An emergency reaction is required in Africa because HIVIAIDS is a reality which may be regarded as a developing crisis and a catastrophe. Approximately a third of all women in the North-West Province are HIV positive. Because of their vulnerability against HIVIAIDS there arose a need for health service provision to the HIV positive woman to focus specifically on the reduction of the transmission of HIVIAIDS from mother to child. Mother to child transmission is the biggest cause of HIV infection among children. Almost all HIV positive children are infected during pregnancy, labour, childbirth or breastfeeding. Without the necessary preventative measures as many as 25-35% of the children of HIV positive mothers may be infected. The biggest percentage of infections, however, takes place during labour and the birth process. In first world countries the mother has access to choices and facilities to make an informed decision about antiretroviral therapy, as well as the method of birth. In the North-West Province not all these options and facilities are available, and therefore the knowledge and skills of midwives must be deployed to reduce vertical transmission of HIV during the intrapartum practice. It is important that midwives have the necessary knowledge about intrapartum practices and vertical transmission of HIV, in order to distinguish between risky and safe intrapartum practices. The purpose of this research was to determine whether midwives in the Southern region of the North-West Province have sufficient knowledge of intrapartum practices to reduce vertical transmission of HIV, as well as to determine the intrapartum practices in the Southern region of the North-West Province. The ultimate goals, then, were to determine how the national policy should be adapted and implemented in the Southern region of the North-West Province to reduce HIV transmission during intrapartum practices. A quantitive survey design was used. For the data collection a questionnaire and a control list were used. The questionnaire and the control list, which are adapted and based on literature, were submitted to research and subject specialists, after which they were adapted. Permission was obtained for this research from the Department of Health in the North-West Province, the ethics committee of the PU for CHE as well as each provincial hospital in the Southern region in the North-West Province to conduct the research. A purposeful availability sample of midwives working in the Southern region of the North-West Province was used and a random sample was used for auditing the obstetric records. A total of 31 midwives participated as respondents, and 401 obstetrical records were audited. Data analysis was performed by means of a frequency analysis, effect sizes and cross reference. Based on these findings it was concluded that the midwives do have basic knowledge regarding vertical transmission of HIV, but that this knowledge is not reflected in the intrapartum practice. There is uncertainty about certain aspects where the latest research about intrapartum practices are not implemented in practice. Recommendations were accordingly formulated for nursing education, research and practice. This research particularly focused on improving midwives' knowledge about intrapartum practices to reduce the vertical transmission of HIV, so that this knowledge may result in improved intrapartum practice. Recommendations are also made as to how the national policy may be adapted and implemented in the Southern region of the North-West Province. / Thesis (M.Cur.)--North-West University, Potchefstroom Campus, 2004.

The prevalence of HIV infection in pregnant women is still on the rise despite existing preventive programmes aimed at reducing HIV-transmission. Voluntary counselling and testing during pregnancy is the key entry point in the prevention of mother-to-child transmission (Department of Health, 2000:16; Birdsall et al. 2004:3). Women are often diagnosed as being HIV-positive for the first time when they attend antenatal clinics and consent to HIV testing (UNAIDS, 1997). The objective of this study was to determine the pregnant women's experiences of voluntary counselling and testing (VCT) and to explore and describe the impeding and facilitating factors that played a role in their choice whether or not to consent to HIV testing after having received pre-test counselling. By understanding the impeding and facilitating factors that play a role in the pregnant woman's choice to undergo HIV testing, recommendations could be made to possibly improve the uptake of HIV testing among pregnant women. The population studied in this research consisted of pregnant women making use of antenatal clinics in the Potchefstroom sub-district. Purposive sampling was used to select participants with the assistance of mediators who were working in the local clinics and the hospital. The sample size was determined by data saturation, which was reached after 10 interviews. A qualitative design was used and data was collected by means of semi-structured interviews. Data analysis was carried out simultaneously with data collection. In consensus discussions, the researcher and the co-coder reached consensus on the main and sub-themes. The main themes are the facilitating and impeding factors that play a role in the pregnant women's choice to undergo HIV testing. Based on findings, it was concluded that facilitating and impeding factors that play a role in the pregnant woman's choice to HIV testing do indeed exist. Impeding factors identified were: fear of a positive status; fear of stigmatization and discrimination; fear of lack of support; lack of opportunity to consider their choice to undergo HIV testing; lack of trust that confidentiality will indeed be honoured; fear of knowing possible positive HIV-status that can lead to feelings of depression and mental anguish; differences between counsellors' and pregnant women's characteristics. Facilitating factors consist of the desire to be aware of own HIV status; desire to protect the baby; sufficient information and the importance of trust and confidentiality. Recommendations were subsequently made to make HIV counselling and testing services to pregnant women more user-friendly in order to facilitate the pregnant woman in her choice concerning HIV-testing. Heeding these recommendations will possibly lead to more pregnant women's HIV status being known by the time they go into labour. Recommendations were made that pregnant women be counselled for HIV testing during their first antenatal visit and the HIV-testing being offered to them during the second visit. Research findings reveal that most pregnant women need time to consider their choice to undergo HIV testing and to prepare themselves for the test. Most pregnant women felt that they would possibly consent to HIV testing during their second antenatal visit. / Thesis (M.Cur.)--North-West University, Potchefstroom Campus, 2008.

