Digital Technology And Digital Images: Characteristics Of Digital Image

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In modern era, digital imaging is widely used in every application around us in form of satellite communications, Internet, High Definition Television (HDTV), fax transmission, and digital storage of movies and many more, because it provide superior resolution and quality. From many years, medical imaging has opened the way for advanced medical imaging and telemedicine by taking advantage of digital technology. In electronic form of medical recording, images such as MRIs (Magnetic Resonance Imaging), X-rays, CT’s (Computed Tomography) etc. are digitized & stored as a matrix of binary digits in computer memory and along with this medical imaging require communicating and manipulating such large amounts of digital data in a regular manner. So there is an immense need of reducing the electronic storage required for archiving and/or transmitting digital medical images. One way of achieving this goal is through compressing the data/image before storage and …show more content…

Digital Image Characteristics
The characteristics of digital image are defined by following multiple parameters:
1. The first characteristics of a digital image are its mode of color. A digital image may have any one of the three modes: grayscale, binary and color. A grayscale image is an image in which each pixel contains a single color i.e. shades of gray color. A binary image is an image in which each pixel contains two possible values i.e. either black or white. A color image is an image in which each pixel uses different color.
2. A next characteristic of digital image is the color model used for color images. There are different types of color models which are used in digital imaging and each color model specifies the spectrum of possible colors for the pixel. The range of color which is visible on an image depends on the use of color model. Because of this a particular portion of visible spectrum is used for a digital image in particular color model, and this portion is characteristics of the

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