|
|
|
|
|
|
|
|
|
Algorithms
|
Complex mathematical formulae or rules used to solve complex problems in cctv they are used to achieve digital compression of a video picture.
|
|
Mathematical, английский
- Analyzer, numerical integrator and computer эвм «маньяк»
- Математический
Compression, английский
- A state or condition of being pushed or shortened by a force.
- Сжатие
- Сжатие (данных), уменьшение размеров файла изображения. см. также lossy и non-lossy. процесс упаковки данных с целью уменьшения занимаемого ими пространства на накопителе
- Компрессия, сжатие
- The reduction of volume of a vapor or gas by mechanical means.
- Digital video pictures can be compressed with a number of techniques. these include: jpeg and jpeg-2000 (for still images), m-jpeg and mpeg (for moving pictures).
- The reduction in gain at one level of a picture signal with respect to the gain at another level of the same signal.
- A digital photograph creates an image file that is huge, a low-resolution 640x480 image has 307,200 pixels. if each pixel uses 24 bits (3 bytes) for true color, a single image takes up about a megabyte of storage space. to make image files smaller almost every digital camera uses some form of compression. see the jpg entry below.
- The application of any of several techniques that reduce the amount of information required to represent that information in data transmission. this method reduces the required bandwidth and/or memory.
- A method of reducing the size of a digital image file to free up the storage capacity of memory cards and hard drives. compression technologies are distinguished from one another by whether or not they remove detail and color from the image. lossless technologies compress image data without removing detail, while "lossy" technologies compress images by removing some detail. joint photographic experts group (jpeg) is a lossy compression format supported by jpeg, pdf and postscript language file formats. most video formats are also lossy formats. tiff files are not and, as such, are far more stable than jpegs and other lossy file formats.
- Reducing the number of bits needed to encode a digital signal, typically by eliminating long strings of identical bits or bits that do not change in successive sampling intervals (e.g., video frames).
- A digital photograph creates an image file that is enormous. to enable image files to become smaller and more manageable cameras employ some form of compression such as jpeg. raw and tiff files have no compression and take up more space.
- 1. the act of squeezing or pressing the first-aider applied compression to the chest of the casualty. 2. a serious condition in which the brain is compressed by blood or cerebrospinal fluid accumulating in it or by a fractured skull
- Смыкание (губок захватного устройства) cm. соmрutеr-соntrоllеd rоbоt 33. соntinuоus-раth mоtiоn движение робота по полностью программируемой траектории (при котором полная траектория, описываемая рукой манипулятора, программируется на программоноситель во время обучения так, чтобы каждая точка вдоль траектории движения регистрировалась для дальнейшего воспроизведения)
- Сжатие (данных); уплотнение; свертка; компрессия; упаковка
- Жёсткость (стержня) при сжатии; ~ in tension жёсткость (стержня) при растяжении; ~ in
- Продольно-поперечный изгиб, поперечный изгиб со сжатием; ~ and axial tension изгиб с осевым растяжением; ~ in two planes косой изгиб ~ of rebars [of reinforcing bars] гибка арматурных стержней beam ~ изгиб балки
- Сжатие о ~ along the grain сжатие вдоль волокон; ~ beyond
- Сжатое волокно; ~ in
- The intentional reduction in dynamic range to increase sustain and/or add punchiness, caused by a the use of a compressor/limiter.
- A process for removing redundant data from a digital media file or stream to reduce its size or the bandwidth used.
- A reduction of the time available for a scheduled storyboard to reach its final state.
- A way of making files smaller, either to fit into restricted storage space or to speed up transmission over the internet. popular compression standards include- jpeg- and- gif- for pictures,- mp3for music files,- mpeg, mp4, avi- and- mov- for movie footage, and- zip- for just about everything else.
|
Aliasing, английский
- Also known as moir? patterning. this is an effect that occurs when an analogue signal is sampled digitally at a sampling frequency less than twice the signal frequency. the effect can be minimised by a technique known as optical low-pass filtering.
- Алиасинг. эффект, воспринимающийся как высокочастотный шум из-за недостаточной частоты дискретизации при аналогово-цифровом преобразовании. уменьшить этот эффект можно с помощью фильтрации сигнала.
- Interference phenomenon which occurs when a sampled signal contains frequencies that are higher than half the sampling frequency. a ccd samples the picture spatially. an optical low-pass filter is used to avoid aliasing, especially in color applications.
- An effect caused by sampling an image (or signal) at too low a rate. it makes rapid change (high texture) areas of an image appear as a slow change in the sample image. once aliasing occurs, there is no way to accurately reproduce the original image from the sampled image.
- The process by which smooth curves and lines that run diagonally across the screen of a low-resolution digital file take on a jagged look as opposed to a smooth, natural rendition. aliasing is an artifact that results from a sample resolution that is not more than twice the frequency of what is being captured, or the nyquist rate. a common form of aliasing is moire. smoothing and anti-aliasing techniques can reduce the effects of aliasing.
- This is an effect caused by sampling an image at to low a rate. it causes rapid change (high texture) areas of an image to appear as a slow change in the sample image. once this has happened, it is extremely difficult to reproduce the original image from the sample.
Alc (automatic light control), английский
A feature of an auto iris lens used to adjust the between peak and average voltage which will emphasise detail in bright areas (peak), or shadows (average).
|
|
|
|
|
|
|