The last few years have seen an increase in the infection rate not only of HIV but also TB. The HIV/AIDS pandemic is increasing rapidly mainly in developing countries with 71 % of infections in the Sub-Saharan region of Africa. South Africa, which forms part of the Sub- Saharan region, has the highest infection rate in the world with 3.2 to 3.4 million people living with HIV/AIDS. People with HIV are especially vulnerable to TB, and HIV pandemic is fuelling an explosive growth in TB cases. The increase in the infection rate of TB and HIV exert increased pressure on health service delivery thus reflecting the serious problem in the country with regard to health service delivery to people co-infected with TB and HlV/AlDS. Health service delivery is also hindered by negative attitudes of health workers that have been reported towards people living with HIV/AIDS. They entertain a biased view of their own risk, considering risk only from occupational exposure and denying the possibility of infection in their private life. These attitudes of health workers decreases the quality of care and support delivered to patient co-infected with TB and HIV. This result in people not disclosing their illness even in cases were treatment is available like TB for the fear of stigmatisation. Hence the problem of stigmatisation escalates into a dilemma for the patient co-infected with TB and HIV. Therefore these patients tend to shy away from health services and isolate themselves due to fear of being stigmatised twice. The need to address TB and HIV together in the light of this dimension is urgent so as to improve the utilization of the health services by people co-infected with Ti3 and HIV. The purpose of this research was to explore and describe the experiences of patients co-infected with TB and HIV regarding stigmatisation by the health workers, to explore and describe the attitudes of health workers towards patients co-infected with TB and HIV, and to formulate guidelines for health workers that will facilitate the health service utilization by patients co-infected with TB and HIV in the Potchefstroom district. The research was conducted in the Potchefstroom district in the North West province of South Africa. A qualitative research design was used to explore and describe the experiences of patients co-infected with TB and HIV regarding stigmatisation by the health workers, and to explore and describe the attitudes of health workers toward co-infected patients. A purposive voluntary sampling method was used to select participants who met the set criteria. Two populations were used, that is the patients co-infected with TB and HIV, and the health workers who were involved in their care. In depth unstructured interviews were conducted with the patient population and semi structured interviews with the health worker population using an interview schedule that was formulated from the background literature. Data was captured on an audiotape, and transcribed verbatim. Field notes were taken immediately after each interview. The researcher and a co-coder did data analysis after data saturation was reached and a consensus was reached on the categories that emerged. From the findings of this research it appeared that there were general perceptions by the patients co-infected with TB and HIV that indicated stigmatisation by the health workers. This perceived stigmatisation was reported as being perpetrated by all categories of health workers. Negative behaviours such as the health workers not having time for the patients and being impatient were reported. Lack of sufficient knowledge was related to these behaviours especially amongst lower categories or non-professional health workers. In spite of the above, the researcher also observed that there was a limited number of health workers who were still being perceived as committed and caring by the patients co-infected with TB and HIV. The researcher concluded that the relationship between the health workers and the patients co-infected with TB and HIV was characterised by conflict. The health workers seemed to perceive the patients co-infected with TB and HIV as stubborn, harsh, abuse alcohol, manipulative and not taking responsibility of their illness. These perceptions lead the health workers to have a negative attitude towards these patients and occasionally came across as unsympathetic towards them. On the other hand the researcher observed that there were other health workers who did not present with negative behaviours towards these patients and tried to understand the reasons for their sometimes-unacceptable behaviours. Recommendations are made for the field of nursing education, community health nursing practice and nursing research with the formulation of guidelines for health workers so as to facilitate the utilization of the health services by the patients co-infected with TB and HIV. The guidelines are discussed under three main categories, namely guidelines for the health workers to facilitate the utilization of the health services by the patients co-infected with TB and HIV, guidelines to improve the utilization of the health services more efficiently and adequately by the patients co-infected with TB and HIV, and guidelines to improve the attitudes of the health workers towards the patients co-infected with TB and HIV with the intention of improving the utilization of the health services by these patients. / Thesis (M.Cur.)--North-West University, Potchefstroom Campus, 2006.

