![]() This definition describes the amount of pixels used per inch of printed image. The difference is that this definition is related to print size. However there is also another definition of resolution – DPI or Dots Per Inch. The resolution of an image is often defined by the amount op pixels horizontally and vertically like 640x480 A printout of a low resolution will become blurred as there is not enough information in the image. Although this is obvious it is often forgotten when images are printed or used as textures in Maya. So the higher the resolution and thereby the amount of pixels used the more accurately the image is defined. If there are more pixels in an image they are more accurately describing the content of the image. A higher resolution than the 640-480 image will mean that there are more pixels horizontally and vertically. For example a 640 by 480 pixel image will have 640 pixels horizontally and 480 pixels vertically. The resolution of an image is defined in the amount of pixels used to define the image. It consists of o rectangular row of pixels in a horizontal and vertical direction. ![]() If some tool does not work while it should, check the Mode of the image.Ī raster image is a grid of pixels, each containing one color, describing the image. The Mode of the image can have an effect on the available tools that can be used to edit the image within Photoshop. The additional black makes it possible to print real black instead of mixing it. The images using this combination of colors are called RGB images.ĬMYK Cyan Magenta Yellow Key – This standard is used for digital images that will be printed as printers use cyan, magenta, yellow and black (key) to mix colors while printing. Hence, the RGB mode is standard for digital photographs. RGB Red Green Blue – Screen displays are based on mixing red, green and blue light for generating colors. There are two main Modes used for defining colored images. The Mode defines the base colors which are used to generate all the colors in the color range by mixing them together. The color range is depending on the Mode of the image. Examples are importing a pdf file in Photoshop and also before printing vectors are rasterized.Įach pixel can contain one color. A method to counter this effect is called anti-aliasing. Especially sloped and curved lines tend to show a sawtooth pattern. One could see it as super imposing a grid on a vector object and then determining the color value. The process is which a vector file is converted to a bitmap is called rasterizing. JPEG only uses lossy-compression whereas TIFF rarely or never uses lossy-compression. ![]() Each file format has it's own way to compress. These methods can be divided in two categories: lossy and non-lossy. There are several methods available for saving files, all using different ways of compression in order to limit the file size. Most used extension for bitmap images are:Īpplications for creating and editing bitmap or raster images are: Photoshop primarily works with raster images and has limited support for vector graphics. Raster images can be edited with software such as Photoshop, GIMP, Paint and Paint Shop Pro. This makes it impossible to scale a raster image without loss of quality. The raster becomes apparent and the image will no longer have sufficient detail for smooth shapes. The main disadvantages becomes apparent when scaling or zooming-in to a part of the image. Because raster images are based on pixels they have certain disadvantages. Often pixel images are referred to as raster images because an image consists of a raster or grid of pixels. ![]() Generally speaking, they consist of pixels (squares) with a certain color value. Digital photos are raster images, for example. Pixel or raster images are the most commonly used type of images. ![]()
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