Document analysis method to detect BW/color areas and corresponding scanning device

摘要

The invention relates to a document analysis method to detect BW/color areas comprising the following steps: step 1) getting an input image data to be split in elementary information; step 2) analysing the input data to get the colorfulness of each elementary information; step 3) creating a first and a second output layers corresponding to the BW and color elementary information respectively; step 4) applying a first set of atomic operations to the BW layer and a second different set of atomic operations to the color layer; step 5) combining the BW and color layers in order to obtain a desired format for the output data. The invention also relates to a scanning device (17) to acquire documents comprising an input (IN) that receives an input image data, and is connected to a layer creator component (18), which in turn outputs a first and a second layer, such layers having different data compression rate. Finally, the invention relates to a method for acquiring a document based on the analysis of the content of the document itself, comprising the following steps: getting an input image data; creating a first layer containing the image information in a color format; creating a second layer containing the image information in a BW format; managing the first and the second layers in order to obtain a desired format for an output document. <IMAGE>