Detecting Human Heads with their orientations
نویسندگان
چکیده
We propose a two-step method for detecting human heads with their orientations. In the first step, the method employs an ellipse as the contour model of human-head appearances to deal with wide variety of appearances. Our method then evaluates the ellipse to detect possible human heads. In the second step, on the other hand, our method focuses on features inside the ellipse, such as eyes, the mouth or cheeks, to model facial components. The method evaluates not only such components themselves but also their geometric configuration to eliminate false positives in the first step and, at the same time, to estimate face orientations. Our intensive experiments show that our method can correctly and stably detect human heads with their orientations.
منابع مشابه
Detecting Human Heads and Face Orientations Under Dynamic Environment
We propose a two-step method for detecting human heads and estimating face orientations under the dynamic environment. In the first step, the method employs an ellipse as the contour model of humanhead appearances to deal with wide variety of appearances. Our method then evaluates the ellipse to detect possible human heads. In the second step, on the other hand, our method focuses on features, ...
متن کاملWhen are two heads better than one? Visual perception and information transfer affect vigilance coordination in foraging groups
Animals frequently raise their heads to check for danger. In a group, individuals generally raise their heads independently. Earlier models suggest that all group members could gain by coordinating their vigilance, i.e., each member raising its head when others are not. We re-examine these suggestions, considering groups of different sizes, in light of empirical findings that: (1) animals can s...
متن کاملThe benefit of head orientation to speech intelligibility in noise.
Spatial release from masking is traditionally measured with speech in front. The effect of head-orientation with respect to the speech direction has rarely been studied. Speech-reception thresholds (SRTs) were measured for eight head orientations and four spatial configurations. Benefits of head orientation away from the speech source of up to 8 dB were measured. These correlated with predictio...
متن کاملStudents’ Perceived Classroom Climate and Their Achievement Goal Orientations in an Iranian EFL Context
Classroom climate has been demonstrated to associate with individuals’ various attributes and outcomes. Recent research has also confirmed students’ goal orientations deserving to be recognized as a significant achievement-related outcome. In this line, the current study intended to examine the relationship between Iranian EFL students’ perceptions of their classroom environment and their achie...
متن کاملA hybrid model based on machine learning and genetic algorithm for detecting fraud in financial statements
Financial statement fraud has increasingly become a serious problem for business, government, and investors. In fact, this threatens the reliability of capital markets, corporate heads, and even the audit profession. Auditors in particular face their apparent inability to detect large-scale fraud, and there are various ways to identify this problem. In order to identify this problem, the majori...
متن کامل