Design and development of bitmap display system based on Web -- 2

Main research ideas and methods: (basic ideas, work priorities, technical routes, etc.) requirement: The drawing of a bitmap requires at least two files: bitmap data file and color mapping file; The bitmap data file is the two-dimensional matrix data (in text format or binary format) given by floating point numbers or unsigned integers between [0,1], and the color mapping file is the color mapping of the corresponding matrix data given by the text format; 1. When the bitmap is displayed, a graphic file can be superimposed. The file specifies the position and color of each point in text format (not limited by the color mapping file), that is, a transparent layer of painting can be displayed on top of the bitmap; 2. The bitmap and the superimposed graphics file on it can be scaled in an integral multiple; 3. A new sub-window can be generated to display the enlarged area. At this time, the enlarged area needs to be marked in the original window. You can set the enlarged area by selecting or specifying the location with the mouse; 4. Be able to switch color mapping files; 5. Users are divided into ordinary users and registered users. Ordinary users can use the system without logging in; 6. Bitmap files uploaded by ordinary users cannot be saved, only the color mapping files preset by the system can be used; 7. Registered users can manage their uploaded bitmap files and upload color mapping files themselves; 8. The administrator can manage the colors set by the system Work focus: 1. Realize the login and registration function, so that ordinary users, registered users and administrators have different permissions. 2. Implement bitmap data file and color mapping file input system. 3. After data input, the bitmap is displayed successfully. 4. Realize the function of displaying transparent layer on bitmap. 5. Realize the overall zoom of the bitmap display page and the local zoom function of the specified part. 6. Realize the function of switching and uploading color mapping files. Technical route: 1. Select IntelliJ IDEA as the development tool. IntelliJ IDEA can automatically compile, check errors, and greatly improve development efficiency. 2. Implement development using java language. Personally, I am most familiar with the Java language. The Java Springboot framework greatly simplifies the configuration, eliminates the integration of [login to view URL] and dependency injection configuration, follows the idea that the specification is greater than the configuration everywhere, and focuses on the implementation of the business, rather than the low-level implementation. 3. Select MySQL for the database. MySQL runs fast. Easy to use and strong security.