MyMedR

Pixel-based skin colour detection techniques evaluation

Alnned M. Mharib, Mohammad Hamiruce Marhaban, Abdul Rahman Ramli

Pertanika Journal of Science & Technology, 2007;15(2):131-137.

MyJurnal

Skin detection has gained popularity and importance in the computer vision community. It is an essential step for important vision tasks such as the detection, tracking and recognition of face, segmentation of hand for gesture analysis, person identification, as well as video surveillance and filtering of objectionable web images. All these applications are based on the assumption that the regions of the human skin are already located. In the recent past, numerous techniques for skin colour modeling and recognition have been proposed. The aims of this paper are to compile the published pixel-based skin colour detection techniques to describe their key concepts and try to find out and summarize their advantages, disadvantages and characteristic features.

Matched MeSH terms: Face

Skin colour detection based on an adaptive multi thresholding technique

Ahmed M. Mbarib, Mohammad Hamiruce Marhaban, Abdul Rahman Ramli

Pertanika Journal of Science & Technology, 2007;15(2):103-111.

MyJurnal

Skin colour is an important visual cue for face detection, face recogmtlon, hand segmentation for gesture analysis and filtering of objectionable images. In this paper, the adaptive skin color detection model is proposed, based on two bivariate normal distribution models of the skin chromatic subspace, and on image segmentation using an automatic and adaptive multi-thresholding technique. Experimental results on images presenting a wide range of variations in lighting condition and background demonstrate the efficiency of the proposed skin-segmentation algorithm.

Matched MeSH terms: Face

Demodicosis among university medical students in Malaysia and the effects of facial cleanser and moisturizer usage

Isa NH, Loong LW, Fang GH, Mohamad AM, Razali N, Rani NI, et al.

Southeast Asian J. Trop. Med. Public Health, 2011 Nov;42(6):1375-80.

PMID: 22299405

Demodicosis is an infestation of the skin with Demodex, an ectoparasite commonly found on the face. A cross-sectional study was conducted to detect the presence of the ectoparasite and the outcome of facial cleanser and moisturizer usage on its infestation. Universal sampling was performed among 390 medical students, age 20-25 years old in the Klang Valley of Malaysia. The biodata of the participants and information on the use of facial cleanser and moisturizer were obtained through questionnaire. Skin samples were obtained using both skin scraping and cellophane tape method and were subsequently examined directly by microscopy. The results show an overall prevalence of 17.2%. Males (21.5%) were affected more often than females (12.8%) (p = 0.022). There were no significant differences in the prevalence of the ectoparasite among different ethnic groups, age-groups and the presence of existing facial problems among the subjects. A lower infestation rate (11.45%) was found to be associated with the use of a moisturizer (p = 0.033). Both species of ectoparasites that infest man, Demodexfolliculorum and D. brevis, were detected in this study either as single or mixed infestations.

Matched MeSH terms: Face*; Sex Factors

Reliability and validity of MicroScribe-3DXL system in comparison with radiographic cephalometric system: Angular measurements

Barmou MM, Hussain SF, Abu Hassan MI

Int Orthod, 2018 06;16(2):314-327.

PMID: 29673688 DOI: 10.1016/j.ortho.2018.03.005

AIM: The aim of the study was to assess the reliability and validity of cephalometric variables from MicroScribe-3DXL.

MATERIALS AND METHODS: Seven cephalometric variables (facial angle, ANB, maxillary depth, U1/FH, FMA, IMPA, FMIA) were measured by a dentist in 60 Malay subjects (30 males and 30 females) with class I occlusion and balanced face. Two standard images were taken for each subject with conventional cephalometric radiography and MicroScribe-3DXL. All the images were traced and analysed. SPSS version 2.0 was used for statistical analysis with P-value was set at P<0.05.

RESULTS: The results revealed a significant statistic difference in four measurements (U1/FH, FMA, IMPA, FMIA) with P-value range (0.00 to 0.03). The difference in the measurements was considered clinically acceptable. The overall reliability of MicroScribe-3DXL was 92.7% and its validity was 91.8%.

