Image analysis – Applications – Document or print quality inspection
Patent
1995-07-12
1999-10-12
Chang, Jon
Image analysis
Applications
Document or print quality inspection
707517, G06K 900
Patent
active
059664550
ABSTRACT:
An image processing apparatus which detects dotted/broken-line separator between image areas in input data. In an area divider 105 which divides image data inputted from an input unit 101 into a plurality of image areas, a labeling unit 106 which generates block areas each containing one or plural connected black pixels; a dotted/broken-line factor extractor 108 extracts block areas having a block area size smaller than a predetermined size, as candidates for dotted/broken-line separator block areas; a block area combiner combines one candidate block area with another candidate block area within a predetermined distance; and a dotted/broken-line separator detector 110 determines whether each combination of candidate block areas satisfies a shape as a separator factor between image areas. Thus, a dotted/broken-line separator between image areas can be correctly detected.
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Proceedings of the International Conference On Pattern Recognition, Atlantic City, New Jersey, Jun. 16-21, 1990, Conference A: Computer Vision and Conference B: Pattern Recognition Systems and Applications, vol. 1, Jun. 16, 1990, Institute of Electrical and Electronics Engineers, pp. 551-556, Shuichi Tsujimoto, et al., "Understanding Multi-Articled Documents", p. 554, Section "3.3 Virtual field separators for universal transformations".
Computer, vol. 25, No. 7, Jul. 1, 1992, pp. 67-71, "DRS: A Workstation-Based Document Recognition System for Text Entry", p. 69, Section "Page structure analysis".
Canon Kabushiki Kaisha
Chang Jon
Patel Jayanti K.
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