A survey of image registration techniques
ACM Computing Surveys (CSUR)
A Video Based Interface to Textual Information for the Visually Impaired
ICMI '02 Proceedings of the 4th IEEE International Conference on Multimodal Interfaces
Progress in Camera-Based Document Image Analysis
ICDAR '03 Proceedings of the Seventh International Conference on Document Analysis and Recognition - Volume 1
ICPR '98 Proceedings of the 14th International Conference on Pattern Recognition-Volume 2 - Volume 2
A fast and robust image registration method based on an early consensus paradigm
Pattern Recognition Letters
Advanced paper document in a projection display
PCM'04 Proceedings of the 5th Pacific Rim Conference on Advances in Multimedia Information Processing - Volume Part II
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Document scanning is important as a prerequisite stage for analysis and recognition. Recently, a lot of researches about document image acquisition using a camera have been attempted, and the camera can be an alternative input device for document scanning if we can solve some problems such as the low resolution. We use an image registration to overcome the low resolution of a camera. An ordinary image registration method needs a pre-processing such as a camera calibration to reduce distortions on the composite. Therefore the ordinary method has an extra running time. In this paper, we propose a component1-based image registration method to concentrate on reducing the distortions and acquiring a seamless image using a PTZ(pan-tilt-zoom) camera without pre-processing. Because we divide the input document image into each component and generate the registration on text components2 using a text-specific characteristic, this method leads to reduce the object(text) distortions on the composite, and we save the extra running time because this method does not perform the post processing.