30 Questions
Before creating images in multimedia, it is not necessary to plan your approach using flow charts and storyboards.
False
Vector-drawn objects are always used to create 3-D images.
False
Clip art galleries consist of only graphics and photographs.
False
CorelDraw is a vector graphics software.
True
The type of still images created depends on the display resolution.
True
Bitmaps are a type of vector-drawn image.
False
The PRINT SCREEN button in Windows copies the screen image to the clipboard.
True
Bitmaps are composed of individual dots or picture elements known as pixels or pels.
True
Image editing programs can only enhance and make composite images.
False
Bitmaps can only have one specific bit and color depth.
False
Images can only be scanned from digital sources.
False
Adobe's Illustrator is primarily used for vector graphics.
True
Bitmap images require a plug-in for Web-based display.
False
Vector images are not easily scalable and resizable.
False
Autotracing can be used to convert bitmap images to vector images.
True
Vector graphics can be scaled to any desired size with pixelation.
False
3-D applications provide only x and y axes.
False
Extrusion in 3-D modeling involves rotating a profile of the shape around a defined axis.
False
Panoramic images are created by stitching together a sequence of photos in a straight line.
False
The human eye can differentiate among about 100,000 colours or hues.
False
Quantum theory states that light comes from an atom where an electron passes from a lower to a higher energy level.
False
Computer monitors use subtractive color method to display colors.
False
Ray tracing and Phong shading provide fast rendering of images.
False
Flat shading is the fastest method of rendering images.
True
The CMY color model is used to create color in printing.
True
The HSB color model specifies color as an angle from 0 to 180 degrees on a color wheel.
False
A 32-bit color depth can display a maximum of 16 million colors.
True
Dithering is a process that changes the color value of each pixel to a random color value.
False
Color palettes are only used in Macintosh systems.
False
The RGB color model is a 32-bit methodology.
False
Study Notes
Creation of Multimedia Images
- Before creating images in multimedia, plan your approach using flow charts and storyboards, organize available tools, and prepare devices and workspace.
- Still images are a crucial element of a multimedia project, and their type depends on display resolution.
Bitmap Images
- Bitmaps are suited for creating photo-realistic images and are a simple matrix of tiny dots that form an image.
- Bitmapped images can have varying bit and color depths and are made up of individual dots or picture elements known as pixels or pels.
- Bitmaps can be sourced from clip art galleries, bitmap software, capturing and editing images, and scanning images.
Vector Images
- Vector graphics can be scaled to any desired size without pixelation.
- Vector-drawn objects are not easily scalable and resizable, unlike bitmap images.
- Vector images require a plug-in for web-based display, unlike bitmap images.
3-D Drawing and Rendering
- 3-D applications provide x, y, and z axes and adjustable perspective views.
- 3-D animation tools include modeling, extrusion, lathing, rendering, and panormas.
- Rendering uses intricate algorithms to apply user-specified effects, including Gouraud shading, flat shading, and Phong shading.
Colors and Palettes in Multimedia
- Color is the frequency of a light wave within the narrow band of the electromagnetic spectrum, to which the human eye responds.
- The eye can differentiate among about 80,000 colors, or hues, consisting of combinations of red, green, and blue.
Computerized Colors
- Additive color combines colored light sources in three primary colors - red, green, and blue (RGB) for TV and computer monitors.
- Subtractive color combines colored media such as paints or ink, absorbing some parts of the color spectrum and reflecting others back to the eye.
- Monitor-specific colors should be used according to the target audience’s monitor specifications.
- Color models include RGB, HSB, HSL, CMYK, CIE, YIQ, YUV, and YCC.
Color Palettes
- Color palettes are mathematical tables that define the color of pixels displayed on the screen.
- Dithering is a process whereby the color value of each pixel is changed to the closest matching color value in the target palette.
This quiz covers the basics of interactive multimedia, including creating images, colors, and palettes, as well as file types used in multimedia. It also discusses the planning and preparation involved in creating multimedia images.
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