标题：A Novel Label Protuberant Characters Recognition Method Based on WPT and Improved SVD
作者：Han, Wenke; Lu, Changhou; Li, Jianmei; Song, Huaibo
作者机构：[Han, Wenke; Lu, Changhou; Li, Jianmei] Shandong Univ, Dept Mech Engn, Jinan 250061, Peoples R China.; [Song, Huaibo] Northwest A&F Univ, Dept Mech 更多
会议名称：8th World Congress on Intelligent Control and Automation (WCICA)
会议日期：JUL 06-09, 2010
来源：2010 8TH WORLD CONGRESS ON INTELLIGENT CONTROL AND AUTOMATION (WCICA)
关键词：label protuberant characters; WPT; SVD; gray image; character; recognition
摘要：To recognize protuberant characters on the labels, a novel recognition method based on gray image using wavelet packet transform (WPT) and improved Singular Value Decomposition (SVD) is suggested. The images are decomposed by WPT, and then the singular values (SVs) feature and projection feature of approximation images obtained through the above process are combined to form a new eigenvector using weighting coefficient. And the comparisons of recognition experiments are carried out using Euclidean distance. This method not only makes full use of many excellent properties of the SVs feature, but also overcomes the shortcomings of missing useful information and many other problems caused by image binarization. Experiments confirm that the method could effectively improve the recognition rate of characters, and has much better robustness.