artifact

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artefact

, artifact
Cytology a structure seen in tissue after death, fixation, staining, etc., that is not normally present in the living tissue

Artifact

Individual product of human manufacture, such as cutlery, glassware, pottery, textiles, tools, and weapons.

artefact

or

artifact

any individual material object produced by a culture. The study of such objects is important in anthropology (see MATERIAL CULTURE). In ARCHAEOLOGY, the artefacts left behind by a society are the main means of reconstructing an account of that society.

artifact

[′ärd·ə‚fakt]
(archeology)
Any crafted object of common use that reflects the skills of humans in past cultures.
(communications)
Any component of a signal that is extraneous to the variable represented by the signal.
(histology)
A structure in a fixed cell or tissue formed by manipulation or by the reagent.
(medicine)
Noise or spurious signals that occur during various radiological imaging techniques; can reach a level where they appear in the image with as much strength as the signals produced by real objects.

building artifact

An element in a building which demonstrates human workmanship, such as a stained-glass window.

artifact

(1) Any element in a software development project. It includes documentation, test plans, images, data files and executable modules.

(2) A distortion in an image or sound caused by a limitation or malfunction in the hardware or software. Artifacts may or may not be easily detectable. Under intense inspection, one might find artifacts all the time, but a few pixels out of balance or a few milliseconds of abnormal sound often go undetected.

Analog Artifacts
In film, artifacts such as blotches, scratches and flicker are commonly found, especially in older movies. Imperfections in the camera lenses and silver-grain film itself can generate "noise," which appears as tiny background specks, making the image softer. The electronic recording of analog videotapes can introduce noise as well. See noise.

Digital Artifacts
Artifacts are a natural byproduct of digital compression methods such as JPEG and MPEG, which permanently discard pixels. The greater the compression used, the more artifacts are likely, and fast motion sequences are a major contributor. As TV screens become larger, the distortions are more noticeable. In digital cameras, artifacts may arise when performing digital zoom. When analog material is converted to digital, tiny discrepancies (quantization errors) may result. See blocking artifacts, mosquito noise, feathering and quantization error.
References in periodicals archive ?
Malvar (1998) designed a lapped transform to reduce the blocking and ringing artifacts.
American archeologist Oscar White Muscarella, a former curator of the Metropolitan Museum of Art in New York, says he, too, believes the artifact is a fake.
The artifact is a part of the Nimrod Temple, which is located in Northern Iraq near Mosul, and is around 100 CM high and 40 cm wide.
It is obvious from the ECG in Figure 1 that artifacts can be misinterpreted as ventricular tachycardia.
The measured causation is assumed to be due to "naturally" occurring interactions between people and technological artifact.
At left, this wall relief and many other artifacts will be on display during the free exhibit that opens Saturday at the Lancaster Art Museum.
We here gather the main results of our previous investigations [43, 24, 40], and provide a self-contained description of the role of coordination artifacts in the engineering of MAS environments.
I found the topic abstruse, filled with mind-numbing legal documents and visually stunning artifacts.
In the Dorset, things were in the process of being demolished, but the artifacts were strictly contemporary; on the other hand, the brownstones were mostly abandoned, and though the wrecking ball hadn't come close to them yet, they were really on the verge of oblivion.
We report a rare artifact observed during electronystagmography (ENG) in a 54-year-old-woman.
The certification portfolio consists of a collection of artifacts (7) that defend the teaching qualities described in Standards II, III and IV.
Sharing proprietary technology across the enterprise increases ROI, as those artifacts are used over and over again.