Course: "New Technology of Password and Security"
Class: 201792
Name: Li Pengju
Student ID: 20179203
Class Teacher: Xie Sijiang
Class Date: March 29, 2018
Compulsory/Elective: Elective
cross media security
1. Course study
1.1 Traditional Multimedia and Transmedia
Traditional multimedia: Traditional multimedia has been deeply embedded in our lives now, and we also clearly know what is traditional multimedia. The English word for multimedia is Multimedia, which consists of two parts: media and multi. Generally understood as a variety of media. Comprehensive. Media is the intermediary that realizes information exchange between people. Simply put, it is the carrier of information, also known as the medium. Multimedia means the meaning of multiple media, which can be understood as the words that directly act on the human senses, The general term for various media such as graphics, animation, sound and video, that is, the manifestation and transmission methods of various information carriers. Traditional media are newspapers, magazines, etc. The mixed coexistence of media objects is manifested in that various media objects form complex associations and organizational structures, and media objects with different modalities are highly interactive and integrated across media or platforms. Through "cross-media", the same semantic information can be expressed from each side, and specific content information can be more comprehensively reflected than a single media object and its specific mode. The same content information crosses and integrates across various media objects. Only by integrating and analyzing these multimodal media, can the content information contained in this cross-media complex be understood as comprehensively and correctly as possible.
Transmedia: When the teacher mentioned transmedia in class, I was still very curious, because it is a brand new concept that has not been touched before, but in fact, transmedia technology is not uncommon now, but we do not know what we are using. Applications are cross-media technologies. So what kind of application is cross-media? Let’s take a few simple examples to illustrate. There are currently about 650 billion photos in QQ album, with a total data capacity of more than 100PB, more than 200 million photos are uploaded every day, and 40 billion photos are downloaded every day. Abroad: In one minute, Instagram shares 216,000 images, and Flickr photos are viewed 20 million times. It can be seen that cross-media big data is rapidly forming. In addition, due to the rapid development of video software and social networking sites, the growth rate of cross-media data can be described as staggering. These are all cross-media applications. Different from traditional single media, one application needs to undertake the functions of multiple traditional media, which is cross-media. It is also evident from the data above that there is a close connection between cross-media and big data.
1.2 Cross-media and big data
1.2.1 Application of cross-media big data
- traffic monitoring
- Building monitoring
- 24-hour surveillance video cloud backup service
- 3D graphics
- 3D photo studio
- E-commerce online fitting
1.2.2 Cross-media big data analysis and computing
The social attribute information related to various types of media such as text, audio, video, video, 3D location, etc. are mixed together to form a cross-media form.
It can be clearly seen that many of the data in cross-media are private data that need to be properly stored, so the security of cross-media is particularly important.
1.3 Transmedia and Security
1.3.1 Security-Oriented Cross-Media Content Analysis
- Cross-media security monitoring
- Identification of Harmful Content
- Cross-media forensic analysis
- Cross-media content identification
1.3.2 Information security technology based on cross-media
- Cross-media information hiding
- Cross-media verification technology
1.3.3 Cross-media information security technology
- Cross-media copyright protection
- Secure storage across media
- Secure transmission across media
- Cross-media safe handling
- Visual Password
Two, interesting knowledge points
2.1 3D printing
3D printing has brought about a global manufacturing revolution. In the past, the design of parts was completely dependent on the realization of the production process, but the emergence of 3D printers will subvert this production idea, which makes companies no longer consider production when producing parts. Process issues, any complex shape design can be realized by 3D printer. 3D printing can generate objects of any shape directly from computer graphics data without machining or molds, which greatly shortens the production cycle of products and increases productivity. Although it still needs to be perfected, the market potential of 3D printing technology is huge, and it is bound to become one of the many breakthrough technologies in the future manufacturing industry. 3D printing has made these types of printers available at some electronics stores, and factories are also selling them directly. Scientists say that the use of 3D printers is still limited, but one day people will be able to 3D printers to print more practical objects. 3D printing technology is critical to NASA's space exploration missions, and more than 30% of the existing spare parts of the International Space Station can be manufactured by this 3D printer. The facility will use polymers and other materials to build objects layer by layer using extrusion additive manufacturing. The 3D printing experiment is one of NASA's key research projects in the future. 3D printing parts and tools will enhance the reliability and safety of space missions, while reducing the cost of space missions because they don't have to be transported from Earth.
One practical application of 3D modeling is online fitting. With the growing number of online shopping groups, of course, it is inevitable to buy clothes, and most of us have had this experience. The clothes we bought do not fit very well, and we have to go through a series of troubles such as returning and exchanging goods. 3D modeling can solve this problem very well.
3D city scanning big data is growing rapidly.
