‘True’ and ‘untrue’ individual recognition: suggestion of a less restrictive definition

2008 ◽  
Vol 23 (7) ◽  
pp. 355 ◽  
Author(s):  
Sandra Steiger ◽  
Josef K. Müller
Keyword(s):  
Individual Recognition ◽  
Restrictive Definition

scholarly journals A Novel Finger Vein Recognition Method Based on Aggregation of Radon-Like Features

Sensors ◽  
2021 ◽  
Vol 21 (5) ◽  
pp. 1885
Author(s):  
Qiong Yao ◽  
Dan Song ◽  
Xiang Xu ◽  
Kun Zou
Keyword(s):  
Feature Extraction ◽  
Extraction Method ◽  
Spatial Information ◽  
Individual Recognition ◽  
Vein Pattern ◽  
Low Contrast ◽  
Feature Extraction Method ◽  
Structure Information ◽  
Finger Vein ◽  
Specific Implementation

Finger vein (FV) biometrics is one of the most promising individual recognition traits, which has the capabilities of uniqueness, anti-forgery, and bio-assay, etc. However, due to the restricts of imaging environments, the acquired FV images are easily degraded to low-contrast, blur, as well as serious noise disturbance. Therefore, how to extract more efficient and robust features from these low-quality FV images, remains to be addressed. In this paper, a novel feature extraction method of FV images is presented, which combines curvature and radon-like features (RLF). First, an enhanced vein pattern image is obtained by calculating the mean curvature of each pixel in the original FV image. Then, a specific implementation of RLF is developed and performed on the previously obtained vein pattern image, which can effectively aggregate the dispersed spatial information around the vein structures, thus highlight vein patterns and suppress spurious non-boundary responses and noises. Finally, a smoother vein structure image is obtained for subsequent matching and verification. Compared with the existing curvature-based recognition methods, the proposed method can not only preserve the inherent vein patterns, but also eliminate most of the pseudo vein information, so as to restore more smoothing and genuine vein structure information. In order to assess the performance of our proposed RLF-based method, we conducted comprehensive experiments on three public FV databases and a self-built FV database (which contains 37,080 samples that derived from 1030 individuals). The experimental results denoted that RLF-based feature extraction method can obtain more complete and continuous vein patterns, as well as better recognition accuracy.

scholarly journals The Possible Role of the Uropygial Gland on Mate Choice in Domestic Chicken

2011 ◽  
Vol 2011 ◽  
pp. 1-5 ◽  
Author(s):  
Atsushi Hirao
Keyword(s):  
Mate Choice ◽  
Visual Cues ◽  
Individual Recognition ◽  
Copulatory Behavior ◽  
Uropygial Gland ◽  
Odor Cues ◽  
Histocompatibility Complex ◽  
Efferent Projections ◽  
Opposite Sex

In avian mating systems, male domestic fowls are polygamous and mate with a number of selected members of the opposite sex. The factors that influence mating preference are considered to be visual cues. However, several studies have indicated that chemosensory cues also affect socio-sexual behavior, including mate choice and individual recognition. The female uropygial gland appears to provide odor for mate choice, as uropygial gland secretions are specific to individual body odor. Chicken olfactory bulbs possess efferent projections to the nucleus taeniae that are involved in copulatory behavior. From various reports, it appears that the uropygial gland has the potential to act as the source of social odor cues that dictate mate choice. In this review, evidence for the possible role of the uropygial gland on mate choice in domestic chickens is presented. However, it remains unclear whether a relationship exists between the uropygial gland and major histocompatibility complex-dependent mate choice.

Memory Does Not Constrain Individual Recognition in a Bird With Song Repertoires

Behaviour ◽  
1992 ◽  
Vol 122 (3-4) ◽  
pp. 274-287 ◽  
Author(s):  
Michael D. Beecher ◽  
Patricia Loesche ◽  
Philip K. Stoddard ◽  
S. Elizabeth Campbell
Keyword(s):  
Individual Recognition ◽  
Song Repertoires

scholarly journals The importance of being familiar: individual recognition and social behavior in sea trout (Salmo trutta)

1998 ◽  
Vol 9 (5) ◽  
pp. 445-451 ◽  
Author(s):  
Johan Höjesjö ◽  
Jörgen I. Johnsson ◽  
Erik Petersson ◽  
Torbjörn Järvi
Keyword(s):  
Social Behavior ◽  
Salmo Trutta ◽  
Individual Recognition ◽  
Sea Trout

scholarly journals Developmental plasticity and the origin of novel communication systems: Individual recognition inPolisteswasps*

Evolution ◽  
2018 ◽  
Vol 72 (12) ◽  
pp. 2728-2735 ◽  
Author(s):  
Elizabeth A. Tibbetts ◽  
Sohini Pandit ◽  
Daniel Nondorf
Keyword(s):  
Communication Systems ◽  
Developmental Plasticity ◽  
Individual Recognition
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