Increasing psychophysical evidence suggests that specific image features - or statistics - can appear unpleasant or induce visual discomfort in humans. Such unpleasantness tends to be particularly profound if the image's amplitude spectrum deviates from the regular 1/f spatial-frequency falloff expected in natural scenes. Here, we show that profound unpleasant impressions also result if the orientation spectrum of the image becomes flatter. Using bandpass noise with variable orientation and spatial-frequency bandwidths, we found that unpleasantness ratings decreased with spatial- frequency bandwidth (...) but increased with orientation bandwidth. Similarly, a subsequent experiment revealed that sinusoidal modulations in the amplitude spectrum of 1/f noise along the spatial frequency increased unpleasantness, but modulations along the orientation decreased it. Given that natural scenes tend to have a linear slope along the spatial frequency but an uneven spectrum along the orientation dimension, our opposing results in the spatial-frequency and orientation domains commonly support the idea that images deviating from the spectral regularity of natural scenes can give rise to unpleasant impressions. (shrink)

ResumoEste artigo analisa o reendereçamento da obra Fita verde no cabelo: nova velha estória ao público infantojuvenil. Em 1992, o conto de Guimarães Rosa foi reeditado pela Nova Fronteira, contando com novo projeto gráfico e com as ilustrações de Roger Mello, em edição dedicada ao público jovem. Além de observar o modo como a obra busca o diálogo com esse público em níveis textuais e imagéticos, o estudo concentra-se na análise das ilustrações. Verifica-se a hipótese de que as imagens, em (...) vez de apenas facilitarem a leitura para um público específico, expandem o sentido da obra original contemplando todos os públicos. Como resultado, demonstra-se a potência das imagens e sua capacidade de enriquecer a experiência de leitura do conto de Rosa.Palavras-chave: João Guimarães Rosa. Reendereçamento. Ilustração. AbstractThis article analyzes the readdressing of the work Fita verde no cabelo: nova velha estória to youth literature. In 1992, Guimarães Rosa's short story was reissued by Nova Fronteira. The book had a new graphic project by Roger Mello. This study focuses not only on how the story is looking for dialogue with the young audience in written-text and visual-image levels, but also in the analysis of illustrations. We verify the hypothesis that the images do not facilitate the reading process for a specific audience, for they are in turn ways to expand the meanings of the original work. The potential of those images is demonstrated along with their capacity to enrich the reading experience of Rosa's short story.Keywords: João Guimarães Rosa. Readdressing. Illustration. (shrink)