In this dissertation, the argument is the understanding of the beliefs of Black farm workers regarding HIV and Aids and how these beliefs that protect them from being infected, will lead to the formulation of suggestions for a belief-sensitive approach, which can be incorporated by health care professionals in HIV and Aids-prevention programmes for Black farm workers. Several authors stress the fact that if any HIV and Aids programme is to be implemented successfully, the health care profession should strive to know more about the beliefs of the community, in this case Black farm workers, so that there can be sound human relations and effective programmes. Based on the problem statement for this study the following research questions were asked: 1. What are the beliefs of black farm workers regarding HIV and Aids? 2. How do these beliefs protect them from being infected? 3. Based on the answers to the first two questions, what suggestions can be formulated regarding a belief-sensitive approach in HIV and Aids-prevention programmes for Black farm workers? The objectives were in line with these questions, namely to explore and describe the beliefs of Black farm workers regarding HIV and Aids; to explore and describe how these beliefs protect them from being infected; and to formulate recommendations, specifically suggestions regarding a belief-sensitive approach in HIV and Aids-prevention programmes for Black farm workers. The study followed a qualitative, explorative and descriptive approach. A participatory rural appraisal (PRA) approach was used to collect data. 'Lekgotla' was used as a strategy to collect data. The results indicated that Black farm workers do have beliefs about HIV and Aids. Most of the beliefs they uphold protect them from being infected, however there are some marginal beliefs that can put them at risk of being infected. Suggestions, which health care professionals can incorporate in HIV and Aids-prevention programmes for Black farm workers, were formulated based on the results, a literature control and ensuing conclusions. Beliefs of Black farm workers that protect them from being infected could be included in the suggestions for prevention strategies. Health care professionals involved in prevention strategies should actively listen to Black farm workers’ beliefs in order for these strategies to be successful. / Thesis (M.Cur.)--North-West University, Potchefstroom Campus, 2009.

In this dissertation, the argument is the understanding of the beliefs of Black farm workers regarding HIV and Aids and how these beliefs that protect them from being infected, will lead to the formulation of suggestions for a belief-sensitive approach, which can be incorporated by health care professionals in HIV and Aids-prevention programmes for Black farm workers. Several authors stress the fact that if any HIV and Aids programme is to be implemented successfully, the health care profession should strive to know more about the beliefs of the community, in this case Black farm workers, so that there can be sound human relations and effective programmes. Based on the problem statement for this study the following research questions were asked: 1. What are the beliefs of black farm workers regarding HIV and Aids? 2. How do these beliefs protect them from being infected? 3. Based on the answers to the first two questions, what suggestions can be formulated regarding a belief-sensitive approach in HIV and Aids-prevention programmes for Black farm workers? The objectives were in line with these questions, namely to explore and describe the beliefs of Black farm workers regarding HIV and Aids; to explore and describe how these beliefs protect them from being infected; and to formulate recommendations, specifically suggestions regarding a belief-sensitive approach in HIV and Aids-prevention programmes for Black farm workers. The study followed a qualitative, explorative and descriptive approach. A participatory rural appraisal (PRA) approach was used to collect data. 'Lekgotla' was used as a strategy to collect data. The results indicated that Black farm workers do have beliefs about HIV and Aids. Most of the beliefs they uphold protect them from being infected, however there are some marginal beliefs that can put them at risk of being infected. Suggestions, which health care professionals can incorporate in HIV and Aids-prevention programmes for Black farm workers, were formulated based on the results, a literature control and ensuing conclusions. Beliefs of Black farm workers that protect them from being infected could be included in the suggestions for prevention strategies. Health care professionals involved in prevention strategies should actively listen to Black farm workers’ beliefs in order for these strategies to be successful. / Thesis (M.Cur.)--North-West University, Potchefstroom Campus, 2009.

