1. A computer-implemented method of generating at least one augmentation representation based on respective predefined mask data identifying coordinates of a plurality of masked pixels, the method comprising the computer-implemented steps of: receiving data of an image captured by a camera; receiving data identifying coordinates of a plurality of labelled feature points defining a detected object in the captured image; generating at least one augmentation representation based on respective predefined mask data identifying coordinates of a plurality of masked pixels, by: retrieving data defining a plurality of polygonal regions of augmentation image data determined for the detected object, wherein the augmentation image data defines a plurality of augmentation values to be applied to the captured image data, and wherein each polygonal region is defined by three or more vertices, each vertex of the three or more vertices being associated with a corresponding labelled feature point; placing the retrieved plurality of polygonal regions over the respective mask data; identifying polygonal regions that include at least one masked pixel; and storing data representing the identified subset of polygonal regions.