期刊名称:Journal of Theoretical and Applied Information Technology
印刷版ISSN:1992-8645
电子版ISSN:1817-3195
出版年度:2015
卷号:78
期号:1
出版社:Journal of Theoretical and Applied
摘要:In this paper, we propose a new approach to detect rotated object at distinct angles using the Viola-Jones detector. Our method is based on two main steps: in the first step, we determine the rotated Haar-like feature by any angle (45�, 26.5�, 63.5� and others), this allowed us to obtain a very large number of Haar-like features for use them during the boosting stage. The normal Integral Image is very easy to be calculated, but for rotated Haar-like feature, their computation is practically very hard. For this reason, in second step, we propose a function to calculate an approximate value of rotated Integral Image at a generic angle. To concretize our method, we test our algorithm on two databases (Umist and CMU-PIE), containing a set of faces attributed to many variations in scale, location, orientation (in-plane rotation), pose (out-of-plane rotation), facial expression, lighting conditions, occlusions, etc.
关键词:Haar-Like Feature; Integral Image; Object Detection; Face Detection; Viola & Jones Algorithm.