DETECTION AND DECODING METHOD

摘要

An electronic method of detecting a visual object in an image of a scene comprises sampling the image at sampling points with a sampling template defining a fixed set of image detection offsets relative to any sampling point at which the image is sampled, each of the set of image detection offsets being related to another one of the image detection offsets, obtaining at least one colour value for each image detection offset relative to any sampling point, forming a set of data values by, for each image detection offset, comparing each at least one colour value with a corresponding colour value of the related image detection offset to obtain a data value, and upon a set of data values obtained for a sample point satisfying a detection condition for the visual object, determining that the visual object has been located.