1. Multiple choice questions: All answers are D.
1. Multiple choice questions: 1. D2 . C3 . B4 . C5 . a6 . B7 . b8 . d9 . c 10。 B 1 1.D。
2. Fill in the blanks: 1 Intuitive image, no language barriers. 2. The digital camera is input into the scanner input network or other digital resources. 3. The original multiple images are combined into multiple layers.
3. Short answer: (All the answers you want are contained in the following contents, so I won't answer them one by one. )
I. Development and Application of Multimedia Technology
1, the development of multimedia technology
The so-called media usually refers to the carrier carrying information, such as words, images, sounds, animations and so on. Multimedia usually refers to the combination of two or more media. In the field of computer technology and its application, multimedia technology usually refers to multimedia computer technology, that is, the technology of using computers to process multimedia information. Multimedia technology was born in 1980s. 1985, Commodore Personal Computer Company of the United States introduced Amiga, the first multimedia computer. (The first computer in the world is called ENIAC, electronic numerical integrator and computer) At present, the development of multimedia technology is developing rapidly in the direction of networking and intelligence.
2. The application of multimedia technology
The application of multimedia technology mainly includes the following technologies:
① Digital information technology
② High-speed computer processing technology
③ Efficient compression technology. For example, MPEG and JPEG are both made by compression technology.
④ Mass storage technology. VCD, DVD, etc. Is made of high-capacity storage technology.
⑤ High-speed network transmission technology
Common multimedia application systems include:
① Multimedia information consultation system
② Multimedia information management system
③ Multimedia-aided education system
④ Multimedia electronic publications
⑤ Multimedia video conference system
⑥ Multimedia remote diagnosis and treatment system
Second, the design and processing of digital images
1, the unique charm of the image lies in: rich information, intuitive image; Images can cross language barriers and promote people's wider exchange of ideas.
2. There are two types of images: dot matrix images and vector images.
3. Common image processing tools: drawing, going its own way, ACDsee, Flash, Photoshop, AutoCAD, CorelDraw.
Thirdly, the collection and processing of digital images.
1, there are generally three ways to obtain digital images:
① Shooting with a digital camera can directly convert external images into digital signals, which can be easily transmitted to the computer.
② Collect the existing printed pictures, and the scanner will convert them into digital signals that can be processed by the computer.
③ Obtain the required image data from the network or other digital resources.
2. Use Photoshop to process pictures
Image synthesis refers to combining multiple original images into a picture to highlight a certain theme. The concept of layer is often used in image processing. The purpose of using a layer is to independently process the currently selected image element without affecting other layers. Multiple layers can be stacked at will. Photoshop and flash support layers.
5.2 Processing of audio, video and animation information
First, the collection of digital audio.
In practical work (digital audio acquisition), people mostly use distributed recording.
Second, the simple processing of digital audio
The commonly used software for audio information processing is Cool Edit Pro.
Thirdly, the simple processing of video and animation information.
1, the so-called video is a dynamic scene composed of continuous pictures; Animation is the use of certain technical means, so that hand-drawn pictures are constantly presented, forming a dynamic scene.
2. Common video and animation processing tools: Windows Movie Maker, Super Jieba, Picture and Sound, Premiere, Flash, 3DMAX.
3. Video capture mode:
① Direct acquisition. Digital video files are obtained by shooting directly with a digital camera.
② Step-by-step acquisition. Firstly, the analog video signal is collected by the traditional analog camera, and then the digital video file is obtained by analog-to-digital conversion through the video acquisition card.
4. Preliminary computer animation.
An animation consists of static and continuous pictures, and each static picture is called a "frame". We make animation by setting the start frame and end frame of animation on the time axis, so that Flash can complete the transition of intermediate frames. These initial frames and end frames are called "key frames". After making Flash animation, you need to save the working document in FLA format for later modification. If you export it as an animated work, it will be in SWF format. If exporting as an image file, it is best to use GIF or JPG format.
Attachment: Comparison table of Chinese and English terms in this chapter.
Chinese English abbreviation English full name
Moving picture expert group
Jpeg joint photographic experts group
video compact disc (VCD)
Digital video disc DVD digital video disc