Diss. (sammanfattning) Linköping : Univ., 2004. / Härtill 4 uppsatser.

As Deficiências na Percepção de Cores (DPC) afetam aproximadamente 200 milhões de pessoas em todo o mundo, comprometendo suas habilidades para efetivamente realizar tarefas relacionadas com cores e com visualização. Isto impacta significantemente os âmbitos pessoais e profissionais de suas vidas. Este trabalho apresenta um modelo baseado na fisiologia para simulação da percepção de cores. Além de modelar visão de cores normal, ele também compreende os tipos mais predominantes de deficiências na visão de cores (i.e., protanopia, deuteranopia, protanomalia e deuteranomalia), cujas causas são hereditárias. Juntos estes representam aproximadamente 99.96% de todos os casos de DPC. Para modelar a percepção de cores da visão humana, este modelo é baseado na teoria dos estágios e é derivado de dados reportados em estudos eletrofisiológicos. Ele é o primeiro modelo a consistentemente tratar visão de cores normal, tricromacia anômala e dicromacia de modo unificados. Seus resultados foram validados por avaliações experimentais envolvendo grupos de indivíduos com deficiência na percepção de cores e outros com visão de cores normal. Além disso, ele pode proporcionar a melhor compreensão e um feedback sobre como aperfeiçoar as experiências de visualização por indivíduos com DPC. Ele também proporciona um framework para se testar hipóteses sobre alguns aspectos acerca das células fotoreceptoras na retina de indivíduos com deficiência na percepção de cores. Este trabalho também apresenta uma técnica automática de recoloração de imagens que visa realçar o contraste de cores para indivíduos dicromatas com custo computacional variando linearmente com o número de pixels. O algoritmo proposto pode ser eficientemente implementado em GPUs, e para imagens com tamanhos tipicos ele apresenta performance de até duas ordens de magnitude mais rápida do que as técnicas estado da arte atuais. Ao contrário das abordagens anteriores, a técnica proposta preserva coerência temporal e, portanto, é adequado para recoloração de vídeos. Este trabalho demonstra a efetividade da técnica proposta ao integrá-la a um sistema de visualização e apresentando, pela primeira vez, cenas de visualização recoloridas para dicromatas em tempo-real e com alta qualidade. / Color vision deficiency (CVD) affects approximately 200 million people worldwide, compromising the ability of these individuals to effectively perform color and visualizationrelated tasks. This has a significant impact on their private and professional lives. This thesis presents a physiologically-based model for simulating color perception. Besides modeling normal color vision, it also accounts for the hereditary and most prevalent cases of color vision deficiency (i.e., protanopia, deuteranopia, protanomaly, and deuteranomaly), which together account for approximately 99.96% of all CVD cases. This model is based on the stage theory of human color vision and is derived from data reported in electrophysiological studies. It is the first model to consistently handle normal color vision, anomalous trichromacy, and dichromacy in a unified way. The proposed model was validated through an experimental evaluation involving groups of color vision deficient individuals and normal color vision ones. This model can provide insights and feedback on how to improve visualization experiences for individuals with CVD. It also provides a framework for testing hypotheses about some aspects of the retinal photoreceptors in color vision deficient individuals. This thesis also presents an automatic image-recoloring technique for enhancing color contrast for dichromats whose computational cost varies linearly with the number of input pixels. This approach can be efficiently implemented on GPUs, and for typical image sizes it is up to two orders of magnitude faster than the current state-of-the-art technique. Unlike previous approaches, the proposed technique preserves temporal coherence and, therefore, is suitable for video recoloring. This thesis demonstrates the effectiveness of the proposed technique by integrating it into a visualization system and showing, for the first time, real-time high-quality recolored visualizations for dichromats.

