Face segmentation using skin-color map in videophone applications

1999 ◽  
Vol 9 (4) ◽  
pp. 551-564 ◽  
Author(s):  
D. Chai ◽  
K.N. Ngan
Keyword(s):  
Skin Color ◽  
Face Segmentation ◽  
Color Map

A Novel Color Face Segmentation Algorithm Using Multi-Feature

2012 ◽  
Vol 532-533 ◽  
pp. 1872-1876
Author(s):  
Dong Mei Wei ◽  
Wei Dong Zhou
Keyword(s):  
Convex Hull ◽  
Skin Color ◽  
Euler Number ◽  
Segmentation Algorithm ◽  
Shape Features ◽  
Edge Image ◽  
Face Segmentation ◽  
The Difference

In the paper, a novel and simple color face segmentation algorithm using multi-features is presented. The regions are completely segmented in the basis of the edge image which is derived from the difference between the dilated image and the eroded image. The candidate face regions are selected by the skin-color and twice shape features, and make the selected regions convex using the convex hull of the set composed by the discrete points in the region. The true face regions are determined by the Euler number of the convex regions finally. The results show that the algorithm is very simple and fast, it is robust to the expression, pose and illumination.

If Looks Could Kill

2020 ◽  
Vol 3 ◽  
pp. 81-84
Author(s):  
Karen Chan
Keyword(s):  
Skin Color ◽  
Daily Rhythm ◽  
Significant Rate ◽  
Chinese Canadian ◽  
First Time ◽  
The Way

For me, rhythm means having consistency. The piece highlights my own experience with the disruption of my daily rhythm due to COVID-19. The first half shows my routine and interactions prior to COVID-19 while the second half shows my experiences in the present day. Prior to the virus, I had a day to day routine that was filled with noise. Everyday moved quickly and I established a daily rhythm. However, when COVID-19 spread, it changed everything. I felt like I didn’t have a routine anymore because I wasn’t allowed to go anywhere. Time was moving much slower and worst of all, xenophobia was growing at a significant rate. As a Chinese Canadian, this was the first time I truly felt the weight of the color of my skin. COVID-19 changed the way that I consistently assumed that the color of my skin wasn’t something that strangers would significantly care about. However, as I got on a bus, I unintentionally scared a woman simply because of my skin color. From that point, I knew that xenophobia would affect the way people perceived me everyday. The woman was scared of the virus— which in turn was scared of me—and I was scared that she would thwart her anger towards me because I am Chinese. If looks could kill, then the woman and I ironically both feared each other. Now, due to COVID-19, I am adapting to a new routine. A routine where the color of skin rings louder than any other sound.

The visualization and assessment of the anterior surface of the cornea using video keratotopography

The Eye ◽  
2020 ◽  
Vol 22 (130) ◽  
pp. 36-43
Author(s):  
Gulnara Andrienko
Keyword(s):  
Contact Lenses ◽  
Corneal Topography ◽  
Topographic Maps ◽  
Specific Situation ◽  
Main Method ◽  
Pathological Conditions ◽  
Quality Of Vision ◽  
Corneal Shape ◽  
Color Map

Corneal topography is the main method for assessing the regularity of the surface of the cornea. Corneal irregularity leads to a deterioration in its refractive properties and a decrease in the quality of vision. Learning the basics of corneal topography will help determine the choice of a color map for a specific situation, as well as understand and analyze the data associated with these maps. This article describes the main types of topographic maps, various patterns of corneal shape in normal and pathological conditions and how to use the data obtained to design and fit contact lenses. Despite the fact that images may vary depending on topographers used, the information presented in this article is universal.

Prevalence and Risk Factors of Hepatitis C Virus (HCV) in Tehsil Batkhela District Malakand, KPK, Pakistan

2018 ◽  
Vol 9 (06) ◽  
pp. 20251-20256
Author(s):  
Mudassir Khan ◽  
Shahrukh Khan ◽  
Shohra Haider ◽  
Fazal Jalil ◽  
Muhsin Jamal ◽  
...  
Keyword(s):  
Risk Factors ◽  
Hepatitis C Virus ◽  
Hepatitis C ◽  
Skin Color ◽  
Significant Risk ◽  
Rapid Test ◽  
Prevalence Ratio ◽  
Hcv Infection ◽  
Hcv Rna ◽  
Common Symptom

