pixel

Thân thiện

A digital artist carefully adjusts a single pixel on a computer screen.

Definition

Noun: 1. The smallest controllable element of a digital image or display: A pixel is the fundamental, indivisible unit that makes up a digital image or what is shown on a screen. Each pixel typically represents a single color and, when combined with millions of others, forms the complete picture.

Usage

The word "pixel" is used to discuss the quality, density, and detail of digital images and displays. * It is a countable noun (e.g., one pixel, eight million pixels). * It is often used with measurements of density (e.g., pixels per inch - PPI) or total count (e.g., megapixels).

Examples

• Noun:
  • This old camera only takes photos that are 640 pixels wide.
  • A high-resolution screen has more pixels packed into the same area, making images look sharper.
  • When you zoom in very closely on a digital photo, you can see the individual colored pixels.

Advanced Usage

• "To pixelate" (verb): To cause an image to become visibly blocky or blurred, often intentionally for censorship, by enlarging the individual pixels.
  • The TV show pixelated the person's face to protect their identity.
• Concept of "Pixel-Perfect": A term used in design and development to describe an implementation that matches the original design mockup exactly, down to the last pixel.
  • The developer ensured the website layout was pixel-perfect.

Variants and Related Words

• Pixelation / Pixellation (noun): The effect or state where individual pixels are visible, often resulting in a blocky, low-resolution appearance.
  • The low-quality stream caused severe pixelation during fast-moving scenes.
• Megapixel (noun): A unit equal to one million pixels, commonly used to describe the resolution of digital cameras.
  • The smartphone has a 12-megapixel camera.
• Voxel (noun): A volumetric pixel; the 3D equivalent of a pixel, representing a value on a regular grid in three-dimensional space.

Synonyms

• Picture element: The full technical term from which "pixel" is derived (from "pix" [pictures] + "el" [element]).
• Pel: An older, less common abbreviation for "picture element."

Related Phrases

• Pixels per inch (PPI): A measurement of the pixel density (resolution) of a digital image or display device.
  • Printers and screens are often rated by their pixels per inch.
• Dead pixel: A pixel on a display screen that is permanently off (black) or stuck on a single color.
  • The manufacturer's warranty covers screens with dead pixels.
• Subpixel: A part of a pixel used in some color display technologies; each pixel is composed of red, green, and blue subpixels.

Học thuật

Noun

1. (computer science) the smallest discrete component of an image or picture on a CRT screen (usually a colored dot)
   • the greater the number of pixels per inch the greater the resolution

Từ đồng nghĩa

• pel
• picture element