A digital image is made up of a finite number of elements called pixels, each of which has a particular location and value (intensity). Typically, pixels are organized in a two-dimensional ordered matrix (Matrix). The size of an image is determined by the dimensions of this array of pixels. The width and height of the image correspond to the number of columns and the number of rows in the array, respectively. Therefore, the pixel matrix is a matrix of M columns x N rows. To reference a specific pixel within the image matrix, we define its coordinates at the x and y positions. Say no to plagiarism. Get a tailor-made essay on "Why Violent Video Games Shouldn't Be Banned"? Get an original essay Each pixel has its own intensity or brightness value. If all the pixels have the same value, the image will have a uniform tone, that is, all black, white, gray, or some other tone. It is in the type of intensity used for each pixel that image types vary from one another. Black and white images only have the intensity of black and white. Grayscale images range in intensity from the darkest gray (black) to the lightest gray (white). Color images, on the other hand, have the intensity of the darkest and lightest of three different colors, red, green and blue. Various mixtures of these color intensities produce a color image. Intensity values in digital images are defined by bits. A bit is binary and has only two possible values, 0 or 1. An 8-bit intensity range has 256 possible values, from 0 to 255. The two most basic types of digital images are: Black and White Grayscale Red- Green-Blue. TIFF (also known as TIF), file types ending with.tifTIFF stands for Tagged Image File Format. TIFF images create very large files. TIFF images are uncompressed and therefore contain a lot of detailed image data. TIFFs are also extremely flexible in terms of color and content.JPEG (also known as JPG), file types ending in.jpgJPEG stands for Joint Photographic Experts Group, which created this standard for this type of image formatting. JPEG files are images that have been compressed to store a lot of information in a small file size. Most digital cameras store photos in JPEG format, because that way you can take more photos on a camera card than you could with other formats.GIF, file types ending in.gifGIF stands for Graphic Interchange Format. This format compresses images but, unlike JPEG, the compression is lossless (no detail is lost in the compression, but the file cannot be reduced to the size of a JPEG). PNG, file types ending with.pngPNG stands for Portable Network Graphics. It was created as an open format to replace GIF, because the patent for GIF was owned by one company and no one else wanted to pay the licensing fees. It also allows for a full color gamut and better compression. Raw image files Please note: this is just an example. Get a custom paper from our expert writers now. Get a Custom Essay Raw image files contain data from a digital camera (usually). The files are called raw because they have not been processed and therefore cannot yet be edited or printed. There are many different raw formats - each camera company often has its own proprietary format.
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