Background: Prevalence of Hepatitis C viral infection and its major risk factors has been found out in population of Batkhela, Khyber Pakhtunkhwa, Pakistan by taking number of volunteers from the interested area. HCV prevalence has not been researched in recent time here in this area, so that’s why we contributed. Materials and Methods: Ab rapid test cassette serum/plasma (USA) kit has been used for the mentioned purpose following by ELISA and finally PCR to find out active infection of virus. ICT positive individuals were reconfirmed by ELISA and then ELISA positive samples were carefully investigated by RT-PCR for Hepatitis C Virus. Results: The study population was of 770 volunteers belonging to the mentioned area of research, 453 males and 317 females. The overall prevalence was found to be 5.32% of HCV in Batkhela. This prevalence ratio was 3.12% in males and 2.20 % in females. 3rd generation ELISA was used to refine ICT positive samples which showed that 37 of the ICT positive samples had antibodies detected by ELISA. To find out active HCV infection, ELISA positive samples were refined by real time PCR which showed 2.98% of prevalence of active HCV infection in Batkhela based on HCV RNA in their blood. Principle Conclusion: Overall prevalence was found 5.32%, contaminated reused syringes and blades at Barbour’s shop, blood transfusion, surgical operations and unhygienic food in stalls etc were found significant risk factors for acquiring HCV infection. Body weakness and pale yellow skin color was common symptom in HCV positive volunteers. Safe sexual activities, blood screening before donation and sterilizing surgical equipment’s can protect us from Hepatitis C Virus.

A Quantitative Analysis of Skin Color Using a Videomicroscope and a Computer.

1993 ◽  
Vol 55 (3) ◽  
pp. 468-475 ◽  
Author(s):  
Hirotsugu TAKIWAKI ◽  
Shiro SHIRAI ◽  
Masahiro UTSUNOMIYA ◽  
Yasumori WATANABE ◽  
Yoshiyuki KANNO
Keyword(s):  
Quantitative Analysis ◽  
Skin Color

Exploring the Facial Color Representative Regions Using the Humanae Images

2020 ◽  
Author(s):  
Yuchun Yan ◽  
Hayan Choi ◽  
Hyeon-Jeong Suk
Keyword(s):  
Image Analysis ◽  
Future Study ◽  
Skin Color ◽  
Color Difference ◽  
Facial Skin ◽  
Female Images ◽  
Gender And Race ◽  
Facial Landmarks

It is difficult to describe facial skin color through a solid color as it varies from region to region. In this article, the authors utilized image analysis to identify the facial color representative region. A total of 1052 female images from Humanae project were selected as a solid color was generated for each image as their representative skin colors by the photographer. Using the open CV-based libraries, such as EOS of Surrey Face Models and DeepFace, 3448 facial landmarks together with gender and race information were detected. For an illustrative and intuitive analysis, they then re-defined 27 visually important sub-regions to cluster the landmarks. The 27 sub-region colors for each image were finally derived and recorded in L ∗ , a ∗ , and b ∗ . By estimating the color difference among representative color and 27 sub-regions, we discovered that sub-regions of below lips (low Labial) and central cheeks (upper Buccal) were the most representative regions across four major ethnicity groups. In future study, the methodology is expected to be applied for more image sources.

Evaluation of Agronomic Traits of Sponge Gourd (Luffa cylindrica) Inbred Lines Under Plastic House in Thua Thien Hue

2017 ◽  
Vol 126 (3E) ◽  
Author(s):  
Trương Thị Hồng Hải ◽  
Nguyễn Thị Diệu Thể ◽  
Phan Thu Thảo
Keyword(s):  
Skin Color ◽  
Agronomic Traits ◽  
Block Design ◽  
Leaf Traits ◽  
Pure Line ◽  
Inbred Lines ◽  
Fruit Shape ◽  
Yield Potential ◽  
High Yield ◽  
Sponge Gourd

In order to establish the pure line of sponge gourd containing aroma feature, we selected the desirable inbred lines by using a self-pollinating method. The present study was investigated to estimate the morphological traits and fruit quality of 6 sponge gourd inbred lines which generated at 4th generation of an aroma Luffa accession B29 under plastic house conditions. The experiment was conducted in a randomized complete block design (RCBD) with three replications, from May to November in 2016. Five plants per replication were examined. The results indicated that all inbred lines could grow well under plastic house conditions. The inbred lines had the same stem and leaf traits; whereas fruit shape, skin color and fruit veins color were observed differently among inbred lines. The aromatic trait was retained in all inbred lines either before or after cooking. The high yield was found in lines BC1 and BC2 by 10.1 tons/ha and 10.7 tons/ha, respectively. These inbred lines should be examined in open field condition to confirm the presence of aromatic trait and yield potential before completion of the procedures for recognition of new Luffa varieties.  

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