V. CONCLUSION
In this paper, we have presented a method of document
capturing with a single camera. The proposed method is
to extract robust feature points of a paper from an image
to remove perspective distortions. The text regions, which
are obstacles to find features, are removed with decomposed
edge planes according to the directional information of edges.
The Hough transform is applied in each decomposed edge
plane without text regions to find features in the reduced
angle domain of each decomposed edge plane, and the part
of document in an image is recovered without perspective
distortions. The Experimental results show that the proposed
method extracts a document region and removes perspective
distortions successfully from an image. As future works, the
proposed method is expected to be a preprocessing step of
a further higher level processing such as document retrieval.
OCR, etc.