(redirected from blocking artifacts)
Also found in: Thesaurus, Medical, Encyclopedia.


also ar·te·fact  (är′tə-făkt′)
1. An object produced or shaped by human craft, especially a tool, weapon, or ornament of archaeological or historical interest.
2. Something viewed as a product of human conception or agency rather than an inherent element: "Morality is an artifact of human culture, devised to help us negotiate social relations" (Michael Pollan).
3. A phenomenon or feature not originally present or expected and caused by an interfering external agent, action, or process, as an unwanted feature in a microscopic specimen after fixation, in a digitally reproduced image, or in a digital audio recording.
4. An inaccurate observation, effect, or result, especially one resulting from the technology used in scientific investigation or from experimental error: The apparent pattern in the data was an artifact of the collection method.

[Latin arte, ablative of ars, art; see art1 + factum, something made (from neuter past participle of facere, to make; see dhē- in Indo-European roots).]

ar′ti·fac′tu·al (-făk′cho͝o-əl) adj.


a variant spelling of artefact


or ar•te•fact

(ˈɑr təˌfækt)

1. any object made by human beings, esp. with a view to subsequent use.
2. a handmade object, as a tool, or the remains of one, as a shard of pottery, belonging to an earlier time or cultural stage, esp. such an object found at an archaeological excavation.
3. a substance or structure not naturally present in the matter being observed but formed by artificial means, as during preparation of a microscope slide.
4. a spurious observation or result arising from preparatory procedures.
5. any feature that is not naturally present but is a product of an extrinsic agent.
[1815–25; variant of artefact < Latin phrase arte factum (something) made with skill. See art1, fact]
ar`ti•fac•ti′tious (-fækˈtɪʃ əs) adj.
ar`ti•fac′tu•al (-ˈfæk tʃu əl) adj.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.artifact - a man-made object taken as a wholeartifact - a man-made object taken as a whole  
whole, unit - an assemblage of parts that is regarded as a single entity; "how big is that part compared to the whole?"; "the team is a unit"
article - one of a class of artifacts; "an article of clothing"
facility - something designed and created to serve a particular function and to afford a particular convenience or service; "catering facilities"; "toilet facilities"; "educational facilities"
Americana - any artifact (such as books or furniture or art) that is distinctive of America
anachronism - an artifact that belongs to another time
antiquity - an artifact surviving from the past
block - a solid piece of something (usually having flat rectangular sides); "the pyramids were built with large stone blocks"
button - any artifact that resembles a button
commodity, trade good, good - articles of commerce
cone - any cone-shaped artifact
covering - an artifact that covers something else (usually to protect or shelter or conceal it)
creation - an artifact that has been brought into existence by someone
decker - (often used in combinations) something constructed with multiple levels; "they rode in a double-decker bus"
decoration, ornament, ornamentation - something used to beautify
electroplate - any artifact that has been plated with a thin coat of metal by electrolysis
excavation - a hole in the ground made by excavating
duplicate, extra - something additional of the same kind; "he always carried extras in case of an emergency"
cloth, fabric, textile, material - artifact made by weaving or felting or knitting or crocheting natural or synthetic fibers; "the fabric in the curtains was light and semitransparent"; "woven cloth originated in Mesopotamia around 5000 BC"; "she measured off enough material for a dress"
facility, installation - a building or place that provides a particular service or is used for a particular industry; "the assembly plant is an enormous facility"
fixture - an object firmly fixed in place (especially in a household)
float - something that floats on the surface of water
insert, inset - an artifact that is inserted or is to be inserted
instrumentation, instrumentality - an artifact (or system of artifacts) that is instrumental in accomplishing some end
layer, bed - single thickness of usually some homogeneous substance; "slices of hard-boiled egg on a bed of spinach"
stinker, lemon - an artifact (especially an automobile) that is defective or unsatisfactory
line - something (as a cord or rope) that is long and thin and flexible; "a washing line"
marker - some conspicuous object used to distinguish or mark something; "the buoys were markers for the channel"
mystification - something designed to mystify or bewilder
opening - a vacant or unobstructed space that is man-made; "they left a small opening for the cat at the bottom of the door"
cushioning, padding - artifact consisting of soft or resilient material used to fill or give shape or protect or add comfort
plaything, toy - an artifact designed to be played with
ready-made - a manufactured artifact (as a garment or piece of furniture) that is made in advance and available for purchase; "their apartment was furnished with ready-mades"
restoration - some artifact that has been restored or reconstructed; "the restoration looked exactly like the original"
flat solid, sheet - a flat artifact that is thin relative to its length and width
sphere - any spherically shaped artifact
square - any artifact having a shape similar to a plane geometric figure with four equal sides and four right angles; "a checkerboard has 64 squares"
squeaker - any artifact that makes a squeaking sound when used; "those sneakers are squeakers"; "which hinge is the squeaker?"
strip, slip - artifact consisting of a narrow flat piece of material
structure, construction - a thing constructed; a complex entity constructed of many parts; "the structure consisted of a series of arches"; "she wore her hair in an amazing construction of whirls and ribbons"
surface - the outer boundary of an artifact or a material layer constituting or resembling such a boundary; "there is a special cleaner for these surfaces"; "the cloth had a pattern of red dots on a white surface"
thing - an artifact; "how does this thing work?"
track - a pair of parallel rails providing a runway for wheels
way - any artifact consisting of a road or path affording passage from one place to another; "he said he was looking for the way out"
weight - an artifact that is heavy
building material - material used for constructing buildings
paving, paving material, pavement - material used to pave an area
natural object - an object occurring naturally; not made by man


