What are the meanings of pixel, resolution, bitmap and vector diagram?

1. Vector diagram, also called vector diagram, describes and records a diagram with a series of computer instructions. A diagram can be decomposed into a series of subgraphs composed of points, lines, surfaces, etc., which records the geometric shape, line thickness and color of the object. The storage capacity of the generated vector diagram file is very small, which is especially suitable for text design, pattern design, layout design, logo design, computer aided design (CAD), arts and crafts design, illustrations and so on. Vector drawings can only represent figures composed of regular lines, such as engineering drawings, three-dimensional modeling or artistic words; For images (landscapes, people, mountains and rivers) composed of irregular pixels, it is difficult to express them in mathematical form, so it is not suitable to use vector diagram format; Secondly, vector diagram is not easy to make colorful images, the drawn images are not very real, and it is not convenient to exchange data between different softwares. In addition, vector images cannot be obtained by scanning, and they are mainly generated by design software. Vector drawing programs define (like mathematical calculation) angles, arcs, areas, and spatial directions relative to the paper, including wireframes that give filling and wheel characteristics. Common vector graphics processing softwares include CoreIDRAW, AutoCAD, Illustrator and FreeHand. 2. Bitmap Bitmap is also called bitmap or pixel map. The map on the computer screen is composed of luminous points (pixels) on the screen. Each point uses binary data to describe its information such as color and brightness. These points are discrete and similar to dot matrix. The TINT of multiple pixels forms an image, which is called a bitmap. When the bitmap is enlarged to a certain extent, it will be found that it is composed of small squares, which are called pixel points, and a pixel is the smallest image element in the image. When dealing with bitmap images, pixels are edited instead of objects or shapes, and its size and quality depend on the number of pixels in the image. The more pixels per square inch, the clearer the image and the smoother the blending of colors. Computer storage of bit images actually stores information such as the position and color data of each pixel of the image, so the clearer the image, the more pixels there are, and the greater the corresponding storage capacity. Compared with vector images, bitmap images are easier to imitate photo-like real effects. The main advantages of bitmap images are strong expressive force, delicacy, multi-level and many details, which can easily simulate the real effect like photos. Because the pixels in the image are edited, the clarity and smoothness of the image will be affected when it is stretched, enlarged or reduced. Bitmap images can be obtained by digital camera, scanning or PhotoCD, and can also be generated by other design software, also known as dot matrix images or drawn images, which are composed of single points called pixels. When you enlarge the bitmap, you can see the individual picture elements that make up the image. Expanding the bitmap size is to increase a single pixel, which will make the lines and shapes appear uneven. But if you look at it from a little farther away, the color and shape of the bitmap image are continuous, which is the characteristic of the bitmap. Vector images, also known as drawing images, are mathematically defined as a series of relationships between points. Vector images can be enlarged or reduced at will without image distortion. pixel and resolution images PPI bitmap images are composed of many points, which are called pixels. Resolution refers to the number of dots contained in a unit length. The unit of resolution is "pixels per inch", that is, ppi(pixels per inch), which means the number of pixels per inch. The higher the resolution of an image, the more pixels it contains per unit length, and the more details the image has. There is a close relationship between image resolution and image size. The higher the resolution of the image, the more pixels it contains, the greater the information content of the image and the larger the file.

remember to adopt it.