• The Monthly Diabetes
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• s.221
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• pp.17-18
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• 2008

백내장은 카메라의 렌즈에 해당하는 우리 눈의 수정체에 혼탁이 생겨서 빛이 잘 통과하지 못하는 질환으로 시력저하, 눈부심, 대비감도(다른 세기의 빛을 구별하는 시각능력) 저하, 색각(색채 식별하는 감각)감퇴 등을 유발하는데, 당뇨병환자에서의 백내장에 대해 알아보자.

• Journal of Biomedical Engineering Research
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• v.21 no.3 s.61
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• pp.321-331
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• 2000

Multiple 15-hue tests were designed and implemented on a PC in the study so as to quickly and quantitatively evaluate color vision acuity. Difficulty of the test was control)ed by the value of CDBACC (color difference between adjacent color chips) calculated using a CIELAB formula. The multiple 15-hue tests consist of eight of the hue tests (test 3-10) and three of the basic color (red, green, blue) tests (test 11-13). The 15 colors used for the hue tests were specified by the 15 color coordinates that were located at a constant distance (d = 2. 3. 5. 7, 10, 20, 30. 40) from white reference in the CIE chromaticity coordinate system and were separated by a constant color difference (CDBACC = 0.75, 1.1, 1.8. 2.5. 3.5. 7.5. 11, 14) from the adjacent chips. The color coordinates for the 15 chips for the basic color tests were the same as those of the 15 points spaced equally by a constant color difference (6.87 for the green color test. 7.27 for the red color test, 7.86 for the blue color test) from the white reference along the axis of red, green and blue. Thirty normal subjects who were not color blind were taken to undergo the multiple 15-hue tests. It was observed that most of the subjects correctly arranged color chips for the tests with CDBACC greater than 5, whereas no one correctly answered for those with CDBACC less than 2. Rapid changes in the number of the subjects correctly arranged took place when CDBACC of the tests was between 2 and 4.5. In the basic color tests, unlike the hue tests having similar values of CDBACC, it was seen that the subjects arranged color chips even less correctly. It was found that JNCD (just noticeable color difference) - a measure of color vision acuity was about 3 in average for the subjects. The JNCD was chosen as the value of the CDBACC of the test for which about $50\%$ of the subjects failed to successfully arrange color chips. ERCCA (error rate of color chips arrangement) for the test with CDBACC the same as the JNCD was shown to be about $20\%$. It is expected that the multi 15-hue tests implemented on a PC in the study will be an economical tool to quickly and quantitatively evaluate color vision acuity and, accordingly, the tests can be used for early diagnosis to massive potential patients suffering from diseases (ex. diabetes, glaucoma) which may induce changes in color vision acuity.

• Proceedings of the Korea Information Processing Society Conference
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• 2004.11a
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• pp.951-954
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• 2004

본 연구는 웹문서에서의 색상 대비에 관한 것이다. 부분적 시각장애자, 노인 및 색각 이상자로 특정한 색의 조합을 인식하는 능력이 떨어지는 경향이 있다. 정상적인에게는 명확하게 대비되는 두 색상이 시각적 결합을 가진 자에게는 잘 구별되지 않을 수 있다. 전자 문서를 저작하는데 있어 색상에 대한 혼란을 줄이는 가장 중요한 방법은 색상의 대비를 이용하는 것이다. 본 논문에서는 아리스, 클리스틴과 마이크로 소프트의 서로 다른 3가지 방식을 비교 분석하여 고찰한다.

• Proceedings of the Korean Society of Computer Information Conference
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• 2011.06a
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• pp.179-182
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• 2011

본 논문의 정보소외계층 위한 웹 접근성 기법에 관한 연구에서는 웹 접근성(web accessibility)의 세부항목을 준수하는 웹사이트를 구축하여 신체적 장애를 가진 사람이 일반 사람과 동일하게 웹사이트를 편리하고 쉽게 이용할 수 있게 구현하고 운영하였다. 웹 사이트가 웹 접근성 규칙을 준수하여 올바르게 설계되어 개발되고 편집되어 있을 때 모든 사용자들은 정보와 기능에 동등하게 접근할 수 있다. 본 논문에서 실험 사이트로 구축하며 준수한 웹 접근성은 시각에 대하여 실명, 색각 이상, 다양한 형태의 저 시력을 포함한 시각 장애와 이동성에 대하여는 파킨슨병, 근육병, 뇌성마비, 뇌졸중과 같은 조건으로 인한 근육 속도 저하, 근육 제어 손실로 말미암아 손을 쓰기 어렵거나 쓸 수 없는 상태와 청각에 대하여는 귀머거리, 청각 장애와 발작에 대하여는 깜박이는 효과나 시각적인 스트로보스코프를 통해 일어나는 간질성 발작과 인지능력에 대하여는 문제 해결과 논리 능력, 집중력, 기억력에 문제가 있는 정신 지체 및 발달 장애, 학습 장애 (난독증, 난산증 등)에 대한 지침 규정이다.

• Journal of the Institute of Electronics and Information Engineers
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• v.52 no.5
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• pp.165-173
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• 2015

People with color vision deficiency (CVD) experience difficulties in discriminating some color combinations and color differences due to the abnormal retinal cone systems. While there exist smartphones with a re-coloring function for CVD, monitors do not provide the re-coloring function. In this paper, we propose a new re-coloring algorithm that adjusts the displayed colors for CVD using a color controller embedded in the monitor. The proposed algorithm converts the hue and saturation in HSV color space, according to the type and strength of the color deficiency. The results of the performance evaluation with a certain number of people with CVD show that the proposed system can convert colors imperceptible into perceptible.

• The Journal of the Korea Contents Association
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• v.21 no.6
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• pp.318-326
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• 2021

This study aims to the effectiveness of physical examination using VR contents to solve problems such as the increase in chronic diseases and shortage of professional manpower in the health care field according to the aging and low birth rate, and to provide efficient healthcare. Therefore, this study implemented a one-stop VR content physical examination system by wearing HTC VIVE Pro VR and a stick controller. The system is from step 1 to step 5, and the final body age is determined and a simple solution is provided through five steps sequentially: color blind test, memory test, audiogram test, reaction speed test, and instantaneous cognitive ability test. In addition, for the one-stop VR content physical examination system developed by this study, as a result of verifying the user satisfaction for normal people who visited the health examination center and VR/AR clinical trial center of certified tertiary hospital in Daejeon, the overall satisfaction and the intention to reuse Was high, and according to gender, there was a significant difference in the 5-step test, and according to the age, there were significant differences in the 4-step test and the 5-step test.