Basically, Vector Magic takes rasterized images (composed of pixels) and converts them to vector (or scalable) images. The result is an image that can be easily resized with no blur or pixelation ...

Hao Yan, Kamran Paynabar, Jianjun Shi, Anomaly Detection in Images With Smooth Background via Smooth-Sparse Decomposition, Technometrics, Vol. 59, No. 1 (February 2017), pp. 102-114 ...