| 摘要 |
A method of modelling an object (313), comprising capturing images of the object from a plurality of spaced apart cameras (310), creating a three-dimensional model (31) of the object from the images and determining from the model and the images a lighting model (36) describing how the object is lit. Typically, the method comprises the step of estimating the appearance of the object if it were evenly lit; and minimising the entropy in the estimated appearance of the object. Also disclosed is a method of determining how a two-dimensional image is lit, comprising capturing the image (21 in fig. 2), modelling the lighting of the image and removing the effects of the lighting, comprising calculating the entropy of the image with the effects of the lighting removed and selecting the model such that the entropy is minimised. |
