This paper propose a new reverse engineering approach to convert a form fill format document into a set of related tables that can be used to generate the entity relationship diagram. A relationship between the set of tables is generated. In addition, the entity relationship diagram will be converted into a UML class diagram. However, this approach will be very helpful for researchers and practitioners in Software Engineering field, since most of the reverse engineering approaches are based on source code. This approach is tested by using several word form fill format documents and the results show a high accuracy rates comparing with the forward engineering.
Image segmentation is the most important process in road sign detection and classification systems. In road sign systems, the spatial information of road signs are very important for safety issues. Road sign segmentation is a complex segmentation task because of the different road sign colors and shapes that make it difficult to use specific threshold. Most road sign segmentation studies do good in ideal situations, but many problems need to be solved when the road signs are in poor lighting and noisy conditions. This paper proposes a hybrid dynamic threshold color segmentation technique for road sign images. In a pre-processing step, the authors use the histogram analysis, noise reduction with a Gaussian filter, adaptive histogram equalization, and conversion from RGB space to YCbCr or HSV color spaces. Next, a segmentation threshold is selected dynamically and used to segment the pre-processed image. The method was tested on outdoor images under noisy conditions and was able to accurately segment road signs with different colors (red, blue, and yellow) and shapes.
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