https://wccftech.com/nvidia-image-scaling-can-now-be-used-on-amd-or-intel-through-lossless-scaling/

NVIDIA Image Scaling was released a few days ago as an updated version of NVIDIA's own spatial upscaling technology. The new algorithm uses a 6-tap filter with 4 directional scaling and adaptive sharpening filters to boost performance, and its sharpening and upscaling occur in a single pass, making it more efficient than similar methods according to NVIDIA.

As we've said in our report, NVIDIA Image Scaling doesn't rely on any proprietary software and therefore its in-game implementations will be usable regardless of your graphics card's manufacturer (AMD, or even Intel). However, no games have native support for NIS yet, and AMD or Intel users obviously cannot rely on NVIDIA's Control Panel or GeForce Experience software to activate it.