| 摘要 |
GENERATING OBJECT REPRESENTATION FROM BITMAP IMAGE Methods (500), apparatuses (140), and computer readable storage mediums for 5 generating an object representation (150) from a bitmap image (130) are disclosed. A set of regions, including a background region, is selected (510) from the bitmap image (130). Colour and partial transparency parameters of a first graphical object with partial transparency that overlaps a second graphical object are estimated (520) according to colours of the set of regions. The estimated colour and partial transparency are 10 consistent with a transparency compositing model. Geometric models of the first and second graphical objects are constructed (530) from the set of regions and the estimated colour and transparency parameters of the first graphical object. The object representation (150) is generated (540) dependent upon the geometric models. The object representation (150) may be an electronic document and the bitmap image (130) 15 may be a scanned version of a document (110). 927010(2445412_1) - 5 / 13 Start Select set of regions from bitmap image, the set of regions including a background region of bitmap image. Estimate colour and partial 520 transparency parameters of a first graphical object with partial transparency that overlaps a second graphical object according to colours of the set of regions. Construct geometric models of first 530 and second graphical objects from the set of regions and set the estimated colour and transparency parameters of the graphical objects. Generate dependent upon the geometric models the object representation. End Fig. 5a 927010(2445400 1) |
