When the images are displayed on the screen, we refer to dots as pixels. In this instance, the image is described through dots situated on the rectangular grid. On the other end, there’s raster graphics. Additional pieces of information are, for instance, the thickness and the colour of the line, the filling colour or transparency level. Each graphic is described with parameters – the coordinates of the ends of the segment line, coordinates of the middle point and length of the radius of a circle and so on. Vector graphics use geometrical shapes to describe the image (or blocks if we’re speaking of 3D graphics), such as line segments, curves, circles and polygons. The difference between them is related to the description of the image. Vector graphics are one of the two basic types of computer graphics – along with raster graphics. What does this alert mean? How can you check whether you’re using vectors? And finally, is it really a must? In addition, you are able to freely change line/filling colors and extract/combine them to create your own illustrations for your presentation.As you design boxes in our box editor you can come across the message “if possible, please use vector files”. Vector images - generally refer to illustrations, drawings - with ability to enlarge without losing quality.Īll PPT diagrams we developed are vector graphics and can be scaled to any size without loss of resolution. Raster (Bitmap) images - generally refer to photographs, pictures - with great color detail, but can’t enlarge without becoming blurry. Popular Vector file format extensions include: EPS, AI, CDR, PPT/PPTX, WMF/EMF, SVG, et al. Generally Vector images are created through the process of drawing with vector illustration programs such as CorelDRAW, Adobe Illustrator, or PowerPoint. Because vector images scale up or down without the loss of image quality, they can be output at any resolution both on screen and in print. The math is simply recalculated to produce an object twice the size of the original. For example a 1″ square object would need to be multiplied by a factor of 2 in order to double in size. When an illustration (drawing) program sizes a vector image up or down, it simply multiplies the mathematical description of the object by a scaling factor. They can be scaled up or down without any loss of quality. Vector images are made of lines and curves (or paths). Popular Raster file format extensions include: JPG/JPEG, GIF, PNG, BMP, TIFF, et al. Majorities of images on the Internet are Raster images as well. Pictures taken from a camera are Raster images. Generally Raster images are created through the process of scanning source artwork or "painting" with a photo editing or paint program such as Corel PhotoPAINT or Adobe PhotoShop. Spreading the pixels over a larger area causes the image to begin to lose detail and clarity. Increasing the number of pixels or making the pixels bigger in an image results in the original data being spread over a larger area. When you attempt to increase the size of an image created in a raster based program, the pixels defining the image can be increased in either number or size. They are created using a grid of pixels to define the image. Each pixel is a tiny square with assigned color value. Every shape is composed of thousands of pixels which is why we cannot see individual squares while looking at a bitmap image. Raster (Bitmap) images are composed of pixels. There are two types of images in the digital world - Raster (also called Bitmap) and Vector. The second, let's explain the difference. The Raster (Bitmap) image becomes blurry when enlarged, however the Vector image keeps the same resolution regardless of enlarging the size. No - if images are Raster (Bitmap) graphicsįirst, take a look at the following example. Have you ever tried enlarging images and then images became blurry? Is there a way to enlarge images without losing quality?
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