear, bicubic) generally produces better, more detailed results vs. upscaling a lores base image. Having a source hires variant could make xBRZ unnecessary.
Except for xbrz-core, this project, source code and documentation is released under BSD Zero Clause License. See LICENSE.