Texte remanié de: Thèse de doctorat--Arts plastiques--Strasbourg 2, 2003. Titre de soutenance : Errances du regard sur les pierres : émergences-effacements. / Bibliogr. p. 279-298.

Thèse de doctorat--Signal et images--Paris--ENST, 2006. / Bibliogr. p. 177-183. Résumé en français et en anglais.

Mémoire de maîtrise--Arts plastiques--Paris I, 1993. / 1993 d'après la déclaration de dépôt légal. Bibliogr. f. 84-87.

Academisch proefschrift--Amsterdam, 1993.

CAFIMF--Ecole normale d'instituteurs--Paris, 1991.

The field of telehealth has developed rapidly in recent years. It provides medical support particularly to those who are living in remote areas and in emergency cases. Although developments in both technology and practice have been rapid, there are still many gaps in our knowledge with regard to the effective application of telehealth. This study investigated human colour perception in telehealth, specifically the colour red as one of the key symptoms when diagnosing different pathologies. The quality of medical images is safety critical when transmitting the symptoms of pathologies in telehealth, as distorted or degraded colours may result in errors. The study focused on the use of digital images in teleconsultation, particularly on images showing cellulitis (bacterial skin infection) and conjunctivitis (red eye) as case studies, as both of these pathologies involve the colour red in their diagnosis. The study proposed and tested the use of an image quality scale, which represented the level of image resolution; a red colour scale, which represented the intensity of redness in an image; and a confidence scale, which represented the levels of confidence that telehealth users had when judging the colour red. The research involved a series of experiments using hypothetico-deductive and formal hypothesis testing with two groups of participants, medical doctors and non-medical participants. The experiments were conducted in collaboration with the local National Health Service (NHS) Accident and Emergency (A&E) department at Aberdeen Royal Infirmary (ARI). Medical experts in ophthalmology and dermatology were also involved in selecting and verifying the relevant images. The study found that doctors and non-doctors were consistent in the majority of the experiments. The accuracy of the participants was demonstrably higher when using a colour scale with pictures, more so for the non-doctor group than the doctor group. It also found that the level of accuracy for both doctors and nondoctors was higher when using red colour scale of three divisions than when using a scale of five divisions. This result was supported by previous studies, which used telehealth for diagnosing extreme cases. The study also found that when the image quality was poor the participants had higher error rates and less consistency in their answers. The study found poor correlation between accuracy, confidence and time for both participant groups. The study found that most participants in both doctor and non-doctor groups had high confidence most of the time, whether the accuracy was high or low. It was also found that medical background or clinical experience had no effect on the accuracy level across the experiment sets. In some cases, doctors with no or little experience had higher accuracy than those with greater experience. This result may have significant implications for the feasibility of involving non-doctors in the management of telehealth systems, especially in tasks not requiring medical skills, such as colour classification. This has the potential to provide a considerable saving in resources and costs for healthcare providers. An auto-evaluation system was introduced, and proposed for further study, in order to improve the current telehealth diagnostic protocol and to avoid or prevent errors by making red colour classification more objective and accurate.

Ce texte constitue une analyse des motivations qui m’ont poussé à réaliser l’œuvre intitulée G.S.B.T.N.C.A.C.S.F.F.M.L.R.S.W.W.O.C.R.R.S.I.S.W.B.W. (2014- ). Cet ouvrage représente l’essentiel de ma recherche et se présente sous la forme d’un montage numérique de très grand format (290 000 x 85 000 pixels), réalisé avec un grand nombre d’images récoltées à l’aide de l’outil de recherche d’images du site web google.com. Prenant comme point de départ mes études en design graphique, il sera révélé comment la perception de l’image que j’y ai développée s’est progressivement érodée depuis les débuts de ma pratique artistique. On constatera que ce changement de perception m’a amené à défier certaines règles du design graphique et à privilégier l’image plurivoque, où le détail foisonne. / The following text focuses on the motivations which brought me to create G.S.B.T.N.C.A.C.S.F.F.M.L.R.S.W.W.O.C.R.R.S.I.S.W.B.W. (2014- ). This single work constitutes the whole of my recent research and came into shape as a digital collage of great size (290 000 x 85 000 pixels). A large number of pictures taken from the internet have been used as material to build this work, most of which were found using google’s image search tool.Beginning with an analysis of my former perception of the image as medium, shaped by my studies in graphic design, this text increasingly reveals how my switch to visual arts helped to corrode the latter, and how it made me appreciate the more polyvocal images inside of which detail is flourishing.

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