An efficient segmentation algorithm for CAPTCHAs with line cluttering and character warping.
Shih-Yu HuangYeuan-Kuen LeeGraeme BellZhan-He OuPublished in: Multim. Tools Appl. (2010)
Keyphrases
- segmentation algorithm
- automatic segmentation
- image segmentation
- graph cuts
- region growing
- input image
- unsupervised segmentation
- superpixels
- watershed algorithm
- segmentation method
- segmentation quality
- segmentation scheme
- homogeneous regions
- shape prior
- object segmentation
- segmentation result
- image segmentation algorithm
- active shape model
- segmented images
- segmentation procedure
- contour detection
- watershed segmentation
- machine learning
- linear text segmentation
- initial segmentation
- partial occlusion
- computer vision