Chapter 4: Images

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

1. Bitmap Software

1.1. Programs

1.1.1. Adobe’s Photoshop and Illustrator

1.1.2. Corel’s Painter and CorelDraw

2. Texture

2.1. refers to the properties held and sensations caused by the external surface of objects received through the sense of touch.

3. 3D drawing and Rendering

3.1. 3D Drawing

3.1.1. Modeling - Placing all the elements into 3-D space.

3.1.2. Extrusion - The shape of a plane surface extends some distance.

3.1.3. Lathing - A profile of the shape is rotated around a defined axis.

3.2. Rendering

3.2.1. Use of intricate algorithms to apply user-specified effects

4. Colors and Palettes

4.1. Additive color

4.1.1. color is created by combining colored light sources in three primary colors - red, green, and blue (RGB).

4.2. Subtractive color

4.2.1. color is created by combining colored media such as paints or ink.

4.2.2. Subtractive color is the process used to create color in printing.

4.3. Dithering

4.3.1. color value of each pixel is changed to the closest matching color value in the target palette.

5. Image File Types

5.1. Macintosh formats

5.2. Windows formats

5.3. Cross-platform formats

5.3.1. JPEG

5.3.2. GIF

5.3.3. PNG

6. Image File Compression

6.1. lossless compression

6.1.1. every single bit of data that was originally in the file remains after the file is uncompressed. All of the information is completely restored

6.2. Lossy compression

6.2.1. reduces a file by permanently eliminating certain information, especially redundant information.

7. Before starting

7.1. Plan your approach

7.1.1. Outline project and graphics ideas first – Make a flowcharts and storyboards.

7.2. Organize the available tools

7.2.1. Most authoring systems provide the tools with which can create the graphic objects of multimedia directly on screen.

7.3. Configure computer workspace

7.3.1. Have multiple monitors, if possible, for lots of screen real estate (viewing area).

8. Still Images

8.1. Generated in two ways

8.1.1. Bitmaps (raster)

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

8.1.1.1.1. Advantages

8.1.1.1.2. Disadvantages

8.1.2. Vector-drawn graphics

8.1.2.1. Advantages

8.1.2.1.1. Vector images use less memory space.

8.1.2.1.2. For the Web, pages that use vector graphics in plug-ins download faster and, when used for animation, draw faster than bitmaps.

8.1.2.1.3. Vector objects are easily scalable without loss of resolution or image quality. Easy to edit the drawings as each object is independent of the other.

8.1.2.2. Disadvantages

8.1.2.2.1. Objects/drawings cannot have texture. cannot be used for photorealistic images.

8.2. Enables

8.2.1. Enhance and make composite images

8.2.2. Alter and distort images

8.2.3. Add and delete elements

8.2.4. Morph (manipulate still images to create animated transformations), allow to smoothly blend two images so that one image seems to melt into the next