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on 1 December 2016

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Transcript of GRAPHIC

Adobe Photoshop
Usage of Graphic

Still images are vital to multimedia applications.
With the technology, the society have become even more visual. A picture really is worth a thousand words.
One table, chart, graphic, or photograph can illustrate what might take many pages of narrative text to communicate.
Graphics can be used in multimedia applications as
backgrounds, buttons, icons, navigational items, colors, maps, and charts
illustrations to explain concepts, information
, and
moods; and logos to communicate corporate image
Eg : Button with graphic
Eg : Icon with graphic
Student result for FP204 for semester Jun2013; 5 student get A, 6 students get B where 2 of them get B+, 2 students failed in this subject and the rest 17 students get C+.

Graphic in Multimedia Application
Graphic editing software
Categories of graphic
Graphic format
Student result for FP204 for semester Jun2013; 5 student get A, 6 students get B where 2 of them get B+, 2 students failed in this subject and the rest 17 students get C+.
Graphic software editing
Adobe Photoshop interface
Adobe Illustrator
Adobe Illustrator interface
Corel Draw
Corel Draw interface
Xara Photo and Graphic Designer
Xara interface
A bitmap image is an image file format used to store digital images. When enlarged, a bitmap image becomes ‘pixelated’, which means you can see each pixel that makes up the image.
A vector is an image made up of points, lines, curves, and shapes. When enlarged, the image does NOT become pixelated, but looks the same as it did originally, only larger.
Implement images editing

color mode : RGB, CMYK and grayscale
identify images dimension, size, resolution
image compression
bit depth
Images dimension, size and resolution
Image dimension
of an image can be determined by identified the height and width
Eg : 230 x 219
Image size
can be determined by identified the dimension, resolution and the bit depth of an images.
Resolution refers to the number of pixels in an image.
It’s identified by the width and height of the image (images dimension) as well as the total number of pixels in the image
For example, an image that is
pixels wide and
pixels high (1869X825) contains (multiply)
pixels (or 1.5 Megapixels).
Image compression
Image compression is
minimizing the size
in bytes of a graphics file without degrading the quality of the image to an unacceptable level
The objective of image compression is to
reduce irrelevance and redundancy of the image data
in order to be able to store or transmit data in an efficient form.
Advantages of image compression
The reduction in file size allows more images to be stored in a given amount of disk or memory space.
It also reduces the time required for images to be sent over the Internet or downloaded from Web pages.
The best image compression is achieved by using the JPG format, but even if the image is already in this format, the image can usually still make it take up less space, as the JPG format has an adaptive compression scheme that allows saving in varying levels of compression.
Bit depth
Bit depth refers to the
color information stored
in an image.
The higher the bit depth of an image, the more colors it can store.
The simplest image, a 1 bit image, can only show two colors, black and white. That is because the 1 bit can only store one of two values, 0 (white) and 1 (black).
An 8 bit image can store 256 possible colors, while a 24 bit image can display about 16 million colors.
Along with an image’s resolution, the bit depth determines the size of the image.
As the bit depth goes up, the size of the image also goes up because more color information has to be stored for each pixel in the image.
because more color information has to be stored for each pixel
For example, an image with a bit depth of 1 has pixels with two possible values: black and white. An image with a bit depth of 8 has 2 , or 256, possible values. Grayscale mode images with a bit depth of 8 have 256 possible gray values.
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