• Title/Summary/Keyword: color vision deficiency

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Color vision defectives' color emotion association (색각이상자의 색채 감성 연상)

  • Woo, Sungju;Park, Chongwook
    • Science of Emotion and Sensibility
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    • v.16 no.4
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    • pp.557-566
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    • 2013
  • This study is to investigate the color emotion associations of the color vision defectives, considering that the colors do have an effect on human emotional conditions. To realize this investigation, firstly we selected 100 normal persons (group C)and other 34 color vision defectives(group A), dividing the last group into two small groups as protanomaly group(group P) with 8 persons and deuteranomaly group(group D) with 16 persons. All participants have been offered to select one color from ten colors for each of three positive emotions such as 'favorite', 'happy' and 'friendly' and of three negative emotions like 'sad', 'disliked' and 'awkward'. And they selected another one color for each active and passive emotions. For 'favorite color' the group C selected 'blue' and 'red' while the group A chose 'blue'. For 'happy color' the two groups selected 'yellow'. For 'friendly color' the group C chose 'green', but the group A selected 'blue'. For 'sad color' the group C preferred 'blue', but the group A chose 'purple'. For 'disliked color' all groups selected 'bluish green'. For 'awkward color' the two groups preferred 'bluish green'. For 'active color' all groups selected 'red'. And for 'passive color' the group C chose 'bluish green', but the group A selected 'blue'. Depending on the type of color vision deficiency(group P and group D) some more differences were revealed relatively. These results should be applied to develop some intelligent color conversion technology for enhancing the usability of culture contents for color vision defectives.

The Study on the Deficiency Color of the Elementary School (초등학교 아동들의 색각이상에 대한 고찰)

  • Lee, Hak Jun;Kim, Chang Sik;Kim, Hong Gyun
    • Journal of Korean Ophthalmic Optics Society
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    • v.4 no.1
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    • pp.69-72
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    • 1999
  • Testing of color vision by Ishihara's test was followed in 1306 healthy elementary school students from 8 to 13 years old. The number of color deficiency was 27(2.07%) patients who consisted in 25(3.8%) boys among 654(male) and 2(0.31%) girls among 652(female). The male' s patients were definitely more than female's. The type of color deficiency were consisted in 10(37%) patients of red-green anomaly, 7(26%) patients of anomalous trichromatism, 6(22%) patient of red-green anopia and 4(15%) patients who were difficult to classify. All of patients were normal binocular vision and visual acuity.

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Hardware Digital Color Enhancement for Color Vision Deficiencies

  • Chen, Yu-Chieh;Liao, Tai-Shan
    • ETRI Journal
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    • v.33 no.1
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    • pp.71-77
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    • 2011
  • Up to 10% of the global population suffers from color vision deficiency (CVD) [1], especially deuteranomaly and protanomaly, the conditions in which it is difficult to discriminate between red and green hues. For those who suffer from CVD, their career fields are restricted, and their childhood education is frustrating. There are many optical eye glasses on the market to compensate for this disability. However, although they are attractive due to their light weight, wearing these glasses will decrease visual brightness and cause problems at night. Therefore, this paper presents a supplementary device that comprises a head-mounted display and an image sensor. With the aid of the image processing technique of digital color space adjustment implemented in a high-speed field-programmable gate array device, the users can enjoy enhanced vision through the display without any decrease in brightness.

Development of Assistive Software for color blind to Electronic Documents (전자문서용 색각 장애 보정 소프트웨어 개발)

  • Jang, Young-Gun
    • The KIPS Transactions:PartB
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    • v.10B no.5
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    • pp.535-542
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    • 2003
  • This study is concerned with an assistive technology which reduces color blinds´s confusion when they access electronic documents including color objects in their computers. In this study, 1 restrict the assistive technology would apply to windows operating system, 256 color mode and implement to minimize color distortion which occurs in multi window environments because of color approximation process. As a basic palette, I use a 216 colors web safe palette which the Christine proposed as a standard for color blind, expand it to 256 colors to apply all computer displays using Microsoft Windows as its operating system and implement it as windows application. To test its effectiveness, I use a simulator for dichromats, as results of the test, the developed color vision deficiency correction S/W is effective to reduce the confusion. It is more effective to use the implemented S/W in both of design and client process for electronic documents.

