A Hybrid Binarization Technique for Document Images
نویسندگان
چکیده
In this chapter, a binarization technique specifically designed for historical document images is presented. Existing binarization techniques focus either on finding an appropriate global threshold or adapting a local threshold for each area in order to remove smear, strains, uneven illumination etc. Here, a hybrid approach is presented that first applies a global thresholding technique and, then, identifies the image areas that are more likely to still contain noise. Each of these
منابع مشابه
An Enhancement of Images Using Recursive Adaptive Gamma Correction
The “Adaptive Approach for Historical or Degraded Document Binarization” is that in which Libraries and Museums obtain in large gathering of ancient historical documents printed or handwritten in native languages. Typically, only a small group of people are allowed access to such collection, as the preservation of the material is of great concern. In recent years, libraries have begun to digiti...
متن کاملA Hybrid Image Binarization Technique for Enhancement of Degraded Document Images
Image processing is a process of analysis and manipulation of digital images, which improves the quality of an image. Image binarization is a pre-processing step which improves the quality of the image. Image binarization is used to improve the image quality and it segment the pixel values into two categories; i.e. black pixel as foreground and white pixel as background. In this research work, ...
متن کاملA Survey on Degraded Document Image Binarization Techniques
the method of segmentation in the image binarization technique is the major technique used for the separation of pixel values into dual collections, black as foreground and white as background. The degraded images of a document are segmented by using the image binarization technique in order to acquire the clear images exact to that of the original images of documents. Thresholding process is t...
متن کاملA Review on Global Binarization Algorithms for Degraded Document Images
Several algorithms have previously been proposed for improving the thresholding of degraded document images. No algorithm can solve all types of problems, but some algorithms are better than others for specific situations. This article reviews global binarization algorithms for improving degraded document images, thus indicating their differences and similarities, and also their advantages and ...
متن کاملAncient Document Images Enhancement Using Phase Based Binarization
In this paper, we present a phase-based binarization model for degraded document images, also a post processing method that can improve any binarization method and a ground truth generation tool. Usually, many binarization techniques are implemented in the literature for different types of binarization problems. It include an adaptive image contrast based document image binarization technique t...
متن کامل