|
|
|
|
|
|
|
|
|
Стандарт сжатия движущихся видеоизображений (сохранение только отличий между последовательными кадрами)
| Глоссарий по системам видеоохраны и видеонаблюдения |
|
Mpeg, английский
- A working group of experts formed by the iso/iec to develop the standards for audio and video compression and transmission. the group formed in 1988 and today has over 380 members. they are responsible for many popular standards including mp3 and mpeg-4.
- The motion picture experts group (mpeg) released mpeg-4 encoding in 1998. the basic idea behind mpeg is that compressed images are compared before being transmitted over the network. the first compressed image is used as a reference and compared to the images that follow it in the video sequence. the first image is transmitted over the network along with the parts of the following images that differ from the initial reference image. the viewing application on the receiving end of the transmission then reconstructs all images based on this information and displays the result. this is a simplified description of how mpeg-4 works.
- Motion picture experts group. an iso group of experts that has recommended
- Motion jpeg movie file. see movie clip the digital video compression standard agreed upon by the motion picture expert group, from the motion picture-computer industry.
- Motion picture experts group. an iso group of experts that has recommended manipulation of digital motion images. today there are a couple of recommendations, of which the most well known are -1 and -2. the latter one is widely accepted for high definition digital television, as well as multimedia presentation. -1standard for compressing progressive scanned images with audio. bit rate is from 1.5 mbps up to 3.5 mbps. -2the standard for compression of progressive scanned and interlaced video signals with high quality audio over a large range of compression rates with a range of bit rates from 1.5 to 100 mbps. accepted as a hdtv and dvd standard of video/audio encoding. 25 / 43 n
- Motion jpeg movie file. see “movie clip”the digital video compression standard agreed upon by the motion picture expert group from the motion picture computer industry.
- Moving pictures expert group
|
|
Компрессия, при которой каждый кадр видеопоследовательности запоминается целиком с jpeg-компрессией, русский
Минимальное расстояние до объекта, при котором воспроизводимое объективом изображение оказывается сфокусированным, русский
|
|
|
|
|
|
|
