- Отрасли:
- Number of terms: 20560
- Number of blossaries: 0
- Company Profile:
Tektronix provides test and measurement instruments, solutions and services for the computer, semiconductor, military/aerospace, consumer electronics and education industries worldwide.
A) Occurs in a multistage routing system when a destination requests a source and finds that source unavailable. In a tie line system, this means that a destination requests a tie line and receives a tie line busy message, indicating that all tie lines are in use. b) Distortion of the received image characterised by the appearance of an underlying block encoding structure.
Industry:Entertainment
Subtractive colorimetry achieves metameric matching by removing portions of the spectrum from white light. The subtractive counterparts to the additive colour primaries are those which when removed from white leave the red, green, and blue accordingly cyan, magenta, and yellow. Combinations of these subtractive colours in various add mixtures provide metameric matches to many colors. Subtractive colour principles are employed in all hard-copy colour images and in light-valve systems such as colour transparencies, LCD panel display, motion-picture films, etc.
Industry:Entertainment
This effect is sometimes called whiter-than-white. Blooming occurs when the white voltage level is exceeded and screen objects become fuzzy and large.
Industry:Entertainment
A) Characteristics of colour reproduction including the range of colours that a television system can reproduce. Some ATV schemes call for substantially different colorimetry (with a greater range) than NTSC’s.
b) The techniques for the measurement of colour and for the interpretation of the results of such computations. Note: The measurement of colour is made possible by the properties of the eye, and is based upon a set of conventions.
Industry:Entertainment
A tendency for blue phosphors to age more rapidly than red or green. See also Phosphor Aging.
Industry:Entertainment
Special effect (also called paint) which colours a monochrome or colour image with artificial colors. This feature is found on both the Digital Video Mixer and Video Equalizer.
Industry:Entertainment
A state of reduced resolution. Blur can be a picture defect, as when a photograph is indistinct because it was shot out of focus or the camera was moved during exposure. Blur can also be a picture improvement, as when an unnaturally jagged-edged diagonal line or jerky motion is blurred to smoothness.
Industry:Entertainment
A) The tristimulus values of monochromatic stimuli of equal radiant power. The three values of a set of color-matching functions at a given wavelength are called color-coefficients. The colormatching functions may be used to calculate the tristimulus values of a colour stimulus from the colour stimulus function. b) The tristimulus value per unit wavelength interval and unit spectral radiant flux. c) A set of three simultaneous equations used to transform a colour specification from one set of matching stimuli to another. Note: Color-matching functions adopted by the CIE are tabulated as functions of wavelength throughout the spectrum and are given in Section 13.5 of ANSI/IES RP16-1986.
Industry:Entertainment
In a single frame (spatial example), reducing the number of pixels per horizontal line, causes a blurring or smearing effect.
In multiple frames (temporal example), the causes become more complicated.
They may include reduction of bandwidth, degree of image movement, algorithm type, and motion prediction/compensation techniques.
Industry:Entertainment
A philtre that can be used to separate luminance from chrominance in the NTSC or PAL composite video systems. The figure below shows a signal amplitude over frequency representation of the luminance and chrominance information that makes up the composite video signal. The peaks in grey are the chroma information at the colour carrier frequency. Note how the chroma information falls between the luminance information that is in white. The comb philtre is able to pass just energy found in the chroma frequency areas and not the luminance energy. This selective bandpass profile looks like the teeth of a comb and thus the name comb filter. The comb philtre has superior filtering capability when compared to the chroma trap because the chroma trap acts more like a notch filter.
Industry:Entertainment
