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COMPUTER GRAPHICS

Learn about computer graphics, its types, and file formats. Discover the different methods used to generate images, including non-interaction, interactive, and real-time graphics. Explore the RGB and CMYK color models and their applications.

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COMPUTER GRAPHICS

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  1. COMPUTER GRAPHICS My futurejob

  2. Explanation - COMPUTER GRAPHICS According to the IT dictionary, this is the IT department responsible for the creation of images. The notion of creation refers to both real and imaginary objects. While in the past selected individuals could afford this kind of creation, today it is easily accessible to every computer user.

  3. Types of computer graphics Breakdown by mode of creation : – raster graphics (bitmap) – vector graphics Breakdown by mode of representation: – two-dimensional graphics – three-dimensional graphics

  4. Raster graphics and Vector graphics Raster graphics Presentation of the image by means of a vertical and horizontal grid of appropriately coloured pixels on a computer monitor, printer or other output device. Vector graphics The image is described by means of geometric figures or geometric shapes, placed in a mathematically defined system of coordinates, two or three dimensional respectively.

  5. Two-dimensional graphics and Three-dimensional graphics Two-dimensional graphics : This term may refer both to the computer science department dealing with 2D graphics and the techniques used to process them, and to the digital images themselves, which may consist of from text, graphics and 2D objects. Three-dimensional graphics : The name of one of the fields of computer graphics, dealing mainly with the visualization of three-dimensional objects.

  6. Image file formats • Graphic file formats can be divided into formats that store raster graphics and formats that store vector graphics. • Raster file formats can be divided into lossless, lossless, lossless and non-compressed formats.

  7. Raster graphics file formats Using lossy compression: ♦ JPEG ♦JPS ♦JPEG 2000 ♦DjVu ♦TIFF Using lossless compression: ♦TIFF ♦PNG ♦GIF ♦BMP No compression: ♦XCF ♦XPM ♦PSD Vector graphics file formats ♦SVG ♦CDR ♦SWF ♦EPS

  8. Image generation NON-INTERACTION GRAPHICS The software reads the data prepared by the user and then processes them into the image visible on the screen. INTERACTIVE GRAPHICS The program continuously updates the displayed image as a result of changes in parameters by the user. Simplified methods of drawing objects are usually used to minimize waiting time. REAL-TIME GRAPHICS The program must regenerate the image several hundred times in a short time, so as to leave the illusion that the changes are immediately visible. Commonly used in simulators (computer games).

  9. Space Colours This is the electromagnetic wave spectrum of the visible range. It has found its mathematical reflection in the form of color space. Unified regulations have been adopted in software, international industry. Two basic rules are described below. RGB (RedGreenBlue) model systematized on the basis of the receiving properties of one's own eye, vision of any colour can be approximated by appropriate mixing of only three of them colours, red green and blue CMYK (Cyan+Magenta+Yellow+blacK) model contains a set of four basic colours used in printing (ink, toners). In this method, the resulting colours are obtained by combining basic colours in proportions from 0% to 100%. CMYK paints are light-permeable substances, i.e. dyes, so they are combined not with the method of mixing but with layers and therefore the resulting colour can be from 0% to 400% of the colour (i.e. the component colours).

  10. Space Colours

  11. Space Colours That is why it was found that the basic colours in print were those resulting from mixing RGB - that is, Cyan, Magenta and Yellow.

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