Figure 5From: SWT voting-based color reduction for text detection in natural scene images SWT profiles. (a) SWT ∗ image merged from SWT + and SWT − in Figure 4c, e, respectively. (b) Horizontal SWT profile of (a) and corresponding vertical blocks marked with dashed lines. (c) The top vertical block of (a). (d) Vertical SWT profile of (c).Back to article page