CONCLUSION: The MicroScribe-3DXL is reliable and valid to most of the cephalometric variables with the advantages of saving time and cost. This is a promising device to assist in diverse areas in dental practice and research.

Matched MeSH terms: Face

Fulltext Automated detection of pain levels using deep feature extraction from shutter blinds-based dynamic-sized horizontal patches with facial images

Barua PD, Baygin N, Dogan S, Baygin M, Arunkumar N, Fujita H, et al.

Sci Rep, 2022 Oct 14;12(1):17297.

PMID: 36241674 DOI: 10.1038/s41598-022-21380-4

Pain intensity classification using facial images is a challenging problem in computer vision research. This work proposed a patch and transfer learning-based model to classify various pain intensities using facial images. The input facial images were segmented into dynamic-sized horizontal patches or "shutter blinds". A lightweight deep network DarkNet19 pre-trained on ImageNet1K was used to generate deep features from the shutter blinds and the undivided resized segmented input facial image. The most discriminative features were selected from these deep features using iterative neighborhood component analysis, which were then fed to a standard shallow fine k-nearest neighbor classifier for classification using tenfold cross-validation. The proposed shutter blinds-based model was trained and tested on datasets derived from two public databases-University of Northern British Columbia-McMaster Shoulder Pain Expression Archive Database and Denver Intensity of Spontaneous Facial Action Database-which both comprised four pain intensity classes that had been labeled by human experts using validated facial action coding system methodology. Our shutter blinds-based classification model attained more than 95% overall accuracy rates on both datasets. The excellent performance suggests that the automated pain intensity classification model can be deployed to assist doctors in the non-verbal detection of pain using facial images in various situations (e.g., non-communicative patients or during surgery). This system can facilitate timely detection and management of pain.

Matched MeSH terms: Face*; Databases, Factual

Fulltext Facial three dimensional surface imaging: an overview

Al-Khatib, Ali Rajih

Archives of Orofacial Sciences, 2010;5(1):1-8.

MyJurnal

The surface facial imagings have many applications in medical fields. The recent past has seen great advances in three dimensional imaging which include laser scanning or stereophotogrammetry. Here, we reviewed various systems with reference to image acquisition, advantages and disadvantages. Examples of important clinical application with reference to the human face are also discussed. Finally, a 3D imaging system at Universiti Sains Malaysia (USM) is described.

Matched MeSH terms: Face

Fulltext Craniofacial anthropometric norms of Malaysian Indians

Ngeow WC, Aljunid ST

Indian J Dent Res, 2009 Jul-Sep;20(3):313-9.

PMID: 19884715 DOI: 10.4103/0970-9290.57372

OBJECTIVE: This study was done to establish the craniofacial anthropometric norms of the young adult (18- 25 years) Malaysian Indian.
MATERIALS AND METHODS: The study group consisted of convenient samples of 100 healthy volunteers, with equal number of female and male subjects who had no history of mixed racial-parentage. Twenty-two linear measurements were taken twice from 28 landmarks over six craniofacial regions. The methodology and evaluation of indices of the craniofacial region was adapted from Hajnis et al.
RESULTS: The minimum measurements are always contributed by the female Indian except for the nose height (n-sn), (left) eye fissure length (ex-en), upper vermillion height (ls-sto), and lower vermillion height (sto-li). There is a gender difference in all the measurements except the (left) eye fissure height (independent t-test; P < 0.05). The Malaysian Indians exhibit some North American White Caucasian (NAWC) features in all regions. The cephalic index indicates a brachycephalic or relatively short wide head with a tendency towards mesocephaly. From the low nasal index, the Malaysian Indian female have a nose that is narrow or leptorrhin similar to the NAWCs. The lower value of the upper lip height to mouth width index in the Indian female indicates a relatively shorter upper lip height compared to the mouth width, also similar to the NAWC.
CONCLUSION: This study establishes the craniofacial anthropometric norms of the Malaysian Indian over 22 parameters. Male in general has a significantly higher measurement than female. The Malaysian Indians do exhibit some NAWC features.

