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What is a Pixel? Definition, Uses, Features and More

What is a Pixel? Definition, Uses, Features and More

Pixel Definition

The pixel is defined as the smallest of the homogeneous units in a color that make up a digital image. By enlarging one of these images through a zoom, it is possible to observe the pixels that allow the creation of the picture. At sight, they present as small squares or rectangles in white, black, or shades of gray.

    • The bitmaps include pixels that are coded by a group of bits of a given length.
  • The pixel encoding will determine the number of color variations that the image can display.
  • True color images are those that use three bytes to establish color and, in total, provide 16,777,216 color options.
  • The transformation of the numerical data that a pixel stores in color require knowledge of the depth and brightness, but also of the color model.
  • The most common model is RGB ( Red-Green-Blue ), which creates colors from the combination of red, green, and blue. Monitors and scanners for computers typically use the RGB model.

Notwithstanding the majority of the abovementioned, we cannot ignore the fact that the term we are analyzing is also part of a precise expression called dead pixel. With it, what is coming is to describe or define all that pixel that does not work as it should in what is. For example, an LCD type screen.

In the same way, it should be clear that there is also the stuck pixel which characterizes because it has a reliable type of color, either red or blue or green is. And all this without forgetting the hot pixel that is the white one that is always on.

It is essential to underline the fundamental or unique role that pixels are playing in the world of animation. So much, that the creation of a new type of art named Pixel Art. What comes to define this discipline is that it consists of editing images from a computer, and more specifically, by doing use of a series of particular computer programs.

Also, in this type of art, we find two fundamental elements or pillars: the isometric style, which is the one with which three-dimensional effects are achieved and, the non-isometric style is the one defined by being everyone who does not fit within from the previous category.

It should be noted that one megapixel is equivalent to one million pixels. It uses to indicate the resolution of a digital camera for images.

Pixel Uses


When we open our graphics editing program, when you start with a new project, you will ask us for the resolution or, as we have already seen, for the number of pixels.
The purpose of the resolution is to be able to classify the devices where we are going to show the image:

The resolution is no more than the total number of pixels that will form the bitmap image. The advanced the number of pixels, the better the image will be. The number of pixels associated with a given image depends on how many pixels the camera’s CCD sensor is using at the time of capturing.

The pixels of the height multiplies by its width to rapid the resolve of an image

Example: An image that has a determination of 1000 x 1000 pixels will result in 1,000,000 pixels. To make it easier to understand, It expresses in megapixels (MP), such that 1,000,000 pixels is equal to 1.0 MP.

It is one of the first concepts that the professional will learn in the world of graphic design. And will be crucial when it comes to achieving the best quality results.

Pixel Features

Pixels are color dots (grayscale being a monochromatic color range). Enlarging enough a digital image (zoom) on a computer screen, you can see the pixels that the picture. These form as a succession of pixels.

The sequence marks the coherence of the information presented, being a coherent matrix of information for digital use as a whole.

The area where these matrices project is usually rectangular. The portrayal of the homogeneous pixel regarding shading variety and thickness per inch.

This variety being invalid, and characterizing each point dependent on width, in connection to the zone.

A pixel encodes by a set of bits of a certain length in bitmap images and graphic devices. For example, a pixel with one byte (8 bits) encodes. So, that each pixel supports 256 variations (28 variations with repetition of 2 possible values in a bit taken from 8 in 8).

In true-color images, it uses three bytes to define a color; that is, in total, we can represent a total of 224 colors. Which adds 16,777,216 color options (32 bits are the same colors as 24 bits, but have eight more bits for transparency).

Also Read: The Real Value of Managed IT Services

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