Pixel - definition
Pixel - definition
A Pixel is the smallest element of a raster image that represents a single sample of visual information in a two-dimensional grid. In the context of computer graphics, Displays and image processing, a pixel is the basic unit of representation of colour and brightness in a specific portion of image space. Each pixel has spatial coordinates and numerical values that define its colour, usually stored as RGB (red, green, blue) components or in other colour spaces such as CMYK, YUV or HSV.
In electronic displays such as monitors, televisions, LCD or OLED displays, pixels are the physical elements of the matrix that emit or modulate light. In the case of digital images stored in graphics files, pixels are logical representations, i.e. sets of data stored in computer memory. The resolution of an image is defined as the product of the number of pixels horizontally and vertically, and the greater the number of pixels, the greater the potential for reproduction of detail.
In cameras and light-sensitive matrices (e.g. CCD, CMOS ), pixels are sensors that record the intensity of light falling on their surface. The information obtained by these detectors is then processed and converted into a digital signal, which reproduces the real image. In imaging technology, parameters such as spatial resolution, bit depth, pixel size and photosensitivity are crucial to the quality of the image obtained.
Pixels do not have a physically defined size without the context of the display medium. Their size depends on their packing density (DPI - dots per inch or PPI - pixels per inch), which affects image sharpness and scalability. In digital systems, a pixel can also contain transparency data (alpha channel), depth information, mask or metadata, which extends its functionality beyond a simple colour representation.
Transfer Multisort Elektronik (TME) is one of the world’s largest global distributors of electronic components, electrotechnical parts, workshop equipment, and industrial automation. The catalog includes over 1,500,000 products from 1,300 leading manufacturers. TME’s modern logistics centers in Łódź and Rzgów (Poland), with a combined area of over 40,000 m², ship nearly 6,000 packages daily to customers in more than 150 countries.
TME also invests in the development of knowledge and skills of young engineers and electronics enthusiasts through the TME Education project, and supports the tech community by organizing the TechMasterEvent series, promoting innovation and experience exchange.
