Report on digital graphics1 irene

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Report on digital graphics1 irene

  1. 1. Irene Mickiewicz Btec Media Level 2 20th September Contents Table of figures ....................................................................................................................................... 1 Introduction: ........................................................................................................................................... 2 Bitmap (Raster): ...................................................................................................................................... 2 Vector:..................................................................................................................................................... 3 Factors that effect image quality: ........................................................................................................... 4 Capturing images: ................................................................................................................................... 4 Output: .................................................................................................................................................... 4 Storage: ................................................................................................................................................... 4 Organisation:........................................................................................................................................... 4 Conclusion: .............................................................................................................................................. 5 Table of figures Figure 1 This Image shows a bitmap(raster) image of a deer and zoomed up to the red box the ear and you can see the tiny pixels forming this picture. ............................................................................. 2 Figure 2 This shows a vector image and zoomed up it is still clear compared to a bitmap (raster) image....................................................................................................................................................... 3 Figure 3 This shows a desktop and the different share drives. I’ve got own share drive and in that has folders for the different subjects and in those folders has my work that I’ve done for those lessons. . 5
  2. 2. Introduction: This report will be about what digital graphics are and its digital images or texts that created or on scanned on the computer, and how this relates to producing graphics and images for games. We will be also talking about the two different kind of digital images, vector and bitmap (raster). Also Factors that affect quality, capturing images, output and organisation. Bitmap (Raster): Bitmap images are one of the types of digital graphic images, made up of tiny pixel which makes up an image. The disadvantage of a bitmap (raster) image is that it is resolution dependent which means it cannot be scaled or enlarged without losing quality so it will look unclear and fuzzy. An advantage it’s quick and easy to use. Pixels are the smallest part of a bitmap (raster) image if you zoom far enough into a bitmap (raster) image you can see tiny pixels with each pixels it makes up an image as a following example below with the deer. With Computer backgrounds and any type of technology backgrounds emits red, green and blue light but it can change the levels of each colour red, blue and green so it produces every possible colour on your computer, TV, phone all technology screens. Figure 1 This Image shows a bitmap(raster) image of a deer and zoomed up to the red box the ear and you can see the tiny pixels forming this picture. Common file extensions mostly used are .jpg, .jpeg, .gif, .png, .tif, .tiff, .bmp. Bitmap(raster) images gets used all the time when people take photographs and look through the internet for images they’re searching for. Also Bitmap (raster) emits any type of images and for the backgrounds for all types of technology screens for example computer screens and phone
  3. 3. screens. The types of programmes that can be used on these digital images are paint which is more casual to use and can be used by everyone and photoshopis more used by experts to edit and alter the bitmap (raster) image. Vector: Vector images are another type of the digital graphic images; it’s more made of points, curves and lines. It’s shown through mathematical expressions. Vector images are not made up by pixels so an advantage is its resolution is independent and can be printed out at any resolution and it can be scaled or enlarged without losing any quality in the image. An disadvantage of vector image it takes long to create and the size of the vector files are sometimes too large as the resolution is much higher which makes it harder to send through emails, takes more longer to download and take up more space in a computer’s memory. You will see vector images mostly in banners or big poster on a building that people would want to enlarge without losing clarity and drawings, like illustration and cartoons. Figure 2 This shows a vector image and zoomed up it is still clear compared to a bitmap (raster) image. Files commonly used for vector images are, .ai, .cdr, .ps, .pdfs. A common vector graphic programmes for vector images is Adobe illustrator which you can make a cartoon and story out of and the same to these other common vector graphic programmes core/draw and freehand.
  4. 4. Factors that effect image quality: There are few things which can effect quality of an image. For example compression is when you reduce the size of a file to make it smaller so it can be easier to send to someone else e.g from email. Also resizing can lose quality on an image if it’s bitmap(raster) resizing to big or small can lose quality and you get to see the pixels. Capturing images: There a few ways of getting an image onto a computer without just a digital camera. One there is scanning an imagewhich a person has drawn and has scanned on to a computer but it cannot be resized bigger or smaller without losing quality of the drawn image. Secondly in photoshop there’s digitally drawing an image on a sketchpad with a stylus onto a computer and this image can be resized smaller or bigger as this is a vector image. Lastly there’s using a digital camera it’s a simple process which just takes a photo and gets saved digitally. It’s a bitmap(raster) image so you cannot re-size it bigger or smaller without losing quality. Output: There’s two ways of how an image will be outputted but it depends on the kind of image it needs to be. Outputs:Print(paper), screen&online Print: Printing uses the CYMK colour pallet (cyan, yellow, magneta, black) Screen: Use pixels to display and image, so uses the RGB colour pallet (Red, Green, Blue) Storage: File-size: The larger an image is, or the higher it’s resolution, the larger the file is: *Harder to email *Longer to download *Takes up more space in a computer’s memory Organisation: There are many ways of keeping your desktop and computer clean neat and tidy first there’s making and naming files for example for all your English work you can make a file name it English and keep all your English work in it.
  5. 5. Figure 3This shows a desktop and the different share drives. I’ve got own share drive and in that has folders for the different subjects and in those folders has my work that I’ve done for those lessons. Keeping your files in order and knowing where you need to store and save files is a great way of being organised and by doing this can help you finding what you need and when you need it. Conclusion: This report and researching about digital graphics technology has shown me a lot of different digital images such as in bitmap(raster) and vector images and shown me the way it works with pixels and lots of ways of being organised. This will help me on this course by helping choosing the right images without losing quality so it will be to the right standards on any digital graphics technology for example a game. Also has shown me lots of new things that I’ve never learnt before. Irene Mickiewicz 12C

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