Chapter 4: Images

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Chapter 4: Images by Mind Map: Chapter 4: Images

1. Bitmaps are an image format suited for creation of: 1:Photo-realistic images 2:Complex drawings requiring fine detail

2. Vector-drawn graphics -Applications of vector-drawn object -How vector-drawn images work -Vector-drawn images versus bitmaps

2.1. Vector-drawn images are used in the following areas: -Computer-aided design (CAD) programs needed by architects and engineers -Graphic artists designing for the print media

2.2. How vector-drawn images work: -A vector is a line that is described by the location of its two endpoints. -Vector drawing makes use of Cartesian coordinates.

2.3. Vector-drawn images versus bitmaps: -Vector images use less memory space and have a smaller file size as compared to bitmaps. -For the Web, pages that use vector graphics in plug-ins download faster and, when used for animation, draw faster than bitmaps. -Vector objects are easily scalable without loss of resolution or image quality.

3. 3-D drawing and rendering: 1:3-D animation tools 2:Features of a 3-D application 3:Panoramas

3.1. 3-D animation tools: -Daz3D -Form*Z -NewTek′s Lightwave -Autodesk’s Maya -Trimble’s SketchUp

3.2. Features of a 3-D application 1:Modeling - Placing all the elements into 3-D space. 2:Extrusion - The shape of a plane surface extends some distance. 3:Lathing - A profile of the shape is rotated around a defined axis.

4. Understanding natural light and color : 1:Additive color 2:Subtractive color 3:Color models

4.1. Additive color:- red, green, and blue (RGB).

4.2. Subtractive color: In the subtractive color method, color is created by combining colored media such as paints or ink.

4.3. Color palettes : -Palettes are mathematical tables that define the color of pixels displayed on the screen. -The most common palettes are 1-, 4-, 8-, 16-, and 24-bits deep.

5. Still images are generated in two ways: 1:Bitmaps (raster) 2:Vector-drawn graphics

6. Bitmaps: A bitmap is a simple matrix of the tiny dots that form an image and are displayed on a screen or printed

7. Bitmap Software 1:Adobe’s Photoshop and Illustrator 2:Corel’s Painter and CorelDraw

8. Image editing programs enable the user to: -Enhance and make composite images -Alter and distort images -Add and delete elements -Morph (manipulate still images to create animated transformations), allow to smoothly blend two images so that one image seems to melt into the next

9. Image File Types Used  in Multimedia: -Macintosh formats -Windows formats -Cross-platform formats