EVV Print Graphics Glossary
There are currently 8 names in this directory beginning with the letter R.
Raster Images
Raster images are made up of pixels, dots of colour that work together to form the image. Photographs are always raster files, as well as most images you see online. Raster images will gradually lose quality as you scale them up, creating a rough, pixelated appearance (as opposed to vector images).
Removable Adhesive
Adhesive backed vinyl designed to be removed after short term applications without damaging surfaces and leaving minimal residue behind. Often uses water-based adhesives instead of solvent-based. Used with exhibition vinyls.
Removal
Depending on the product used, removal can range from easy (low tac short term adhesives) to difficult (solvent based commercial adhesives). Caution should be taken not to damage sensitive surfaces. May involve plastic and metal scrapers, soap and water or strong solvents.
Resampling
Raster images are often resampled when being enlarged in order to lessen the noticeability of pixelation. Resampling can “soften” images, particularly at sharp borders between colors, but when done by a knowledgeable professional it can enlarge an image with very little loss of image quality.
Resolution
A measure of the quality of an image. Print resolution is generally expressed as dpi (the number of pixels per inch, i.e. 300 dpi) and screen resolution is usually expresses as ppi (pixels on the horizontal axis by pixels on the vertical axis, i.e. 800x600).
RGB
RGB stands for the Red-Green-Blue colour profile. The primary colours, called “additive” colours, are used by colour monitor displays, digital cameras, TVs and some colour output devices. Colours are defined by the levels of red, green, and blue measured on a scale from 0-256. The combination and intensities of these three colours can represent the whole spectrum.