A Novel Color Conversion Method for Color Vision Deficiency using Color Segmentation (색각 이상자들을 위한 컬러 영역 분할 기반 색 변환 기법)

  • Han, Dong-Il;Park, Jin-San;Choi, Jong-Ho
    • Journal of the Institute of Electronics Engineers of Korea SC
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    • v.48 no.5
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    • pp.37-44
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    • 2011
  • This paper proposes a confusion-line separating algorithm in a CIE Lab color space using color segmentation for protanopia and deuteranopia. Images are segmented into regions by grouping adjacent pixels with similar color information using the hue components of the images. To this end, the region growing method and the seed points used in this method are the pixels that correspond to peak points in hue histograms that went through a low pass filter. In order to establish a color vision deficiency (CVD) confusion line map, we established 512 virtual boxes in an RGB 3-D space so that boxes existing on the same confusion line can be easily identified. After that, we checked if segmented regions existed on the same confusion line and then performed color adjustment in an CIE Lab color space so that all adjacent regions exist on different confusion lines in order to provide the best color identification effect to people with CVDs.

Application of Shinkihuan in Hyungsang Medicine (신기환에 대한 형상의학적 고찰)

  • Lee Joo Eun;Kim Pan Joon;Lee Yang Tae
    • Journal of Physiology & Pathology in Korean Medicine
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    • v.16 no.5
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    • pp.840-844
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    • 2002
  • The application of Shinkihuan umder the combination of configuration, color, pulse and symptoms leads to the following conclusions: Shinkihuan is applied to the diseases related with lung, kidney and the spine: difficult urination of old people, shortness of breath, hematuria, loss of voice, distorted vision, deafness of deficiency, hemorrhoids, thirst, carbunde, suppurative infection, children's retardation of walking and noma, etc ... The effect of Shinkihuan is as follows. It nourishes the lung, replenishes the kidney fluid, relieves the phlegm, tranquilizes fever due to deficiency of blood and reinforces the liver. Shinkihuan is appropriate for the persons with the following characteristics in configuration: male, tall, thin, dam-typed, inverted-triangular, prominent nosed and dry.

Clinical Application of Shinkihuan in Hyungsang Medicine (신기환(腎氣丸)에 대(對)한 형상의학적(形象醫學的) 고찰(考察))

  • Kim Pan-Joon
    • Herbal Formula Science
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    • v.10 no.2
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    • pp.251-260
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    • 2002
  • The application of Shinkihuan umder the combination of configuration, color, pulse and symptoms leads to the following conclusions: 1. Shinkihuan is applied to the diseases related with lung, kidney and the spine: difficult urination of old people, shortness of breath, hematuria, loss of voice, distorted vision, deafness of deficiency, hemorrhoids, thirst, carbuncle, suppurative infection, children's retardation of walking and noma, etc... 2. The effect of Shinkihuan is as follows. It nourishes the lung, replenishes the kidney fluid, relieves the phlegm, tranquilizes fever due to deficiency of blood and reinforces the liver. 3. Shinkihuan is appropriate for the persons with the following characteristics in configuration: male, tall, thin, dam-typed, inverted-triangular, prominent nosed and dry.

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Visual Impairment Description for MPEG-21 Digital Item Adaptation (MPEG-21 디지털아이템적응변환을 위한 시각 장애 서술자에 관한 연구)

  • ;Truong Cong Thang
    • Journal of Broadcast Engineering
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    • v.8 no.4
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    • pp.351-364
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    • 2003
  • In this paper, we propose visual Impairment descriptions for MPEG-21 digital item adaptation. The proposed visual impairment descriptions include low vision impairment and color vision deficiency. It is symptom-based description so that the description is systematic enough to sufficiently describe user's any kind of visual impairment characteristics and easy enough to describe for any user with visual impairment. In this paper, we performed some experiments with the proposed description in MPEG-21 digital item adaptation. The experiments showed that the proposed description Is effective to adapt visual resources In digital item for users with visual impairment and to give enhanced visual accessibility to them.

Product Development for Color Vision Deficiency based on Internet (인터넷 기반 색약 보정 제품 개발)

  • Lee, Ho-Jun;Kim, Tae-Hoon;Choi, Sung-Tae;Kim, Cheon-Seog
    • Proceedings of the Korea Information Processing Society Conference
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    • 2007.05a
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    • pp.133-134
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    • 2007
  • 본 논문은 색약자가 웹을 통한 멀티미디어 컨텐츠를 사용시 정상인이 인지하는 것과 동등한 정보를 인지 할 수 있도록 컴퓨터화된 색약 진단 및 보정이 통합된 시스템의 상용화 개발에 관한 것이다. 개발된 시스템은 인증 및 진단을 하는 CVDWeb 서버와 클라이언트에 다운 로드 되어 보정을 하는 WebAgent 로 구성되어 있어 사용이 쉽고, 서버의 부하를 최소로 줄일 수 있으며, 텍스트, 이미지 및 동영상의 실시간 처리 및 원색 보정이 가능하다.

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