Matched MeSH terms: Face/anatomy & histology*

Fulltext 10 "C" in COVID19

Shetty SS, Merchant Y, Shabadi N, Aljunid ST

Oral Surg, 2020 May 29.

PMID: 32837534 DOI: 10.1111/ors.12527

World war "C"1 has set in against an invisible virus. The routes of transmission include *Contact of contaminated objects,*Circulating droplets in the air called aerosols disseminated through *Cough, sneeze, ocular secretions2 from an infected individual.

Matched MeSH terms: Face

Fulltext Craniofacial anthropometric norms of Malays

Ngeow WC, Aljunid ST

Singapore Med J, 2009 May;50(5):525-8.

PMID: 19495526

INTRODUCTION: This study was undertaken to establish the craniofacial anthropometric norms of young adult Malaysian Malays.
METHODS: The study group consisted of convenient samples of 100 healthy volunteers (aged 18-25 years), with an equal number of female and male subjects who had no history of mixed racial parentage. 22 linear measurements were taken twice from 22 landmarks over six craniofacial regions.
RESULTS: The Malays shared many similar sizes of measurements with the Singaporean Chinese. Their left eye fissure length and mouth width (ch-ch) were almost identical for both genders. However, Malay females had an upper lip height (sn-sto) (left) and ear width (pra-pa) similar to Singaporean Chinese females. Six other measurements, viz. the head width (eu-eu), head circumference (on-op), face height (n-gn), lower face height (sn-gn), (left) eye fissure height (ps-pi), cutaneous upper lip height (sn-ls) and cutaneous upper lip height (ls-sto), were 0.4-4.3 mm less in the Malays. Measurements for another four parameters, viz. the length of the head (g-op), biocular width (ex-ex), lower vermillion height (sto-li) and (left) ear length (sa-sba), were 0.5-3.6 mm higher in the Malays. Only three measurements were obviously different; the height of the head (v-n) and intercanthal width (en-en), were lower, and the protrusion of the nasal tip (sn-prn) was higher in the Malays.
CONCLUSION: These findings suggest that three features, i.e. the height of the head (v-n), intercanthal width (en-en) and protrusion of the nasal tip (sn-prn) may be useful in differentiating a Malay face from a Singaporean Chinese one.

Matched MeSH terms: Face/anatomy & histology*

Fulltext Multidrug resistant yeasts in synanthropic wild birds

Lord AT, Mohandas K, Somanath S, Ambu S

Ann Clin Microbiol Antimicrob, 2010;9:11.

PMID: 20307325 DOI: 10.1186/1476-0711-9-11

The aim of this study was to investigate the presence of multidrug resistant yeasts in the faeces of synanthropic wild birds from the Bangsar suburb of Kuala Lumpur.

Matched MeSH terms: Face/microbiology

Fulltext Fabrication of size-tunable nanocrystalline cobalt particles in propylene glycol

Balela, M.D.L., Lockman, Z., Azizan, A., Matsubara, E., Amorsolo , A.V. Jr.

Journal of Nuclear and Related Technologies, 2009;2009(1):190-198.

MyJurnal

Monodispersed and size-tunable nanocrystalline cobalt (Co) particles in the range of 100 to 400 nm are prepared by the reduction of Co(II) species in propylene glycol. Control of the particle size is achieved by varying the initial Co(II) species concentration and by the addition of nucleating agents. Smaller Co particles are produced with increasing amounts of Co(II) species and in the presence of nucleating agents. X-ray diffraction analysis (XRD) shows that the Co particles are predominantly face-centered cubic crystals of about 8-14 nm. The Co particles are also ferromagnetic at room temperature.

Matched MeSH terms: Face

Unsteady free convection flow between two vertical parallel plates with newtonian heating

Fasihah Zulkiflee, Ahmad Qushairi Mohamad, Sharidan Shafie, Arshad Khan

MATEMATIKA, 2019;35(2):117-127.

