Generally, we use plane drawing software to solve this problem. According to the graphic type of the picture, it is divided into vector diagram and point bitmap. In the field of printing, adobe's vector drawing tool illustrator is often used to make graphics on different sizes of paper and other media. According to the color picture, use the pen drawing tool to tick off each closed path, so that the color fills the space.
If you use adobe's photoshop or similar tools from other companies, you can check the area to form a pixel-filled point bitmap.
Extension:
1)Adobe illustrator is an industry standard vector illustration software for publishing, multimedia and online images. As an excellent image processing tool, Adobe Illustrator is widely used in printing and publishing, poster book typesetting, professional illustration, multimedia image processing and Internet page making. It can also provide high precision and control for line drawing, and is suitable for making any small design to large-scale complex projects.
2) Vector diagram, [1]? Also known as object-oriented image or drawing image, it is mathematically defined as a series of points connected by lines. Vector file [2]? Graphical elements in are called objects. Each object is an independent entity with properties such as color, shape, outline, size and screen position.
Vector diagram is based on geometric features, and vectors can be points or lines. Vector diagram can only be generated by software, and the file occupies less internal space, because this kind of image file contains independent separated images, which can be recombined freely and unrestricted. Its characteristic is that the enlarged image will not be distorted and has nothing to do with the resolution. Suitable for graphic design, text design, logo design, layout design, etc.