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Published byJohnathan Garrett Modified over 9 years ago
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Multimedia Elements – Text and Graphics
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Text in Multimedia Applications Of all multimedia elements, text is the easiest to manipulate General guidelines: Be concise Use appropriate fonts Consider different type styles Be consistent Make the text readable Use restraint
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Working with Text Be concise – text fills < ½ screen Large amounts of text Alternatives? - animation, video, narration. Show a preview and allow user to request more Hyper linking Pop-up messages, scroll bars, drop-down menus
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Use Appropriate Type Fonts Decorative Hard to read Used for emphasis Serif Creates illusion of a line and guides the eye across the screen facilitating readability Used on large blocks of text San serif Clean, simple Good for headings
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Examples of: Serif, Sans Serif, and Other Fonts Scanned image: from Multimedia Concepts – James Shuman
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Font Type Styles Type styles: bold, italic, underline Used for emphasis Use for links – hypertext Be consistent Similar headings – typeface, size, style Use same font for similar sections Graphic image for headings Consistency vs. file size
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Make Text Readable - Use Restraint Choose fonts found in most systems Avoid “ransom note” effect Choose only up to four variations of type styles, fonts and sizes
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Creating and Editing Text Word Processor Corel Draw Adobe Illustrator Scanner OCR-Optical Character Recognition
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Using Text on the Internet Microsoft IE and Netscape determine the fonts of your web page To ensure text is displayed in the desired way: Use a font set Use a Cascading Style Sheet Embed it in your Web pages Change the text into an image
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Graphics in Multimedia Applications
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Graphical images - used to add emphasis, direct attention, illustrate concepts, and provide background content Two types of graphics : 1) Draw-type graphics or vector graphics – represent an image as a geometric shape 2) Bitmap graphics – represents the image as an array of dots, called pixels
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Draw Type Graphics Draw type or vector graphics Geometric shape stored as set of instructions Smaller than bitmap Resize, rotate, no distortion No photo quality
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Draw-type Example Scanned image: from Multimedia Concepts – James Shuman
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Bitmap Graphics Bitmaps – array of dots or pixels Color depth per pixel High quality pictures Photo realistic Larger than draw-type File size = pixels x color depth / 8
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Graphic Image File Sizes Image file sizes can become large, you must balance the need for quality images with the need for small file sizes
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Graphics Software Drawing programs – used to create draw- type graphics Paint programs – used to create bitmap images Image editing programs – useful in making changes, or applying textures or patterns to existing images
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Graphics Software Programs Drawing programs – Adobe Illustrator Paint programs – Paint Shop Pro Image-editing programs – Photoshop (does the work of all 3)
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Graphics Programs Features Graphics types Compatibility Graphics files – tiff, jpeg, bmp, gif … Layers Image enhancement Selection tools Color adjustments
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Graphics Programs Features (Cont.) Image manipulation Filters Antialiasing Smoothes edges by blending colors Text support Hardware support Open architecture
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Using Graphics on the Internet Techniques to speed transfer times File compression – reduces the file size of a graphic Load images in stages Use thumbnails Use image editing programs
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Graphic Image Sources Alternative image sources Clip art Stock photographs Video images Still images Scanned images Photo CD’s Screen-capture programs
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Other Resources Some of the sources for font shopping EyeWire (www.eyewire.com) garageFonts (www.garagefonts.com)www.garagefonts.com LetterSpace (www.letterspace.com)www.letterspace.com BitStream (www.bitstream.com)www.bitstream.com MyFonts (www.myfonts.com)www.myfonts.com T26 (www.tw6.com) P22 (www.p22.com) FontHaus (www.fonthaus.com)
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The End University of North Texas Dr. Vicky Cereijo
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