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1、Graphics TheoryLearning ObjectivesLearn about use of graphics & their importanceIdentify what makes a good graphic & whyRecognise different graphic formatsStarter TaskCan 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 wordsA graphic
2、 is a visual representation of a word/s or occurrence/eventGraphics can be paper-based or electronicVirtually all graphics today are electronicWhy are they so important?Eye catching image that captures a persons interest within an instantCan be more powerful than textCan be a representation of an or
3、ganisation, e.g. a company logo or football team badgeFile TypesJPEGJPEG 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
4、PNGThe Portable Network Graphics (PNG) format is one of the most recent formats. This format was created as freeware. GIFGraphics Interchange FormatGIF is a common way of compacting bitmap images. Vector vs BitmapWhich graphic loses quality when resizing?CompressionLossless ImageLossy ImageThe softw
5、areThere are many types of software for imageManipulation, the most commonly used are:Jasc Paint Shop ProMacromedia FireworksAdobe PhotoshopPixelation Pixelation is an effect caused by displaying a bitmap at such a large size that individual pixels, are visible to the eye.Pixelation 2Early graphical
6、 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 - AliasingAnti-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 imageAnti aliased imageYour 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.
