| 摘要 |
A system 40 for processing an image of a document comprises means for providing an image frame of the document and means for pre-processing the image frame to identify regions of interest to produce image samples 43. The effect of reflective highlights within image samples is then reduced by applying a non-linear process that reduces the difference in luminance values between pixels representing highlights and pixels that do not represent highlights. The system also has means for classifying the image samples using machine learning techniques. The non-linear process may be a threshold algorithm or other non-linear process such as a process that has greater effect on high pixel values than low pixel values. |
