Product Packaging Appearance Image Information Digitization and Database Technology (2)

2.2 Product Packing Database Required Work

2.2.1 Development of Database Management System Software

The database management system (DBMS) is the foundation of the database application system. The basic goal of developing a database management system is to expand the capabilities of the database, improve its performance and availability, and thereby increase the productivity of user development database application systems. The development of database management system (DBMS) as the core product packaging appearance information management software system is one of the main research directions of the packaging material appearance information database in computer applications.

2.2.2 Development of Database Design Technology

The main purpose of database design is to design a good, easy-to-use, high-efficiency database and application system for a department or organization according to application requirements with the support of a database management system. During the design and development of packaging material appearance information database, the database design methods, design tools and theories, data models and data modeling methods, computer-aided database design methods and software systems, and database design specifications are mainly applied to the appearance information of packaging materials. Other research and development.

2.2.3 Research on Database Theory

The research of database theory mainly involves the design, optimization, query of the product packaging information database relation model, and the contents of relational data theory such as the security and integrity of the system. With the development of computer networks and artificial intelligence technologies, the development of distributed databases, parallel databases, data warehouses, deductive databases, and knowledge database systems will become new research and application fields for product packaging appearance information.

3 product packaging appearance image database model

3.1 Image Database Model Analysis

The product packaging appearance image database is designed to more effectively manage and utilize the product packaging appearance information data. In a complete product packaging appearance image database, the image retrieval, image interpretation and image information identification and processing must be supported. The data model embodies the requirements of data query. In the database design and establishment, the modeling of the image database is very important. In the modeling process of the image database, the description of the image data, the image features, and the auxiliary information processing are required:

1) Image data. The image information itself is a two-dimensional lattice information. Common image formats include BMP, GIF, TIFF, PCX, and the like. The image data also includes the image feature organization after processing the original image. The image feature organization is not directly stored but is encoded and then stored.

2) Description of image features. It mainly describes the shapes, colors, textures, and spatial relationships of image entities. This is indispensable for the query based on the image content.

3) Auxiliary information. A description of the entire image, as well as various relationship information with various related factors, etc.

It is not difficult to see from these types of data that the content of image data is difficult to describe accurately and is unstructured, and the spatial objects and their relationships do not contain semantic information themselves. If the semantic information is directly related to the spatial objects and their relationships, it will be serious. Limit the use of image information. Because the same object can have multiple interpretations and may be used in different ways at different times, its interpretation is similar. It develops with the development of image recognition technology. At the same time, the image database must also support image query and spatial reasoning. Because of the uncertainty of the interpretation itself, the system must provide specific domain knowledge so that users can gradually refine their requirements. This requires the model to be evolutionary.

3.2 Product Packaging Appearance Image Database Model Selection

In order to solve the difficulty of current product packaging image database model selection, a new data model can be used: the image data model IDM. The model inherits many advantages of the relation/object model, such as view definition, algebraic optimization, and solves problems that can not be solved by the relation/object model, such as unstructured image data. The main idea of ​​the model is to decompose the model of the object into a main table consisting of stable attributes and a sub-table of several variable attributes. When the query is inferred, the main table and sub-table are temporarily organized for further use, such as image information data. Access and so on, they form an integral whole, the external table is invisible, and supports object references based on object identifiers, thus forming a nested structure.

The purpose of establishing the product packaging appearance image database is to manage and utilize the product packaging appearance information data more effectively. Thus, in a complete product packaging appearance image database, image information retrieval, image interpretation and image information identification and processing must be Supported, and the data model should reflect the requirements of the data query. Therefore, the appearance of the product packaging image features and representation is the basis for the establishment of the product packaging appearance database prototype, on which to determine the corresponding search strategy, indexing strategy. IDM is an extremely flexible image data model, which can conveniently model the five models of image database structure such as image semantic features. The model can be evolved online, which greatly supports the spatial reasoning of the image system, can automatically adapt to the user's constant refinement of the specific domain of packaging materials, and flexibly support the modeling of unstructured image data.

4 Conclusion

The processing of product packaging appearance image information and the establishment of an image database model require the support of computer technology, image processing technology, and database technology, and the in-depth development of various technologies in the digitalization, storage processing, and query of product packaging appearance image characteristics. Will be more widely used in the field of product packaging appearance information research.

Source: Packaging Engineering, Issue 4, 2005

Ji Gang Xiao Zhaohui
(Chongqing Institute of Technology