1. A non-contact measurement apparatus, comprising: a probe for mounting on a coordinate positioning apparatus, comprising at least one imaging device for capturing an image of an object to be measured; an image analyser configured to analyse at least one first image of an object obtained by the probe from a first perspective and at least one second image of the object obtained by the probe from a second perspective so as to identify at least one target feature on the object to be measured, and further configured to obtain topographical data regarding a surface of the object via analysis of at least one image, obtained by the probe, of the object on which an optical pattern is projected.