As Deficiências na Percepção de Cores (DPC) afetam aproximadamente 200 milhões de pessoas em todo o mundo, comprometendo suas habilidades para efetivamente realizar tarefas relacionadas com cores e com visualização. Isto impacta significantemente os âmbitos pessoais e profissionais de suas vidas. Este trabalho apresenta um modelo baseado na fisiologia para simulação da percepção de cores. Além de modelar visão de cores normal, ele também compreende os tipos mais predominantes de deficiências na visão de cores (i.e., protanopia, deuteranopia, protanomalia e deuteranomalia), cujas causas são hereditárias. Juntos estes representam aproximadamente 99.96% de todos os casos de DPC. Para modelar a percepção de cores da visão humana, este modelo é baseado na teoria dos estágios e é derivado de dados reportados em estudos eletrofisiológicos. Ele é o primeiro modelo a consistentemente tratar visão de cores normal, tricromacia anômala e dicromacia de modo unificados. Seus resultados foram validados por avaliações experimentais envolvendo grupos de indivíduos com deficiência na percepção de cores e outros com visão de cores normal. Além disso, ele pode proporcionar a melhor compreensão e um feedback sobre como aperfeiçoar as experiências de visualização por indivíduos com DPC. Ele também proporciona um framework para se testar hipóteses sobre alguns aspectos acerca das células fotoreceptoras na retina de indivíduos com deficiência na percepção de cores. Este trabalho também apresenta uma técnica automática de recoloração de imagens que visa realçar o contraste de cores para indivíduos dicromatas com custo computacional variando linearmente com o número de pixels. O algoritmo proposto pode ser eficientemente implementado em GPUs, e para imagens com tamanhos tipicos ele apresenta performance de até duas ordens de magnitude mais rápida do que as técnicas estado da arte atuais. Ao contrário das abordagens anteriores, a técnica proposta preserva coerência temporal e, portanto, é adequado para recoloração de vídeos. Este trabalho demonstra a efetividade da técnica proposta ao integrá-la a um sistema de visualização e apresentando, pela primeira vez, cenas de visualização recoloridas para dicromatas em tempo-real e com alta qualidade. / Color vision deficiency (CVD) affects approximately 200 million people worldwide, compromising the ability of these individuals to effectively perform color and visualizationrelated tasks. This has a significant impact on their private and professional lives. This thesis presents a physiologically-based model for simulating color perception. Besides modeling normal color vision, it also accounts for the hereditary and most prevalent cases of color vision deficiency (i.e., protanopia, deuteranopia, protanomaly, and deuteranomaly), which together account for approximately 99.96% of all CVD cases. This model is based on the stage theory of human color vision and is derived from data reported in electrophysiological studies. It is the first model to consistently handle normal color vision, anomalous trichromacy, and dichromacy in a unified way. The proposed model was validated through an experimental evaluation involving groups of color vision deficient individuals and normal color vision ones. This model can provide insights and feedback on how to improve visualization experiences for individuals with CVD. It also provides a framework for testing hypotheses about some aspects of the retinal photoreceptors in color vision deficient individuals. This thesis also presents an automatic image-recoloring technique for enhancing color contrast for dichromats whose computational cost varies linearly with the number of input pixels. This approach can be efficiently implemented on GPUs, and for typical image sizes it is up to two orders of magnitude faster than the current state-of-the-art technique. Unlike previous approaches, the proposed technique preserves temporal coherence and, therefore, is suitable for video recoloring. This thesis demonstrates the effectiveness of the proposed technique by integrating it into a visualization system and showing, for the first time, real-time high-quality recolored visualizations for dichromats.

The widespread epidemic HIV/AIDS still remains a confirmed and terminal disease without any currable vaccine and therapy. The only means of protection to resist an infection and HIV spread is a patient´s education, motivation and proper prevention, whose essential tool for everybody is getting information. Especially young people are threatened by the attack of that infection, so mainly basic school should participate in the HIV/AIDS prevention. The first aim of my thesis is to find out, whether and what preventive activities are accomplished at basis schools in Pilsner Region. The research work has a qualitative character. The applied method was a questionaire which was sent and applied to 31 organizations associated in Forum of non-governmental organizations at National Comisssion for HIV/AIDS problem solving in 2006. Another applied method was the derived analysis of data and documents. The second aim of my thesis was to find out basic pupil´s knowledge about HIV/AIDS infection. A qualitative research was chosen to achieve objective results. A questionaire was a research method. 319 pupils from 8th and 9th classes created a selective group. HIV/AIDS problems are always included in some school subjects at all the basic schools. Tution of the appropriate topic is provide only by school teachers and outweighs the use of supporting preventive programmes. Increased demands on school teachers education about HIV/AIDS result from that fact. Basis school pupils have basic knowledge about HIV/AIDS infection. Most pupils acquired information about HIV/AIDS at basic schools. Pupils consider a condom to be a hundrer-per-cent protection to resist veneral diseases. Despite the knowledge of this danger pupils don´t feel threatened by HIV/AIDS infection. Results of my thesis proved that as for information handover, the prevention accomplished at basic schools is efficient. Pupils´ have information about HIV/AIDS. If they act up to them even in possible risky situations that is another question. Since it is a serious problem, it seems to be necessary to keep acting this prevention whose part should be not only the information handover, but also the action at pupil´s behaviour and their responsibility.

