Multimedia Essentials

1.1.1  What is multimedia?
-Multimedia  includes a combination of text, audio, still images, animation, video and interactivity content forms.

1.1.2  Components of multimedia
-Text
-Images
-Animation
-Video
-Audio


Text
-Text allows the users to read and review the information at their own speed.


Images
-graphical information like graphics, photographs, drawing


Animation
-Rapid display of a sequence of images of 2-D or 3-D artwork or model positions in order to create an illusion of movement.

Video
-Video is electronically capturing, recording, processing, strong, transmitting, and reconstructing a sequence of still images.

Audio
-Digital version of sounds to create music.

1.1.4  Multimedia Project and Title


Stock Photography
-Stock photography is the supply of photographs licensed for specific uses.

Slide Show
- A slide is a display of a series of chosen pictures,which is done for artistic or instructional purposes.

Website
-A website is a collection of related wed pages, image , videos or other digital assets that are addressed relative to a common Uniform Resource Locator (URL)

Digital Signage
-Digital signage is a form of electronics display that shows information , advertising and other messages.

1.1.5  Multimedia and Hypermedia 


Multimedia is woven combinations of text, graphic art ,sound ,animation , and video elements.

Hypermedia is used as a logical extension of the term hypertext in which graphics, audio , video , plain text ad hyperlinks intertwine to create a generally non-linear medium .

1.1.6 Why is Multimedia Importance ?

Dynamic content changes can be immediately updated and put on website , allows multiple views at same time.

Interactive content accepts input from the involved user and makes an immediate response to what is happening and modify the process.

User benifits from dynamic and interactive content
-Stimulate interest of end user
-Enhance information retention in end user
-Create deep reflective thinking in end user
-Catch attention of end user
-Engage end user and provide valuable learning support

1.1.7  Who uses multimedia ?
-Multimedia in business
-Multimedia in schools
-Usage of multimedia at home
-Multimedia in public places

1.1.8 Overview of Multimedia Software Tools

Graphics and image editing
-Adobe Photo

Multimedia Authoring
-Adobe Flash
-Adobe Dreamwaever

Digital Audio
-Adobe Soundbooth

Video Editing
-Adobe Premiere
-Adobe After Effects

1.2.1  What is copyright ?


-Copyright protects works like novels , computer programs , plays , sheet music and paintings.

1.2.2  What is protected by copyright ?


-Copyright protects literacy , dramatic , musical and artistic works.

Symbol ©= copyright

1.2.6  Benefits of copyright protection


-Copyright allows you to protect your original material and stops others and stops others from using your work without your permission.


1.2.7  Using copyright material


To obtain consent from copyright owners , one may:
-contact the copyright owners directly
-obtain a licence throogh a collective management organisation

1.2.10 Copyright and the Internet

Web pages
-web pages is considered subject matter protectable by copyright

Downloading Materials From the Internet
-copyright infringement because copying is involved

1.3  Raster Images

Raster Images
- use a rectangle grid of picture elements to represent images . each pixel is assigned a specific location and color value


1.3.1  Properties of Raster images


Document Type


BMP format
-BMP File Format is a raster graphics image file format used to store bitmap digital images.

GIF format
- Graphics Interchange Format (GIF) used to display indexed-color graphics.

JPEG format
-Joint Photographic Experts Group (JPEG) used to display indexed-color graphics. It does not support transparency .

PSD
-Photoshop Format (PSD) file format that supports all Photoshop

Tiff format
-Tagged image File format is a file format for printing
-High in resolution
-Too big in file size for web use.

Bit Depth
-Bit Depth specifies how much color information is avaliable for each pixel in an image.
-Bit Depth of 1 has pixels with two possible values: black and white

Color Mode
- Number of color channels

1) RGB mode (millions of colors)
2)Index color mode (256colors)
3)Grayscale mode (Icludes black, white, and shades of gray.)
4)Bitmap mode (2 colors)

RGB Color Profile
-sRGB is recommended when you prepare images for the web.
-Adobe RGB is recommended when you prepare documments for print.

Selection Tools
-The marquee tools make rectangle, elliptical, single row, and single column selections.
-The Move tool moves selections, layers, and guides.
-The lasso tools make free hand, polygonal, and magnetic selections.
-The Quick Selection tool lets you quickly "paint" a selection using an adjustable round brush tip.
-The magic wand tool selects similarly colored areas.

Crop and slice tools
-The crop tool trims images.
-The slice tool creates slices.
-The slice select tool select slices.

Measuring Tools
-The eyedropper tool samples colors in an image
-The color sampler tool displays color values for up to four areas.
-The ruler tool measures distance, locations, and  angles.
-The count tool counts objects in an image.
-The note tool makes notes that can be attached to an image .

Retouching Tools
-The spot healing brush tool removes blemishes and objects.
-The healing brush tool paints with a sample or pattern to repair imperfections in a image.
-The patch tool repairs imperfections in a selected area of an image using a sample or pattern.
-The red eye tool removes the red reflection caused by a flash.
-The clone stamp tool paints with a sample of an image.
-The pattern stamp tool paints with part of an image as a pattern.
-The eraser tool erases pixels and restores parts of an image to a previously saved state.
-The background eraser tool erases areas to transparency by dragging.
-The magic eraser tool erases solid- colored areas to transparency with a single click.
-The blur tool blurs hard edges in an image.
-The sharpen tool sharpens soft edges in an image.
-The smudge tool smudges data in an image.
-The Dodge tool lightens areas in an image.
-The burn tool darkens areas in an image.
-The sponge tool changes the color saturation of an area.

Painting tools
-The brush tool paints brush strokes.
-The pencil tools paints hard-edged strokes.
-The color replacement tool replaces a selected color with a new color.
-The mixer brush tool simulates realistic painting rechniques such as blending canvas colors and varying paint wetness.
-The history brush tool paints a copy of the selected state or snapshot into the current image window.
-Th art history brush tool paints with stylized strokes that simulate the look of different paint styles, using a selected state or snapshot