منابع مشابه
Colour Indexing Across Illumination
Because the colours in an image convey a lot of information, almost all image database systems support colour content queries. Unfortunately colour based queries do not always return the images that were sought even although there is a good colour match. Such failures are easily explained. We as human observers do not see raw image colours but rather make an interpretation of the colours in an ...
متن کاملIllumination Invariant Colour Recognition
The article describes a colour based recognition system with three novel features. Firstly, the proposed system can operate in environments where spectral characteristics of illumination change in both space and time. Secondly, benefits in terms of speed and quality of output are gained by focusing processing to areas of salient colour. Finally, an automatic model acquisition procedure allows r...
متن کاملShadow Detection based on Colour Segmentation and Estimated Illumination
In this paper we show how to improve the detection of shadows in natural scenes using a novel combination of colour and illumination features. Detecting shadows is useful because they provide information about both light sources and the shapes of objects thereby illuminated. Recent shadow detection methods use supervised machine learning techniques with input from colour and texture features ex...
متن کاملExemplar-Based Colour Constancy and Multiple Illumination
Exemplar-based learning or, equally, nearest neighbour methods have recently gained interest from researchers in a variety of computer science domains because of the prevalence of large amounts of accessible data and storage capacity. In computer vision, these types of technique have been successful in several problems such as scene recognition, shape matching, image parsing, character recognit...
متن کاملEffect of Illumination on Colour Vision Testing with Farnsworth-Munsell 100 Hue Test: Customized Colour Vision Booth versus Room Illumination
PURPOSE To evaluate a customized, portable Farnsworth-Munsell 100 (FM 100) hue viewing booth for compliance with colour vision testing standards and to compare it with room illumination in subjects with normal colour vision (trichromats), subjects with acquired colour vision defects (secondary to diabetes mellitus), and subjects with congenital colour vision defects (dichromats). METHODS Disc...
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ژورنال
عنوان ژورنال: JOURNAL OF THE ILLUMINATING ENGINEERING INSTITUTE OF JAPAN
سال: 1930
ISSN: 0019-2341,1349-838X,2185-1506
DOI: 10.2150/jieij1917.14.7_321