Nowadays, fabric defect detection is mainly operated based on human inspection. This method is a subjective one, depending on a large number of factors that can influence the human observer, such as the intensity of the lights, the fatigue or the experience of the human observer [1]. This is why, in order to reduce the inspection process costs and to increase the products quality, this process ...

Three experiments were performed to examine positional acuity and the role of spatial sampling in central, peripheral and amblyopic vision. In the first experiment, 3-line bisection acuity was compared to grating acuity. In normal foveal vision bisection acuity represents a hyperacuity. In anisometropic amblyopes, bisection acuity is reduced in rough proportion to their grating acuity. In strab...

S.G. still manifests many of the behavior characteristics of an autistic child. Optometric vision care was significant in that it did allow S.G. to develop better visual contact, longer periods of meaningful attentiveness, and to establish some rudimentary relationships with situations and people. His visual contact is still quite limited to things and space at relatively close distances. Binoc...

The authors have approximately 25 years experience in developing machine vision technology for the forest products industry. Based on this experience this paper will attempt to realistically predict what the future holds for this technology. In particular, this paper will attempt to describe some of the benefits this technology will offer, describe how the technology will probably evolve over t...

purpose: vision disorders are closely associated with poverty, particularly blindness. we determined the prevalence of low vision and blindness in different socioeconomic levels. our goal was determination of correlation between socioeconomic determinants and visual acuity in varamin city. methods: this community based study was done on 2737 people over the age of 50 years, living varamin city ...

In four experiments, participants had to detect symmetries or repetitions distributed over two depth planes, under presentation times of 200-1000 ms. Structurally corresponding elements were placed in different planes (Experiments 1a and 1b) or in the same plane (Experiments 2a and 2b). Results suggest (a) an ongoing interaction between regularity cues and depth cues, and (b) that efficient det...

Real-time Registration of Paper Watermarks The aim of this article is to outline the issues involved in the application of machine vision to the automatic extraction and registration of watermarks from continuous web paper. The correct identification and localisation of watermarks are key issues in paper manufacturing. As well as requiring the position of the watermark for defect detection and ...

In this paper we define the content of information in an image and show how it can be computed by taking into account different levels of resolution, in the framework of information theory and the thermodynamics of irreversible transformations. The results thus obtained will eventually be exploited to derive a mechanism for active exploration of visual space suitable to perform a dynamic coupli...