J 2018

Sexual dimorphism in human facial expressions by 3D surface processing

JANDOVÁ, Marie a Petra URBANOVÁ

Základní údaje

Originální název

Sexual dimorphism in human facial expressions by 3D surface processing

Název česky

Sexual dimorphism in human facial expressions by 3D surface processing

Autoři

JANDOVÁ, Marie (203 Česká republika, domácí) a Petra URBANOVÁ (203 Česká republika, domácí)

Vydání

HOMO - Journal of Comparative Human Biology, Elsevier, 2018, 0018-442X

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10600 1.6 Biological sciences

Stát vydavatele

Německo

Utajení

není předmětem státního či obchodního tajemství

Odkazy

Impakt faktor

Impact factor: 0.780

Kód RIV

RIV/00216224:14310/18:00103136

Organizační jednotka

Přírodovědecká fakulta

UT WoS

000442714800003

Klíčová slova česky

Grimaces; Facial mimicry; Stereophotogrammetry; Facial variability; FIDENTIS

Klíčová slova anglicky

Grimaces; Facial mimicry; Stereophotogrammetry; Facial variability; FIDENTIS

Příznaky

Mezinárodní význam, Recenzováno
Změněno: 23. 4. 2024 11:22, Mgr. Michal Petr

Anotace

V originále

Human face is a dynamic system where facial expressions can rapidly modify geometry of facial features. Facial expressions are believed to be universal across world populations, but only a few studies have explored whether grimacing is sexually dimorphic and if so to what extent. The present paper explores inter- and intra-individual variation of human facial expressions with respect to individual’s sex based on a set of neutral and expression-varying 3D facial scans. The study sample composed of 20 individuals (10 males and 10 females) for whom 120 scans featuring grimaces associated with disgust, surprise, “u” sound, smile and wide smile were collected by an optical scanner Vectra XT. In order to quantify the dissimilarity among 3D images, surface comparison approach based on aligned 3D meshes and closest point-to-point distances was carried out in Fidentis Analyst application. The study revealed that sexual dimorphism was indeed one of the factors which determined the extent and characteristics of facial deformations recorded for the studied expressions. In order to produce a grimace, males showed a tendency towards extending their facial movements while females were generally more restrained. Furthermore, the facial movements linked to the wide smile and “u” sound were revealed as the most extensive relative to the other expressions, while the smile and surprise were shown indistinguishable from the neutral face.

Česky

Human face is a dynamic system where facial expressions can rapidly modify geometry of facial features. Facial expressions are believed to be universal across world populations, but only a few studies have explored whether grimacing is sexually dimorphic and if so to what extent. The present paper explores inter- and intra-individual variation of human facial expressions with respect to individual’s sex based on a set of neutral and expression-varying 3D facial scans. The study sample composed of 20 individuals (10 males and 10 females) for whom 120 scans featuring grimaces associated with disgust, surprise, “u” sound, smile and wide smile were collected by an optical scanner Vectra XT. In order to quantify the dissimilarity among 3D images, surface comparison approach based on aligned 3D meshes and closest point-to-point distances was carried out in Fidentis Analyst application. The study revealed that sexual dimorphism was indeed one of the factors which determined the extent and characteristics of facial deformations recorded for the studied expressions. In order to produce a grimace, males showed a tendency towards extending their facial movements while females were generally more restrained. Furthermore, the facial movements linked to the wide smile and “u” sound were revealed as the most extensive relative to the other expressions, while the smile and surprise were shown indistinguishable from the neutral face.

Návaznosti

MUNI/A/0892/2015, interní kód MU
Název: Výzkum v aplikované informatice na FI MU (Akronym: VAIFIMU)
Investor: Masarykova univerzita, Výzkum v aplikované informatice na FI MU, DO R. 2020_Kategorie A - Specifický výzkum - Studentské výzkumné projekty
MUNI/A/0897/2016, interní kód MU
Název: Rozsáhlé výpočetní systémy: modely, aplikace a verifikace VI.
Investor: Masarykova univerzita, Rozsáhlé výpočetní systémy: modely, aplikace a verifikace VI., DO R. 2020_Kategorie A - Specifický výzkum - Studentské výzkumné projekty