Analysis Of Form Image Based On Vertex Chain Code

The form recognition is important in document processing by computer. We often take the forms as the carriers of data and information, so there is great potential value in the research of the form analysis and form recognition. Based on the Vertex Chain Code, in this paper, we propose a new algorithm for form-analysis and develop a new format of form file, which is very important for form analysis and saving considerable memory space for form image.When we get image from scanner or digital camera, the image is often skew, so skew detection and skew correction of images for text documents and form documents is the first step for optical character recognition and form analysis. The areas of objects in digital images play an important role in image analysis and pattern recognition. We usual use the method of integral, but for some complicated images and figures, the method may not work well. So many algorithms have proposed to solve this question. But there are some universal problems in these algorithms, for example, long time of calculation.To solve the two questions mentioned above, our group propose two new algorithms, which have been validated by test. One is the skew detection and skew correction of images. The other is the calculation of area of object in digital image.While researching algorithms, we use the Visual C++ developing tool to accomplish the related algorithms on the Windows platform.