Defining Key Terminologies
- Pixel (Picture Element): A pixel is the smallest part of a computer picture. It shows one spot in the whole photo. Every little square has information about color, brightness and position. When these squares are put together with others they make a complete picture that we can see. Pixels are the parts that make up digital screens. They arrange together to show letters, pictures and videos.
- Resolution: Resolution means the number of little squares, called pixels, in a digital photo. It’s usually measured by width and height size. Using more details gives better results in pictures. Usual measurements for resolution are pixels per inch (PPI) for pictures that get printed and pixels per centimeter (PPCM). For example, a screen that can show pictures at 1920 x 1080 has more tiny dots or pixels from left to right and has 1920 pixels horizontally and 1080 pixels vertically.
- Pixel Density: Display resolution is the number of tiny dots on a screen, often shown as pixels per inch (PPI) for screens. It decides how clear a picture looks, and more pixels make it sharper. Mobile phones with good picture quality often have lots of tiny dots on the screen, making images colorful and clear.
- Color Depth: Bit depth, also called color depth, means how many bits show the color of each pixel. Usual values are 8-bit, 16-bit and 24-bit color levels. The more bits a pixel has, the more colors it can show. This makes for a wider and deeper range of colors.
- Raster and Vector Graphics: Raster graphics, a type of image creation, pixels are very important. These pictures are made using lots of tiny squares called pixels. In contrast, vector drawings use math equations to make shapes. This lets them get bigger without losing picture quality. Vector graphics can’t use pixels, so they are good for jobs like making logos and drawing pictures.
- Aspect Ratio: Aspect ratio means the balance between an image’s width and height. Common aspect ratios include 4:3, 16:9, and 1:1. Different devices and mediums can have special size rules, affecting how pictures are shown or taken.
What is a Pixel?
A pixel is the smallest unit of a digital image or display and stands for “picture element.” It is a very small, isolated dot that stands for one color and plays the most basic part in digital images. Pixels when combined help to create the mosaic of colors and shapes contributing towards visual content being displayed on screens such as smartphones, computers TVs, etc., or any other digital devices that we interact with every day. Each pixel has certain distinctive features; for instance, its location within the image which is defined by coordinates (usually measured in terms of rows and columns) as well as color details, brightness degree, etc., and sometimes — transparency value.
In digital imaging, a grid of pixels can be seen and the combination of thousands or millions of such ‘pixels’ creates an overall visual representation that users see on their screens. The term pixels, which means picture units, came about when digital imaging technologies were developed in the mid-20th century. Pixels help to implement visual information into a digital standard with which computers and other equivalent electronic devices can process, store, and show images. An image resolution is based on the number of pixels it incorporates, and higher resolutions generally lead to more detailed images.