Presentation on theme: "Multimedia Mr. Sanchez. Multimedia Defined Integration of text, still and moving images, and sound to communicate. Issues Time Longer downloads Bigger."— Presentation transcript:
Multimedia Mr. Sanchez
Multimedia Defined Integration of text, still and moving images, and sound to communicate. Issues Time Longer downloads Bigger learning curve for designer Search engine unfriendly Balance choices for the purpose Identify the Use Ask Who is your audience and what is your message? How will the setting or interface look? Which multimedia elements fit into the interface and compliment the message? What is the outcome expected?
Words in Multimedia Words can be: Written Spoken Sung
Images in Multimedia Images can be: Drawings Charts Diagrams Paintings Photographs Buttons Animation or video Note: images will be discussed in depth further into this lecture.
Sound in Multimedia Sound, also called audio, can be: Voice-over or narration Sound effects Music
Audio and the Web Delivery Download file Larger file=longer download time Embedded Does not allow download - BAD Streaming Users listen as the connection is made Uses buffer Livecasts File Types.wav,.mp3
Video in Multimedia Video can be: Live Recorded
Video and the Web Requires high bandwidth and player Types Download, streaming Internet TV File Types.avi,.flv,.mov,.mpg,
Multimedia Productions Defined: Storytelling through the use of text, still and moving images, and sound. Types of multimedia productions Presentations Tutorials Games Simulations Web pages
Working with Images Understand image file formats and when to use an image file type.
Image Importance Images… illustrate content are crucial for name recognition and branding provide backdrops for other activities offer a means of navigating a Web site Good Images… are aesthetically pleasing communicate well use minimal bandwidth relevant to the page’s purpose are small files
Digital Imaging Concepts Pixels short for “pixel element” smallest unit displayed by a monitor provide color information
Color Models Color Models handles image colors and display differently chosen based on purpose RGB - red, green, blue used for electronic display mode format: R, G, B in decimal and hexadecimal form or FF0000 CMYK Cyan, Magenta, Yellow, black (K) used for print media Note: never go from CMYK to RGB Grayscale 256 shades of gray each pixel has a brightness value. 0=black, 255=white
Resolution Defined: The number of pixels present in a monitor’s height and width or dots per inch (dpi) The higher the resolution the more detail Monitor Resolutions 800x600, 72 or 96dpi 1024x768, 72 or 96dpi 1162x864, 72 or 96dpi LCD Monitors have fixed resolutions Output resolution Dictated by the output device
Bitmap/Raster Image Vector Image
Graphic Formats Bitmaps/Raster Most common Each color is an individual value Composed of small squares Large images = large file sizes Use for photos, drop shadows, soft or blurry edges Distorts when stretched Sub-types JPG, GIF, PNG Vector Color is a mathematical equation Size changes force mathematical re-calculation Increasing the image does not increase the file size Use for line art, shapes and illustrations Does not distort because color is recalculated Sub-types AI, WMF Original Distorted
File Types – Electronic Media GIF GIF Raster Platform independent Limited to 256 colors Use for broad expanses of color – no photos Supports transparency Lossless format During compression, color info is not lost GIF89a Raster Animated gif Static images together in motion Does not require a plug-in Original Distorted
Image File Formats – Part 2 JPEG (Joint Photographic Experts Group) JPEG Raster Supports 16+ million colors Compressed automatically Results in image degradation Lossy format As compression increases, colors are dropped from the image Will display differently on a MAC
Image File Formats – Part 3 PNG (Portable Networks Graphic) PNG Combines the best of GIF and JPEG Supports compression and high bit depth 280 thousand billion colors Page Description Languages (PDF) Describes the layout of a printed page of graphics and text Requires a Adobe Reader plugin to view online
Image File Formats – Part 4 SVG (Scalable Vector Graphics) Uses XML to describe shapes in 2D Allows the image to become an object Supports animation, fills, and gradients Use for line art and shapes Microsoft uses it to embed images in ed document. Circuit - NPN Transistor npn.xpm
Image File Formats – Print Media Print Media Business cards, brochures, flyers, etc. Formats Eps –Encapsulated Postscript Tif or tiff –Tagged Image File Format Pct –Picture File Print Media files… cannot be used on the Internet are 150+ dpi in resolution