1, Baidu, there are many.
2. Find some pixels larger than this picture, and then customize the pixels through software, such as the light and shadow magician.
Pixels are made up of small squares of an image, which have definite positions and assigned color values. The color and position of the small squares determine the appearance of the image.
Pixels can be regarded as indivisible units or elements in the whole image. Indivisible means that it cannot be divided into smaller units or elements. It exists in a single color cell. Each dot matrix image contains a certain number of pixels, which determine the size of the image on the screen.
Several other concepts, such as voxel, texture element and surface element, are all derived from the concept of pixel and used in other computer graphics and image processing applications.
Dots are sometimes used to represent pixels, especially for computer marketers, and most of the time they are represented by DPI (dots per inch).
We can say that pixels in a visible image (such as a printed page) are pixels represented by electronic signals, pixels represented by numbers, pixels on a display, or pixels in a digital camera (photosensitive element). Many other examples can be added to this list, and there will be some more accurate synonyms according to the context, such as pixel, sampling point, byte, bit, point, point, superset, triple, edge set, window and so on.
We can also discuss pixels in the abstract, especially when we use pixels as a measure of resolution (also called resolution, the same below), such as 2400 pixels per inch or 640 pixels per line. Although there is a more specific definition of resolution, the number of pixels in an image is sometimes called image resolution. The more pixels used to represent an image, the closer the result is to the original image.
Pixels can be represented by a number, such as a "0.3 megapixel" digital camera with a rating of 300,000 pixels; It can also be represented by a pair of numbers, such as "640x480 display", which means 640 pixels horizontally and 480 pixels vertically (just like VGA display), so its total number is 640x480 = 307,200 pixels.
The color sampling points of digital images (such as JPG files commonly used in web pages) are also called pixels. Due to the different types of computer monitors, these may not correspond to some areas of screen pixels one by one. In this obviously different area, the points in the image file are closer to the texture elements.
In computer programming, an image composed of pixels is called a bitmap or raster image. The word raster comes from analog TV technology, and bitmap images can be used to encode digital images and some types of computer-generated art. Simply put, a pixel is the value of a point in an image. Points are drawn into lines, and lines are drawn into surfaces. Of course, the clarity of a picture is not only determined by pixels.