Tracing a picture in Photoshop is a way used to create a vector graphic from a raster picture. A vector graphic is made up of mathematical curves and contours, which makes it infinitely scalable with out dropping high quality. A raster picture, however, is made up of pixels, which might change into distorted or blurry when enlarged.
Tracing a picture may be helpful for a wide range of functions, akin to creating logos, illustrations, or web site graphics. It can be used to transform hand-drawn sketches into digital recordsdata.