By Maureen Stone
Annotation Maureen Stone's box advisor to electronic colour provides a survey of electronic colour with unique emphasis on these fields vital for special effects. The ebook presents the root for realizing colour and its functions, discusses colour media and colour administration and using colour in special effects, together with colour layout and choice. The ebook offers a consultant for an individual who wishes to comprehend and observe electronic colour. An annotated bibliography presents in-depth references for additional research on every one topic Read more...
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Extra resources for A field guide to digital color
Without this constraint, colors that measure the same can appear quite different. Figure 1 is a classic photograph taken by John McCann. In it, two standard color charts are shown, one in the sun and one in the shade. The difference in lighting is such that the measured intensity of the black patch in the sun was exactly the same as the white patch in the shade. That is, two instruments would assign them the same color. However, they clearly look black and white in the context of this photograph.
17 A Field Guide to Digital Color Densitometric Measurement Relative Response Densitometry is such a common form of color measurement that it is described here, even though it is not based on color-matching functions and the principles of CIE colorimetry. A densitometer measures the amount of light transmitted through or reflected from a material and encodes it logarithmically. Density is defined as -log10(T) or -log10(R), where T (transmittance) or R (reflectance) lie in the range (0,1). 0, and the density for a transmittance of 0 is undefined.
Zhang and Wandell. ” SID Journal (1997). D. M. ” Journal of Electronic Imaging, submitted (2003). The appearance of a simple color patch is strongly affected by its size and its background. Combine colors in a scene, and the interactions become even more complex. The visual system is designed to view objects in a world of ever-changing light and shadow. When colors are associated with objects, their appearance becomes influenced by our experience in the world, adding cognitive effects to the perceptual effects of color appearance.