As Deficiências na Percepção de Cores (DPC) afetam aproximadamente 200 milhões de pessoas em todo o mundo, comprometendo suas habilidades para efetivamente realizar tarefas relacionadas com cores e com visualização. Isto impacta significantemente os âmbitos pessoais e profissionais de suas vidas. Este trabalho apresenta um modelo baseado na fisiologia para simulação da percepção de cores. Além de modelar visão de cores normal, ele também compreende os tipos mais predominantes de deficiências na visão de cores (i.e., protanopia, deuteranopia, protanomalia e deuteranomalia), cujas causas são hereditárias. Juntos estes representam aproximadamente 99.96% de todos os casos de DPC. Para modelar a percepção de cores da visão humana, este modelo é baseado na teoria dos estágios e é derivado de dados reportados em estudos eletrofisiológicos. Ele é o primeiro modelo a consistentemente tratar visão de cores normal, tricromacia anômala e dicromacia de modo unificados. Seus resultados foram validados por avaliações experimentais envolvendo grupos de indivíduos com deficiência na percepção de cores e outros com visão de cores normal. Além disso, ele pode proporcionar a melhor compreensão e um feedback sobre como aperfeiçoar as experiências de visualização por indivíduos com DPC. Ele também proporciona um framework para se testar hipóteses sobre alguns aspectos acerca das células fotoreceptoras na retina de indivíduos com deficiência na percepção de cores. Este trabalho também apresenta uma técnica automática de recoloração de imagens que visa realçar o contraste de cores para indivíduos dicromatas com custo computacional variando linearmente com o número de pixels. O algoritmo proposto pode ser eficientemente implementado em GPUs, e para imagens com tamanhos tipicos ele apresenta performance de até duas ordens de magnitude mais rápida do que as técnicas estado da arte atuais. Ao contrário das abordagens anteriores, a técnica proposta preserva coerência temporal e, portanto, é adequado para recoloração de vídeos. Este trabalho demonstra a efetividade da técnica proposta ao integrá-la a um sistema de visualização e apresentando, pela primeira vez, cenas de visualização recoloridas para dicromatas em tempo-real e com alta qualidade. / Color vision deficiency (CVD) affects approximately 200 million people worldwide, compromising the ability of these individuals to effectively perform color and visualizationrelated tasks. This has a significant impact on their private and professional lives. This thesis presents a physiologically-based model for simulating color perception. Besides modeling normal color vision, it also accounts for the hereditary and most prevalent cases of color vision deficiency (i.e., protanopia, deuteranopia, protanomaly, and deuteranomaly), which together account for approximately 99.96% of all CVD cases. This model is based on the stage theory of human color vision and is derived from data reported in electrophysiological studies. It is the first model to consistently handle normal color vision, anomalous trichromacy, and dichromacy in a unified way. The proposed model was validated through an experimental evaluation involving groups of color vision deficient individuals and normal color vision ones. This model can provide insights and feedback on how to improve visualization experiences for individuals with CVD. It also provides a framework for testing hypotheses about some aspects of the retinal photoreceptors in color vision deficient individuals. This thesis also presents an automatic image-recoloring technique for enhancing color contrast for dichromats whose computational cost varies linearly with the number of input pixels. This approach can be efficiently implemented on GPUs, and for typical image sizes it is up to two orders of magnitude faster than the current state-of-the-art technique. Unlike previous approaches, the proposed technique preserves temporal coherence and, therefore, is suitable for video recoloring. This thesis demonstrates the effectiveness of the proposed technique by integrating it into a visualization system and showing, for the first time, real-time high-quality recolored visualizations for dichromats.