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g l o s s a r y |
Basic
digital terms A - I | J - W
Basic Web terms |
Basic - digital - terms J - W |
Joint
Photographic Experts Group (JPEG) - a
file format that supports 24-bit color and preserves the
broad range and subtle variations in brightness and hue
found in photographs and other continuous-toned images.
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L*a*b
model (device independent) - L*a*b color consists of a luminance or lightness component
(L) and two chromatic components: the a component (from
green to red) and the b component (from blue to yellow). |
| Lossless
compression - the techniques compress image data without removing detail.
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| Masks
- let you isolate and protect areas of an image as you apply
color changes, filters, or other effects to the rest of
the image. |
| Optimization
- process of fine-tuning the display quality and file size
of an image for use on the Web or other online media. |
| Portable
Document Format (PDF) - a
flexible, cross-platform, cross-application file format.
Based on the PostScript imaging model, PDF files accurately
display and preserve fonts, page layouts, and both vector
and bitmap graphics. |
| PICT
- a file format is widely used among Mac OS graphics and
page-layout applications as an intermediary file format
for transferring images between applications. |
| Raster
images (bitmap) - use a grid of colors known as pixels to represent images.
Each pixel is assigned a specific location and color value. |
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word up |
RGB
model (additive colors) - A large percentage of the visible spectrum can be represented
by mixing red, green, and blue (RGB) colored light in
various proportions and intensities. Where the colors
overlap, they create cyan, magenta, yellow, and white. |
Slice
- a
rectangular area of an image that you can use to create
links, rollovers, and animations in the resulting Web
page. Dividing an image into slices lets you selectively
optimize it for Web viewing.
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Tagged-Image
File Format (TIFF) - a flexible bitmap image format supported by virtually
all paint, image-editing, and page-layout applications.
It is used to exchange files between applications and
computer platforms. |
| Unsharp
masking, or USM - a traditional film compositing technique used to sharpen
edges in an image. The Unsharp Mask filter corrects blurring
introduced during photographing, scanning, resampling,
or printing. |
| Vector
graphics - Vectors describe an image according to its geometric characteristics.
They are made up of lines and curves defined by mathematical
objects called vectors. |
| Wabi-sabi - a beauty of things imperfect, impermanent, and incomplete.
It is a beauty of things modest and humble. It is a beauty
of things unconventional. |
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students |
| Self Portraits using only the painting tools in
Photoshop. This is their first project in the class. |
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