[ˈɑːrtɪfækt] n (US)objet m fabriqué
References in periodicals archive ?
The state-of-art dark channel prior effectively prevents the appearance of color distortion in haze-free region, but also produces blocking artifacts. In order to eliminate the blocking artifacts, guided image filter is employed.
One of the main drawbacks of this method is that it produces blocking artifacts in the image.
In this indirect way, we can get some improvement of rate-distortion performance; however, these features only reveal the varying of local pixel values, which improves the objective quality of reconstructed image but results in poor visual quality, which is shown especially by the occurrence of many blocking artifacts. In view of the above-mentioned, the proper feature is required to guide the adaptive sampling so as to improve the rate-distortion performance as well as guarantee a better visual quality.
Block-based CS (BCS) hybrid coding framework [15-17] solves the problem of high computational complexity of decoding by measuring and recovering nonoverlapping blocks independently, but nonstationary statistics of image could lead to blocking artifacts. Different statistics of block result in different sparsity of block; thus the measurement times of block should be set accordingly.
Furthermore, it is very important to use the median filter in fusion scheme, which can make fused images smooth and reduce blocking artifacts. Combined with all the vectors, the fused image [I.sub.F] is reconstructed via a single stage of SPL iterations.
However, loss of correlation between adjacent blocks during quantization process in compression results in visually disturbing artifacts called blocking artifacts. The latest H.264/AVC incorporates deblocking filter for reduction of blocking artifacts.
The deblocking filter (DF) reduces blocking artifacts in encoded video sequences, and thereby significantly improves the subjective and objective quality of videos.
"Performance & Analysis of Blocking Artifacts Reduction Using Guassian Adaptive Spatial Low Pass Filter", Journal of Theoretical and Applied Information Technology, 68(01): 149-155.
The problem of blocking artifacts is very common in block-based image and video compression, especially at very low bit rates.
Blocking artifacts occur when there are signal discontinuities at block boundaries (Chen, T.
3(a) have fewer blocking artifacts and are more accurate especially at image edges.
However, DCT is not the best choice in image coding, because block DCT transform coding has serious blocking artifacts when the image is highly compressed at low bit rates.