MyJurnal

Free convection flow in a boundary layer region is a motion that results from the interaction of gravity with density differences within a fluid. These differences occur due to temperature or concentration gradients or due to their composition. Studies per- taining free convection flows of incompressible viscous fluids have received much attention in recent years both theoretically (exact or approximate solutions) and experimentally. The situation where the heat be transported to the convective fluid via a bounding sur- face having finite heat capacity is known as Newtonian heating (or conjugate convective flows). In this paper, the unsteady free convection flow of an incompressible viscous fluid between two parallel plates with Newtonian heating is studied. Appropriate non- dimensional variables are used to reduce the dimensional governing equations along with imposed initial and boundary conditions into dimensionless forms. The exact solutions for velocity and temperature are obtained using the Laplace transform technique. The corresponding expressions for skin friction and Nusselt number are also calculated. The graphical results are displayed to illustrate the influence of various embedded parameters such as Newtonian heating parameter and Grashof number. The results show that the effect of Newtonian heating parameter increases the Nusselt number but reduces the skin friction.

Matched MeSH terms: Face

A systematic review of benzoyl peroxide for acne vulgaris

Mohd Nor NH, Aziz Z

J Dermatolog Treat, 2013 Oct;24(5):377-86.

PMID: 22658322 DOI: 10.3109/09546634.2012.699179

OBJECTIVE: Comparative trials of benzoyl peroxide (BPO) have yielded contradictory results on its effectiveness for acne vulgaris. The aim of the study was to synthesise the evidence for the effectiveness of BPO-containing topical products for facial acne vulgaris.
DESIGN: Systematic review.
METHODS: The Cochrane Central Register of Controlled trials, Cochrane Library, MEDLINE and other relevant databases were searched without publication date or language restriction.
RESULTS: We identified 22 trials involving 2212 participants; 12 trials compared BPO as single agent while the other 10 trials compared BPO in combination products. All trials reported lesion count as the outcome measure but only five trials provided numerical data. However, pooling of data from these trials was inappropriate due to variations between trials in terms of acne severity, comparator used and trial duration. Overall the study quality was fair but most studies had some bias particularly in method of random generation and allocation concealment. Although the results provide some evidence that BPO reduces acne-lesion count, the available evidence is not robust enough for firm conclusions.
CONCLUSIONS: There is no high quality evidence that topical BPO improves facial acne vulgaris, and further research is needed.

Matched MeSH terms: Face

Fulltext Revisiting pedestrian casualties in Malaysia and the escalating new threats

Mohd Syazwan, S., Aqbal, H.A., Azhar, H., Zulhadi, M., Sharifah Allyana, S.M.R., Baba M.D.

Malaysian Journal of Public Health Medicine, 2018;18(102):104-110.

MyJurnal

Pedestrians' fatality trend in road crashes has been improving in recent years though it remains third in rank behind
motorcyclists and car occupants. Based on the statistics, young pedestrians were the most affected group and the
commonest injury regions were head and legs. Pedestrian crashes occurred primarily in rural areas and straight roads
and at low light environment, and often involve cars and motorcycles. In addition to existing issues of careless and
illegal crossing practices, there are potential new hazards face by pedestrian, which are mobile electronic device use
and electric vehicle, especially when crossing roads. Road safety programs and interventions shall consider these new
issues.

Matched MeSH terms: Face

Redness enhances perceived aggression, dominance and attractiveness in men's faces

Stephen ID, Oldham FH, Perrett DI, Barton RA

Evol Psychol, 2012 Aug 17;10(3):562-72.

PMID: 22947678

In a range of non-human primate, bird and fish species, the intensity of red coloration in males is associated with social dominance, testosterone levels and mate selection. In humans too, skin redness is associated with health, but it is not known whether--as in non-human species--it is also associated with dominance and links to attractiveness have not been thoroughly investigated. Here we allow female participants to manipulate the CIELab a* value (red-green axis) of skin to maximize the perceived aggression, dominance and attractiveness of photographs of men's faces, and make two findings. First, participants increased a* (increasing redness) to enhance each attribute, suggesting that facial redness is perceived as conveying similar information about a male's qualities in humans as it does in non-human species. Second, there were significant differences between trial types: the highest levels of red were associated with aggression, an intermediate level with dominance, and the least with attractiveness. These differences may reflect a trade-off between the benefits of selecting a healthy, dominant partner and the negative consequences of aggression.

