Add Stroke Width Transformation (SWT, googleable). Add MSER - see http://www.cs.ubc.ca/~perfo/papers/forssen_cvpr07.pdf for a color method and for a grey scale see "Linear time maximally stable extremal regions" (no publicly available PDF afaict).
Add Stroke Width Transformation (SWT, googleable).
Add MSER - see http://www.cs.ubc.ca/~perfo/papers/forssen_cvpr07.pdf for a color method and for a grey scale see "Linear time maximally stable extremal regions" (no publicly available PDF afaict).