Image contrast definition

Image contrast means the amount of radiographic density difference between adjacent areas resulting from a fixed amount of attentuation difference or light exposure difference.
Sample 1Sample 2Sample 3
Image contrast means the amount of radiographic density difference between adjacent areas re- sulting from a fixed amount of attenuation difference or light exposure difference.
Sample 1Sample 2Sample 3

Examples of Image contrast in a sentence

  • Image contrast shall permit differentiation of subtle tissue density differences.

  • A ROI, approximately 25 × 25- pixels was extracted from an occlusal surface area of sound enamel and a region within the composite and averaged to calculate the mean intensity from the respective regions Is and Ic. Image contrast was calculated using the equation (Ic-Is)/Ic. The image contrast varies from 0 to 1 with 1 being very high contrast and 0 having no contrast.

  • The Neuroimaging Core will perform the following on the phantom data: Gradient Linearity Measurements, Signal to Noise measurements, Image contrast, Inhomogeneity, and RF Power measurements.

  • Image contrast within the correlation windows was expected to be as low as 0.5% for some of the proposed landing sites so even small dust particles could be a potential problem.Several different strategies were considered to mitigate the effect of dust artifacts on the DIMES algorithm.

  • Image contrast is further enhanced by a Gaussian high pass filter.

  • Image contrast is defined in different ways, but it is usually related to varia- tions in image luminance.

  • Image contrast to visualize bony anatomy was sufficient on all machines.

  • Measurements:The Mayo QC team will perform the following measurements on the phantom data: Gradient Linearity Measurements, Signal to Noise measurements, Image contrast, Inhomogeneity, and RF Power measurements.

  • The Mayo QC team will perform the following measurements on the phantom data: Gradient Linearity Measurements, Signal to Noise measurements, Image contrast, Inhomogeneity, and RF Power measurements.

  • Image contrast represents the difference in the tip-surface in- teraction (with the SFM), or the tip-surface current (with the STM) at different surface sites, and all non- equivalent surface sites should be probed.

Related to Image contrast

  • embedded generator means a generator who is not a market participant and whose generation facility is connected to a distribution system of a distributor, but does not include a generator who consumes more electricity than it generates;

  • Single tomogram system means a CT x-ray system which obtains x-ray transmission data during a scan to produce a single tomogram.

  • Grab sample means an individual sample collected in less than 15 minutes in conjunction with an instantaneous flow measurement.

  • Fluoroscopic imaging assembly means a subsystem in which X-ray photons produce a visual image. It includes the image receptor(s) such as the image intensifier and spot-film device, electrical interlocks, if any, and structural material providing linkage between the image receptor and diagnostic source assembly.

  • X-ray high-voltage generator means a device which transforms electrical energy from the potential supplied by the X-ray control to the tube operating potential. The device may also include means for transforming alternating current to direct current, filament transformers for the X-ray tube(s), high-voltage switches, electrical protective devices, and other appropriate elements.

  • Multiple tomogram system means a computed tomography X-ray system which obtains X-ray transmission data simultaneously during a single scan to produce more than one tomogram.

  • Process weight means the total weight of all materials introduced into any source operation. Solid fuels charged will be considered as part of the process weight, but liquid and gaseous fuels and combustion air will not.

  • Fuel system means the components which store or transport fuel on board the vehicle and comprise the fuel tank system, all fuel and vapour lines, any non-tank mounted fuel pumps and the activated carbon canister.

  • Yearly (1/Year) sampling frequency means the sampling shall be done in the month of September, unless specifically identified otherwise in the effluent limitations and monitoring requirements table.

  • Customer-generator means a user of a net metering system.

  • Compression Ignition Engine means an internal combustion engine with operating characteristics significantly similar to the theoretical diesel combustion cycle. The regulation of power by controlling fuel supply in lieu of a throttle is indicative of a compression ignition engine.