(精品)用英语学习Graphics_Theory

Click to edit Master title style,Click to edit Master text styles,Second level,Third level,Fourth level,Fifth level,*,Graphics Theory,Learning Objectives,Learn about use of graphics&their importance,Identify what makes a good graphic&why,Recognise different graphic formats,Starter Task,Can you name these graphics and logos below?,1.,2.,3.,4.,5.,6.,8.,9.,10.,11.,12.,7.,What are graphics?,A picture is worth a,thousand words,A graphic is a visual representation of a word/s or occurrence/event,Graphics can be paper-based or electronic,Virtually all graphics today are electronic,Why are they so important?,Eye catching image that captures a persons interest within an instant,Can be more powerful than text,Can be a representation of an organisation,e.g.a company logo or football team badge,File Types,JPEG,JPEG stands for Joint Photographic Experts Group.,It is basically a compression tool for images.,BMP,A bitmap image defines the colour of every pixel in the image.,Good for high quality images but it uses a lot of memory.,File Types,PNG,The Portable Network Graphics(PNG)format is one of the most recent formats.,This format was created as freeware.,GIF,Graphics Interchange Format,GIF is a common way of compacting bitmap images.,Vector,vs,Bitmap,Which graphic loses quality when resizing?,Compression,Lossless Image,Lossy,Image,The software,There are many types of software for image,Manipulation,the most commonly used are:,Jasc,Paint Shop Pro,Macromedia Fireworks,Adobe Photoshop,Pixelation,P,ixelation,is an effect caused by displaying a bitmap at such a large size that individual,pixels,are visible to the eye.,Pixelation 2,Early graphical applications,ran at low resolutions,with a small number of colours,and had visible pixels.The resulting sharp edges gave curved objects and diagonal lines an unnatural appearance.,Anti-Aliasing,Anti-aliasing is the process of blurring sharp edges in pictures to get rid of the jagged edges on lines.After an image is,rendered,some applications automatically anti-alias images.,Original image,Anti aliased image,Your mission!,Name 4 common file types.,Explain what,lossy,and lossless images are.(bitmap&vector based etc),Describe anti-aliasing.,Describe Pixilation and show an example.,