Patent Document ID: 9710914
Application ID: 14892848
Patent Status: 1

Claim One:
1. A method for correcting a plurality of images of an object ( 107 ), each image of the plurality of images comprising one or more pixels and each pixel comprising a pixel value, the method comprising the steps of: a) illuminating the object using one or more illumination sources ( 104 , 105 , 106 ) with different directions of illumination, and each image is with a determined direction of illumination; b) selecting a pixel in a first image for obtaining the pixel value of the selected pixel; c) selecting at least one corresponding pixel in at least one other image of the of images for obtaining the pixel value of the at least one selected corresponding pixel; d) calculating at least one ratio of the pixel value of the selected pixel in the first image to each pixel value of the at least one selected corresponding pixel; e) determining a requirement for pixel value correction of the selected pixel on the basis of the at least one calculated ratio; f) calculating a value (W) based on the at least one calculated ratio to determine a corrected pixel value of the selected pixel; g) replacing the pixel value in the first image with the corrected pixel value to provide a corrected first image; and h) repeating steps a), b), c), d), e), f) and g) for each of the images in the plurality of images, wherein calculating a value (W) based on the at least one calculated ratio farther comprises applying a determined mathematical formula winch comprises a sigmoid function.