Figure 6From: SWT voting-based color reduction for text detection in natural scene images SWT sub-blocks and corresponding histograms. (a) SWT SB + sub-block corresponding to the sub-block in Figure 5c. (b) SWT SB − sub-block corresponding to the sub-block in Figure 5c. (c) SWT histogram of (a) with measure f=425.7. (d) SWT histogram of (b) with measure f=111.5.Back to article page