Text saliency evaluation using precision and recall rate measure.

<p>This does not mean texts are not salient. The reason for the low precision is that, our evaluation is pixel-level based and pixels belonging to texts are far less than those belonging to non-texts in natural scene images. This results in, while evaluating the degree of visual saliency of texts for a given degree (e.g. 200 with respect to pixel value from 0 to 255), pixels belonging to texts taking few percentage.