- 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.
The amount of detail perceptible by the human visual system.
It depends on many factors, including brightness, color, orientation, and contract. Optimum viewing distance depends upon visual acuity.
Industry:Software
A measure of the density with which oxide is packed into a coating. It is usually specified in terms of the weight of oxide per unit volume of the coating.
Industry:Software
a) Apparent image resolution. High sharpness may be the result of high resolution, or it might be an optical illusion caused by image enhancement or by visible edges in a display, such as the vertical stripes of an aperture grille CRT (e.g., Trinitron). Visible scanning lines can actually increase perceived sharpness. This may be one reason why, in some subjective ATV tests, some viewers have expressed a preference for NTSC pictures over ATV. b) Sharpness is the casual, subjective evaluation of detail clarity in an image. It is often assumed that sharpness and resolution are directly related, in that images possessed of greater sharpness are assumed to have greater resolution. An increase in subjective sharpness is usually reported when objects are more clearly delineated from each other and from background having hard, sharply-defined edges. A major contribution to subjective sharpness is this high contrast at edge transitions, as is emphasized by both edge enhancement and aperture correction, for example. In many practical systems, increasing the contrast at edge transitions is often accompanied by a reduction in fine detail, and under these conditions, sharpness and resolution may describe opposite characteristics.
Industry:Software
The form taken by the tape wound on to a reel. A good pack is one that has a uniform wind, has an acceptable E-value and is free from spoking, cinching, and layer-to-layer adhesion.
Industry:Software
The NYIT ATV scheme. VISTA is based on the inability of the human visual system to perceive high temporal and high spatial resolution simultaneously. It combines low frame rate, high line rate information with normal frame rate, normal line rate information to create a channel-compatible, receiver-compatible signal plus a 3 MHz augmentation channel. Aspect ratio accommodation has been suggested by blanking adjustment, squeeze, and shoot and protect techniques. In spite of the relatively small size of NYIT’s research center, VISTA was one of the first ATV schemes to actually be implemented in hardware.
Industry:Software
A tape’s giving off of oxide or other particles from its coating or backing, usually causing contamination of the tape transport and, by redeposit, on the tape itself.
Industry:Software
A unit that is not capable of recording and is used only for playing recorded tapes.
Industry:Software
