Image upscaling with Tensorflow.js

Here is a test where you can see the effect of before / after applying two step upscaling from an image in 480 x 360 to 1920 x 1440. The before is showcased with basic pixel interpolation. The improvement of AI over simple interpolation algorithm is clear, with less blur and more details, without introducing much noise or artifacts.

With Yayoi-JS, using an average 2018 core i5 laptop with intel GPU, it took approximatively 28 seconds to double the size from 480 x 360 to 960 x 720 and 85 seconds to upscale to 1920x1440.