Matched MeSH terms: Face*

A case of facial burn due to the misuse of garlic face mask for acne

Hisham A, Mohamed Sukur S, Basiron N

Australas J Dermatol, 2018 Nov;59(4):336-337.

PMID: 29377074 DOI: 10.1111/ajd.12789

Matched MeSH terms: Face

Fulltext Does the implicit models of leadership influence the scanning of other-race faces in adults?

Densten IL, Borrowman L

PLoS One, 2017;12(7):e0179058.

PMID: 28686605 DOI: 10.1371/journal.pone.0179058

The current study aims to identify the relationships between implicit leadership theoretical (ILT) prototypes / anti-prototype and five facial features (i.e., nasion, upper nose, lower nose, and upper lip) of a leader from a different race than respondents. A sample of 81 Asian respondents viewed a 30-second video of a Caucasian female who in a non-engaging manner talked about her career achievements. As participants watch the video, their eye movements were recorded via an eye tracking devise. While previous research has identified that ILT influences perceptional and attitudinal ratings of leaders, the current study extends these findings by confirming the impact of ILT on the gaze patterns of other race participants, who appear to adopt system one type thinking. This study advances our understanding in how cognitive categories or schemas influence the physicality of individuals (i.e., eye gaze or movements). Finally, this study confirms that individual ILT factors have a relationship with the eye movements of participants and suggests future research directions.

Matched MeSH terms: Face/physiology*

Fulltext Clinical Patterns Of Oro-facial Infections

Rahman, Z.A.A., Hamimah, H., Bunyarit, S.S.

Ann Dent, 2005;12(1):-.

MyJurnal

The aim of this retrospective study was to study the clinical patterns of oro-facial infections presented and their management (or trends of management) at the Department of Oral and Maxillofacial Surgery, Dental Faculty, University of Malaya. These included the predisposing factors, presentations and management. This study reviewed the oro-facial infection cases over 15 years. The data was obtained from case note reviews of patients using specially designed proforma. A total number of 409 samples were included in this study. Majority of the patients were generally healthy with about 6.6% having diabetes mellitus. The common presentations were pain (47.4%), pus discharges (16.9%) and limitation of mouth opening (12.5%). The major site was in the submandibular region (18.9%) followed by cheek (13.2%). Most of the infections were from odontogenic source (63.2%). Other sources includes cysts (15.4%) and tumours (6.7%). Incision and drainage were the treatment of choice performed on 57.55% of patients. Monoantimicrobial therapy was the treatment instituted in 20.8% of cases.

Matched MeSH terms: Face

Prosthetic management of mid-facial defect with magnet-retained silicone prosthesis

Buzayan MM

Prosthet Orthot Int, 2014 Feb;38(1):62-7.

PMID: 23625838 DOI: 10.1177/0309364613484052

Mid-facial defect is one of the most disfiguring and impairing defects. A design of prosthesis that is aesthetic and stable can be precious to a patient who has lost part of his face due to surgical excision. Prosthesis can restore the patients' self-esteem and confidence, which affects the patients and their life style. The aim of this case report is to describe a technique of mid-facial silicone prosthesis fabrication.

Matched MeSH terms: Face/surgery*

Conidiobolomycosis in a young Malaysian woman showing chronic localized fibrosing leukocytoclastic vasculitis: a case report and meta-analysis focusing on clinicopathologic and therapeutic correlations with outcome

Choon SE, Kang J, Neafie RC, Ragsdale B, Klassen-Fischer M, Carlson JA

Am J Dermatopathol, 2012 Jul;34(5):511-22.

PMID: 22728716 DOI: 10.1097/DAD.0b013e31823db5c1

Conidiobolomycosis (also known as rhinoentomophthoramycosis) is a rare cutaneous/mucosal fungal infection seen mainly in the tropical rain forest regions of the world that can be associated with disfiguring facial elephantiasis, and rarely, death.

Matched MeSH terms: Face

Displaying publications 1 - 20 of 162 in total