The Community for Technology Leaders
RSS Icon
Subscribe
Issue No.12 - December (1995 vol.17)
pp: 1191-1201
ABSTRACT
<p><it>Abstract</it>—This paper presents a methodology for evaluation of low-level image analysis methods, using binarization (two-level thresholding) as an example. Binarization of scanned gray scale images is the first step in most document image analysis systems. Selection of an appropriate binarization method for an input image domain is a difficult problem. Typically, a human expert evaluates the binarized images according to his/her visual criteria. However, to conduct an objective evaluation, one needs to investigate how well the subsequent image analysis steps will perform on the binarized image. We call this approach <it>goal-directed evaluation</it>, and it can be used to evaluate other low-level image processing methods as well. Our evaluation of binarization methods is in the context of digit recognition, so we define the performance of the character recognition module as the objective measure. Eleven different locally adaptive binarization methods were evaluated, and Niblack’s method gave the best performance.</p>
INDEX TERMS
Objective evaluation, performance evaluation, binarization, segmentation, document images.
CITATION
Øivind Due Trier, Anil K. Jain, "Goal-Directed Evaluation of Binarization Methods", IEEE Transactions on Pattern Analysis & Machine Intelligence, vol.17, no. 12, pp. 1191-1201, December 1995, doi:10.1109/34.476511
36 ms
(Ver 2.0)

Marketing Automation Platform Marketing Automation Tool