Usage-Oriented Performance Evaluation for Text Localization Algorithms

The localization of texts in image/video is the first step in a text processing system. Its effect will do great impact on the following processing steps. Although many studies have been done on text localization algorithms, there is not a universally accepted performance evaluation method. In this paper we propose two sets of metrics to evaluate the performance of text localization algorithms in different usage conditions. The metrics also consider the text distribution characteristics, and the difficulties of the underlying task. Some experiments on the proposed metrics are also given.