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GRAPHICS (File Formats (PCX/PICT (PCX/PICT PCX stands for PiCture eXchange…
GRAPHICS
Graphic Images
Vector
Vector Images
It is comprised of paths, which are defined by a start and end point, along with other points, curves, and angles along the way.
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A path can be a line, a square, a triangle, or a curvy shape.
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They are created by many individual, scalable objects and are defined by mathematical equations rather than pixels
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- A work of graphic art.
- A diagram or image used for illustration, as in a lecture.
- A graphic display generated by a computer or an imaging device
Resolution
image size/ dimensions
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It is usually measured in pixels, but some graphics programs allow you to view and work with your image in the equivalent inches or centimetres
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colour depth
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is either the number of bits used to indicate the colour of a single pixel, in a bitmapped image or video frame buffer, or the number of bits used for each colour component of a single pixel.
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binary digits (Bitmapping), (bits)
eg 8-bit, 16-bit, 24-bit
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A bit has a single binary value, either 0 or 1
Although computers usually provide instructions that can test and manipulate bits, they generally are designed to store data and execute instructions in bit multiples called bytes
In most computer systems, there are eight bits in a byte
The value of a bit is usually stored as either above or below a designated level of electrical charge in a single capacitor within a memory device
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Monitors
A small monitor may have a resolution or 640 x 480, which means there are 640 pixels horizontally across the screen and 480 pixels vertically.
Some other common monitor resolutions are 800 x 600, 1,024 x 768, and 1,280 x 1,024. The higher the resolution, the more that can be displayed on the screen.
Printers
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This measurement is known as dots per inch, or "dpi." The greater the dpi, the better the image clarity
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File Formats
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PCX/PICT
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is an image file format developed by the now-defunct ZSoft Corporation of Marietta, Georgia
PICT is a graphics file format introduced on the original Apple Macintosh computer as its standard metafile format
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JPEG
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Although it can reduce files sizes to about 5% of their normal size, some detail is lost in the compression.
GIF
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is a graphic image on a Web page that moves - for example, a twirling icon or a banner with a hand that waves or letters that magically get larger.
An animated GIF can loop endlessly (and it appears as though your document never finishes arriving) or it can present one or a few sequences and then stop the animation
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PNG
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created as an improved, non-patented replacement for Graphics Interchange Format (GIF), and is the most used lossless image compression format on the Internet.
In a computer, a file format is the layout of a file in terms of how the data within the file is organized
A program that uses the data in a file must be able to recognize and possibly access data within the file
For example, the program that we call a Web browser is able to process and display a file in the HTML file format so that it appears as a Web page, but it cannot display a file in a format designed for Microsoft's Excel program
A particular file format is often indicated as part of a file's name by a file name extension (suffix)
TIFF
One of the most common graphic image formats, TIFF files are commonly used in desktop publishing, faxing, 3-D applications, and medical imaging applications
developed in 1986 by an industry committee chaired by the Aldus Corporation (now part of Adobe Software).
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common format for exchanging raster graphics (bitmap) images between applications programs, including those used for scanner images
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