Best image downscaling algorithm

1. What is high quality downscaling?
2. Which method is a high quality scaling algorithm for Analysing images?
3. Which method is a high quality scaling algorithm?
4. Which method is a high quality scaling algorithm for enlarging images bicubic?

What is high quality downscaling?

Downscaling is any procedure to infer high-resolution information from low-resolution variables. This technique is based on dynamical or statistical approaches commonly used in several disciplines, especially meteorology, climatology and remote sensing.

Which method is a high quality scaling algorithm for Analysing images?

Pixel art scaling algorithms (hqx)

For magnifying computer graphics with low resolution and few colors (usually from 2 to 256 colors), better results will be achieved by pixel art scaling algorithms such as hqx or xbr. These produce sharp edges and maintain high level of detail.

Which method is a high quality scaling algorithm?

The most widely used scaling method is bilinear interpolation algorithm by which the target pixel can be obtained by using the linear interpolation model in both horizontal and vertical directions.

Which method is a high quality scaling algorithm for enlarging images bicubic?

The best resampling results came from bicubic interpolation, followed by bilinear. The results actually look similar between bicubic and bilinear, but further visual analysis favors bicubic. The worst resampling was from Nearest Neighbor.