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Previous issue date: 2014-09-25 / A percep??o correta de dist?ncias ? importante para a execu??o de diversas tarefas
interativas, como navega??o, sele??o e manipula??o. ? sabido, no entanto, que, em geral,
existe uma significativa compress?o das dist?ncias percebidas em ambientes virtuais,
principalmente quando h? a utiliza??o de Head-Mounted Displays - HMDs. Essa compress?o
de dist?ncias percebidas pode trazer ? aplica??o diversos problemas e at? afetar
negativamente a utilidade de aplica??es que dependem desse julgamento correto. A comunidade
cient?fica, at? o presente, n?o conseguiu determinar as causas do fen?meno da
compress?o da percep??o de dist?ncia em ambientes virtuais. Por esse motivo, foi o objetivo
desse trabalho buscar, atrav?s de experimentos com usu?rios, encontrar pistas sobre
a influ?ncia do field-of-view - FoV - e dos m?todos para estimativas de dist?ncias nessa
compress?o percebida. Para tal, foi feita uma compara??o experimental entre o my3D
e o HMD, utilizando 32 participantes, a fim de encontrar pistas sobre as causas da percep??o
comprimida. Os resultados indicaram que o my3D possui capacidades inferiores
ao HMD, produzindo estimativas piores, em m?dia, em ambos os m?todos de estimativa
testados. As causas apontadas para tal foram o est?mulo incorreto da vis?o perif?rica, o
FoV inferior e a menor imers?o, segundo descrito pelos participantes do experimento / The correct distance perception is important for executing various interactive tasks
such as navigation, selection and manipulation. It is known, however, that, in general,
there is a significant distance perception compression in virtual environments, mainly
when using Head-Mounted Displays - HMDs. This perceived distance compression may
bring various problems to the applications and even affect in a negative way the utility
of those applications that depends on the correct judgment of distances. The scientific
community, so far, have not been able to determine the causes of the distance perception
compression in virtual environments. For this reason, it was the objective of this work
to investigate, through experiments with users, the influence of both the field-of-view -
FoV - and the distance estimation methods on this perceived compression. For that, an
experimental comparison between the my3D device and a HMD, using 32 participants,
seeking to find information on the causes of the compressed perception, was executed.
The results showed that the my3D has inferior capabilities when compared to the HMD,
resulting in worst estimations, on average, in both the tested estimation methods. The
causes of that are believed to be the incorrect stimulus of the peripheral vision of the user,
the smaller FoV and the smaller immersion sense, as described by the participants of the
experiment.
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/19664 |
| Date | 25 September 2014 |
| Creators | Souza, Alyson Matheus de Carvalho |
| Contributors | 47337761368, http://lattes.cnpq.br/4022950700003347, Campos, Andr? Maur?cio Cunha, 00761944770, http://lattes.cnpq.br/7154508093406987, Carvalho, Bruno Motta de, 79228860472, http://lattes.cnpq.br/0330924133337698, Oliveira, Jauvane Cavalcante de, 46168834320, http://lattes.cnpq.br/4054756781423727, Santos, Selan Rodrigues dos |
| Publisher | Universidade Federal do Rio Grande do Norte, PROGRAMA DE P?S-GRADUA??O EM SISTEMAS E COMPUTA??O, UFRN, Brasil |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Source | reponame:Repositório Institucional da UFRN, instname:Universidade Federal do Rio Grande do Norte, instacron:UFRN |
| Rights | info:eu-repo/semantics/openAccess |
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