Lossless scaling is a method used to enlarge or cut back the scale of a picture with out dropping any of the unique information. That is in distinction to lossy scaling, which reduces the file measurement by eradicating among the information, leading to a decrease high quality picture. Lossless scaling is commonly used for photos that must be enlarged for printing or different functions the place top quality is necessary.
Lossless scaling is achieved by utilizing algorithms that protect the entire unique information within the picture. This may be executed by utilizing quite a lot of strategies, corresponding to bicubic interpolation or Lanczos resampling. These strategies work by creating new pixels which might be interpolated from the unique pixels, guaranteeing that the ensuing picture is as near the unique as potential.