The principle of a pixel, what is the definition of a pixel?

A pixel is a small square of an image that has a clear position and assigned a color value, and the color and position of the small squares determine what the image will look like.

You can think of a pixel as an indivisible unit or element in an overall image. Indivisible means that it can no longer be cut into.

A smaller unit or element, which exists in a single color cell. Each dot matrix image contains a certain amount of image.

These pixels determine the size of the image on the screen.

To put it simply, I accept what the cores usually call pixels, which is the number of photoelectric sensing elements on CCD CMOS, after a photosensitive element goes through photosensitivity, photoelectric signal conversion, AD conversion and other steps, it forms a point hole in the output **, if we magnify the image several times, we will find that these continuous tones are actually composed of many small square points with similar colors, and these small square points are the smallest unit of the image "pixel" (pixel),.

Pixels are divided into CCD pixels and effective pixels, and most of the digital rubber cameras on the market today are marked with CCD pixels rather than effective pixels.

Pixel: The full name of image element in Chinese.

By definition, a pixel refers to the basic coding of the primary pigment and its grayscale. Pixels are the basic units that make up a digital image, and the resolution of an image is usually expressed in pixels per inch (ppi) per inch.

For example, a 300x300ppi resolution means that there are 300 pixels per inch of length horizontally and vertically, or 90,000 pixels (300x300) in one square inch.

Like photographic photographs, digital images have a continuous palette of shades, and if you zoom in several times, you will find that these continuous tones are actually composed of many small square dots of similar color, which are the smallest units of the image, the pixels. This smallest graphic unit is displayed on the screen, usually as a single dot of color. The higher the pixel, the richer the color palette and the more realistic the color will be.

The image quality depends mainly on the lens of the camera, the size and quality of the sensor. The larger the pixels, the larger the resolution and the larger the printable size, however. Early cameras were all under 1 million pixels.

Since the second half of 1999, 2 million pixel products have gradually become the mainstream of the market, and now mobile phones are generally more than 5 million pixels.

Basic primary pigments and basic codes for grayscale.

Category: Electronic Digital.

Problem description: 1 pixel = how many other units or something, for example, one light year = the time it takes for light to travel in a year, what about 1 pixel? What exactly is a pixel?

Please! Thank you! ~

Analysis: Pixel: refers to the smallest unit of composition in a dot matrix image, and pixels can no longer be divided into smaller units.

In general, it is a square with information such as color, light and shade, coordinates relative to the whole image, and a certain number of different colors are arranged and combined in small squares to represent a bitmap image, that is, a bitmap image. An image taken with a digital camera, scanned by a scanner, or output by bitmap software is a bitmap.

It would be better understood to link the resolution.

Resolution: Pixels can no longer be divided into smaller dots, but pixels can actually be large and small. The number of small squares per unit area is the resolution of an image.

The more pixels per unit area, the smaller the individual pixels, and the higher the image quality. Conversely, the fewer pixels per unit area the content, the larger the individual pixels, and the lower the image quality. For the convenience of representation, image resolution is not represented by area, but by the number of pixels contained in the unit length on one side of the rectangle, the length unit is generally inches, and the resolution of the printed image we often say is 300, that is, the image contains 300 pixels in one inch (in centimeters), and there are 90,000 pixels in one square inch. Such an image for a screen display with a resolution of 72 would be approximately 16 times the print size at 100% display ratio.

A visible pixel is a relative unit.

1. The pixel is the smallest unit that can be displayed on the computer screen, and it is used to represent the unit of the image.

2. The most intuitive function of pixels is the output size, whether it is seen on the monitor or printed;

3. The higher the pixel, the more significant the display effect will be, and the imaging will be clearer.