Multispectral anti-spoofing and liveness detection based on the front-view camera and the screen of a smartphone

Author(s):  
Kaylin McQuillan ◽  
Wenhan Zheng ◽  
Jun Xia
2021 ◽  
Vol 1871 (1) ◽  
pp. 012046
Author(s):  
Ling Yue ◽  
Chenhong Cao ◽  
Yufeng Li ◽  
Jiangtao Li ◽  
Qi Liu

2021 ◽  
pp. 174702182110097
Author(s):  
Niamh Hunnisett ◽  
Simone Favelle

Unfamiliar face identification is concerningly error prone, especially across changes in viewing conditions. Within-person variability has been shown to improve matching performance for unfamiliar faces, but this has only been demonstrated using images of a front view. In this study, we test whether the advantage of within-person variability from front views extends to matching to target images of a face rotated in view. Participants completed either a simultaneous matching task (Experiment 1) or a sequential matching task (Experiment 2) in which they were tested on their ability to match the identity of a face shown in an array of either one or three ambient front-view images, with a target image shown in front, three-quarter, or profile view. While the effect was stronger in Experiment 2, we found a consistent pattern in match trials across both experiments in that there was a multiple image matching benefit for front, three-quarter, and profile-view targets. We found multiple image effects for match trials only, indicating that providing observers with multiple ambient images confers an advantage for recognising different images of the same identity but not for discriminating between images of different identities. Signal detection measures also indicate a multiple image advantage despite a more liberal response bias for multiple image trials. Our results show that within-person variability information for unfamiliar faces can be generalised across views and can provide insights into the initial processes involved in the representation of familiar faces.


2020 ◽  
Vol 1549 ◽  
pp. 042069
Author(s):  
Xin Li ◽  
Wei Wu ◽  
Tao Li ◽  
Yang Su ◽  
Lilin Yang
Keyword(s):  

2016 ◽  
Vol 55 (6) ◽  
pp. 063111 ◽  
Author(s):  
Chengsheng Yuan ◽  
Zhihua Xia ◽  
Xingming Sun ◽  
Decai Sun ◽  
Rui Lv

1939 ◽  
Vol 39 ◽  
pp. 99-105
Author(s):  
C. Karouzos
Keyword(s):  
The Body ◽  

Payne's work on the Acropolis has given us a new picture of early Attic sculpture—a fresh and dewy garland, one of the finest flowers of which is his revelation of the personality of a supreme artist, the creator of the peplos Kore 679, the Rampin rider, the head 654 (Payne, Archaic Marble Sculpture from the Acropolis, pls. 11, 11a–c, 29–33, 133) and—πρὸς δὲ τόδε μέγα θαῦμα: the finest of all archaic Attic reliefs, the diskophoros Nat. Mus. 38. This last work is not included in Payne's list: and so, convinced though I am that the mere mention of this attribution is sufficient to establish it, I am bound to offer arguments in its support.Let us compare it with the work which stands chronologically closest to it, the head 654. We must keep in mind that, at that period, a relief was not simply a projection on the slab of the side view of the body, but a free composition of the side and front view. We must therefore compare all the aspects of the head 654 in turn with the diskophoros.


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