* Unsharp masking, an image processing method

Unsharp masking ( USM ) is an image manipulation technique, often available in digital image processing software.

# REDIRECT Unsharp masking

Unsharp masking has been applied to lower part of image, creating overshoot ( signal ) | overshoot and undershoot and increasing acutance.

LPC may also be thought of as a basic perceptual coding technique ; reconstruction of an audio signal using a linear predictor shapes the coder's quantization noise into the spectrum of the target signal, partially masking it.

Interrupt latency may be affected by microprocessor design, interrupt controllers, interrupt masking, and the operating system's ( OS ) interrupt handling methods.

Such mechanisms involve system calls, and usually invoke the OS's dispatcher code on exit, so they typically take hundreds of CPU instructions to execute, while masking interrupts may take as few as one instruction on some processors.

Stuttering is less prevalent in deaf and hard-of-hearing individuals, and stuttering may be improved when auditory feedback is altered, such as masking, delayed auditory feedback ( DAF ), or frequency altered feedback.

In instances where two reactants in a sample may react with the titrant and only one is the desired analyte, a separate masking solution may be added to the reaction chamber which masks the unwanted ion.

These differences suggest that one may be justified in referring to the American two-party system as masking something more like a hundred-party system.

While more constituent drives may be employed, many implementations deal with a maximum of only two ; of course, it might be possible to use such a limited level 1 RAID itself as a constituent of a level 1 RAID, effectively masking the limitation.

A person may observe the saccadic masking effect by standing in front of a mirror and looking from one eye to the next ( and vice versa ).

Using headphones at a sufficiently high volume level may cause temporary or permanent hearing impairment or deafness due to an effect called " masking.

Lower-priced RV toilets may require the masking scent.

When the ear is covered the subject will hear body noises, such as heart beat, and these may have a masking effect.

While unsharp masking increases the apparent sharpness of an image in ignorance of the manner in which the image was acquired, deconvolution increases the apparent sharpness of an image, but based on information describing some of the likely origins of the distortions in the light path used in capturing the image ; it may therefore sometimes be preferred, where the cost in preparation time and per-image computation time are offset by the increase in image clarity.

* For neat work, the worker may apply painter's masking tape beforehand, taping off the areas on each side of the joint to catch any surplus, and remove the tape again before the tooling time has expired.

This one-back memory may be the main substrate for both the integration processes in iconic memory and masking effects.

The problem may be as simple as masking the taste or odor of the core, or as complex as increasing the selectivity of an adsorption or extraction process.

It may be used by a vendor to place itself in such a way as to promote all their strongest abilities whilst simultaneously masking their weaknesses.

Estimates using complex global climate models suggest that this effect may be partially masking the effects of greenhouse gas increases on the global surface temperature.

You may set penalty levels for roughing the passer, roughing the kicker, personal foul, face masking, def pass int., off pass int., fair catch int., punt catch int., clipping, and intentional grounding, but they do not appear to be functional.

* Temporal masking – Certain words when being read aloud in a series may evoke a striking sound or response that makes inaudible the mental articulation of the following word.

Rosenthal also cites masked-priming, in which the individual is presented a priming stimulus which is quickly replaced by a masking stimulus.

Unlike Windows NT, OS / 2 also always gave DOS programs the possibility of masking real hardware interrupts, so any DOS program could deadlock the machine this way.

Due to saccadic masking, the eye / brain system not only hides the eye movements from the individual but also hides the evidence that anything has been hidden.

Reles's mother-in-law also testified that Reles and Strauss had asked her for an ice pick and clothesline earlier in the day and, while at the house, heard loud music masking a commotion in the living room.

* The MP2 sub-band filter bank also provides an inherent " transient concealment " feature, due to the specific temporal masking effect of its mother filter.

Saccadic masking, also known as visual saccadic suppression, is the phenomenon in visual perception where the brain selectively blocks visual processing during eye movements in such a way that neither the motion of the eye ( and subsequent motion blur of the image ) nor the gap in visual perception is noticeable to the viewer.

It has also been postulated that the " stopped clock illusion " ( a form of chronostasis ) is caused by neurological processing of saccadic masking.

There are the normal cyan, magenta and yellow dye forming couplers, but also there is a magenta coloured cyan masking coupler and a yellow coloured magenta masking coupler.

* Gesso, typically a substrate for painting, but can also be applied to achieve masking effects

Along with some other diuretics, furosemide is also included on the World Anti-Doping Agency's banned drug list due to its alleged use as a masking agent for other drugs.

Phantazia could also generate a masking effect, rendering herself and others near her undetectable to human senses and electronic surveillance.

Subsequently, the now stationary Texas was also forced to cease firing, as the USS Oregon, now moving at a surprising speed for a pre-dreadnought battleship, ran up aft of the Texas and properly, due to its greater firepower, passed to the inside towards the Spanish fleet, effectively masking the fire of Texas for a few minutes.

The colour image is re-assembled in the darkroom, where further techniques such as unsharp masking to enhance fine detail might also be applied.

Transportable relative gravimeters also exist ; they employ an extremely stable inertial platform to compensate for the masking effects of motion and vibration, a difficult engineering feat.

First is the advantage of recombinational DNA repair ( promoted during meiosis because homologous chromosomes pair at that time ), and second is the advantage of complementation ( also known as hybrid vigor, heterosis or masking of mutations ).

The LTS also had a masking avoidance curve display ( preventing firing the laser at the jet ) and eventually a north orientation curve and 40, 000 feet capable laser.

Besides computers and software, graphic artists are also expected to be creative with processing camera work, registration, crop marks, and masking.

Sound masking can also be created by adjusting HVAC noise to a predetermined level.

Solid Snakes also uses her handkerchief to avoid wolf attacks by masking his scent with hers.

If the source of sound is directly in front of the listener, then both ears receive equal intensity, but at frequencies above about 1 kHz the sound that enters the ear canal is partially reduced by the masking effect of the head, and also highly dependent on reflection off the pinna ( outer ear ).

Along with the posters and paperwork, a large amount of contraband items were also located in Knight's cell, such as blades, sharpened knives, articles associated with the Ku Klux Klan and the Nazi Party, magazines, book and articles on weapons and war, medication bottles, a leather belt, two television remote controls, an extension lead, a can opener, bale hooks, permanent markers, computer disks-many containing information relating to prison security and staff, pornographic material, sandpaper, masking tape, prison manuals, staff pictures, T. A. B.

The concentration of the photophores on the flanks of the fish also indicate the light's use as camouflage ; in a strategy termed counterillumination, the lanternfish regulate the brightness of the bluish light emitted by their photophores to match the ambient light level above, effectively masking the lanternfishes ' silhouette when viewed from below.