| Term | Meaning |
| RCA connector | - a type of cabling for both audio and video |
| Rectilinear lens* | A lens which produces an image in which lines that appear straight to the human eye appear straight in the image. Most lenses fall into this category and all that are 35mm and above will simply because they are within the range of our own eyes. However wide angle lenses capture more than our eyes can see and inherently produce large amounts of distortion. Because of the complex optics of wide angle rectilinear lenses it is not possible to buy a 180 degree rectilinear lens. Generally rectilinear lenses are available down to a focal length of around 14mm (approx. 114 degree VFOV, portrait). |
| Rendering | - transforming video with a certain mathematical calculation. |
| Resolution | - the quality of an image as measured by
its height and width in pixels. The higher the resolution, the more pixels the image contains. |
| RGB | - Red-Green-Blue - a description of the primary colour in an image on a computer monitor. |
| Sampling rate | - sound files are created by taking "samples"
or snapshots of sound waves. As the sampling rate increases, more samples
are taken in a given time interval. The higher the "sampling rate",
the better the quality of the sound. |
| Stitching | - a term used to describe the process of blending or integrating a series of images into one seemless final image. |
| S-Video | - Super-Video - a high quality process for transmitting video |
| Transition | - the change between two video clips |
| Universal serial bus (USB) | - a hardware technology that allows such things as keyboards, cameras, hard drives and other pieces of hardware external to the computer to be easily plugged in so information can be shared. It's a primary way for digital cameras to transfer digital data to a computer. |
| Vectors | - graphics made up of lines, curves and colours.
Graphics created on higher end programs such as Corel Draw 10 are often Vectors. |
| VFOV* | - short for "Vertical Field of View". The visible angle of the area a camera allows you to see. Or if you like, the vertical angle in degrees that a particular image represents of the world. The shorter the lens (i.e. 15mm, 20mm) the greater the angle of view. The longer a lens (i.e. 45mm or 50 mm) the narrower the angle of view. |
| Virtual reality | - the experience the user has (the effect) where they feel like they are manipulating an object or in the case of panoramic images where the user feels a sense of immersion in a place. |
| WAV |
- an uncompressed sound file format for PCs. |
*(These asterisked definitions courtesy of James Rigg-Panoguide.com)
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MultiMedia:
An InDepth Guide for Teachers
Copyright 2002 Regina Public Schools and Saskatchewan Learning |
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