Patent ID: 8941881
Filing Date: 2015-01-27
Classification: G06K,G06T

Abstract:
1. A method for rasterizing a transparent page, comprising: interpreting the transparent page to obtain graphic entities, transparency properties of the graphic entities, and profile information of the graphic entities; dividing the transparent page into a transparent area and a nontransparent area according to the transparency properties of the graphic entities; identifying, from the graphic entities, an overlapping graphic entity having an overlapping portion with the transparent area according to the profile information of the graphic entities; and dividing the transparent area into a de-transparentizing area and an ultimate transparent area by using the overlapping graphic entity, wherein dividing the transparent area into a de-transparentizing area and an ultimate transparent area comprises: generating a cell of the transparent area by using the overlapping graphic entity, the cell having a same graphic entity property; dividing the transparent area into the de-transparentizing area and the ultimate transparent area according to a type of the cell; writing an area covered by the cell into the de-transparentizing area if the cell is a first type of cell or a second type of cell; and writing an area covered by the cell into the ultimate transparent area if the cell is a third type of cell, wherein: