raster
gb/ɹˈæstɚ/ us/ɹˈæstɚ/
C1
English
raszterkép, raszter
NOUN
C1
TECHNICAL
1
raszterkép
C1
Usage pattern:
a raster; [something] as a raster; often before another noun: raster image/graphics/file
The icon is stored as a raster, so enlarging it too much makes the edges look jagged.
Az ikon raszterképként van tárolva, ezért ha túlságosan felnagyítod, recésnek látszanak a szélei.
Most photographs on the web are rasters rather than vectors.
A weben található fényképek többsége raszterkép, nem pedig vektorgrafika.
The printer needs a high-resolution raster to produce sharp output.
Learner examples
A raster is made of pixels.
A raszterkép pixelekből áll.
The small raster became blurry when I enlarged it.
A kis raszterkép elmosódott lett, amikor felnagyítottam.
Common mistake:
Do not confuse raster with vector; raster images can lose sharpness when enlarged.
Meaning
pixel-based image grid
Collocations
raster image
|raster graphics
|raster file
|raster format
|high-resolution raster
|raster artwork
|raster texture
|raster editor
|raster output
|raster map
Synonyms
bitmap (Very close in computing; sometimes used for particular pixel-based image files or formats.)
|
pixel image (More descriptive and less technical than raster.)
Antonyms
vector graphic (Uses mathematical paths and shapes rather than fixed pixels.)
|
vector image (Can usually be scaled without pixelation, unlike a raster.)
Themes
computing
|digital_media
|graphic_design
|photography
Definition
a digital image made from many tiny pixels in a grid
A rectangular grid of pixels or cells used to store or display a digital image, as opposed to a vector representation made from mathematical lines and shapes.
NOUN
C2
TECHNICAL
2
raszter
C2
Usage pattern:
a raster; [type] raster; raster(s) of/for [area or measurement]
The elevation model is a raster with one height value for each cell.
A domborzatmodell egy olyan raszter, amelyben minden cellához egy magassági érték tartozik.
The analyst combined several rasters to compare rainfall, slope, and vegetation.
Az elemző több rasztert kombinált, hogy összehasonlítsa a csapadékot, a lejtést és a növényzetet.
In the map, darker raster cells show areas with higher surface temperature.
Learner examples
The map uses a raster to show temperature.
A térkép rasztert használ a hőmérséklet megjelenítésére.
Each cell in the raster has a number.
A raszter minden cellájában egy szám van.
Common mistake:
Do not confuse a GIS raster with vector data, which uses points, lines, and polygons.
Meaning
gridded geospatial data
Collocations
elevation raster
|land-cover raster
|climate raster
|satellite raster
|raster dataset
|raster layer
|raster cell
|raster value
|raster resolution
|raster analysis
Synonyms
grid dataset (Descriptive term for the same kind of cell-based spatial data.)
|
gridded data (Broader term that may be used outside GIS as well.)
Antonyms
vector data (Represents spatial features as points, lines, and polygons rather than grid cells.)
Themes
gis
|mapping
|geography
|data_science
Definition
map data made from many small cells, with a value in each cell
In GIS and mapping, a dataset that represents an area as a regular grid of cells, each holding a value such as elevation, temperature, or land cover.
NOUN
C2
TECHNICAL
3
raszter
C2
Usage pattern:
the raster; a [display/television/video] raster
On a CRT, the electron beam traces the raster from left to right and top to bottom.
A CRT-ben az elektronsugár balról jobbra és fentről lefelé rajzolja ki a rasztert.
A fault in the video signal distorted the raster and made the picture roll.
A videojel hibája eltorzította a rasztert, és a kép futni kezdett.
The emulator can display the faint raster lines of an old arcade monitor.
Learner examples
The old screen drew the picture in a raster.
A régi képernyő raszterben rajzolta ki a képet.
Common mistake:
Raster scan is the scanning method; raster can mean the pattern produced by that method.
Meaning
screen scan-line pattern
Collocations
raster scan
|television raster
|video raster
|CRT raster
|display raster
|raster line
|raster pattern
|scan raster
Synonyms
scan pattern (More general and less specific than raster.)
|
scan-line pattern (Emphasizes the visible or technical lines in the display.)
Antonyms
vector scan (Draws lines or shapes directly instead of scanning the whole image line by line.)
Themes
electronics
|video
|television
|display_technology
Definition
the line-by-line pattern used to draw an image on some screens
The regular pattern of parallel scan lines used to form an image on a television, monitor, scanner, or similar display system.
Grammar
Dictionary form
raster
IPA
GB/ɹˈæstɚ/
US/ɹˈæstɚ/
Syllables & stress
ras - ter (2 syllables)
Stress on 1st syllable (ras)
Word forms
Noun
- Base: raster
- Plural: rasters
Expressions
raster format
1/ɹˈæstɚ fˈɔɹmˌæt/
fixed phrase
technical
pixel-based image file type
a type of image file that stores pixels
Examples
- PNG, JPEG, and TIFF are common raster formats.
- Save the scanned document in a raster format if you only need a picture.
- The designer chose a raster format because the image was a photograph.
Learner examples
- JPEG is a raster format.
- I saved the photo in a raster format.
raster graphics
1/ɹˈæstɚ ɡɹˈæfɪks/
fixed phrase
technical
pixel-based computer graphics
digital graphics made from pixels
Examples
- The app supports both raster graphics and vector graphics.
- Raster graphics are good for photographs but less convenient for editable logos.
- She learned raster graphics editing in Photoshop.
Learner examples
- Raster graphics use pixels.
- The class compared raster graphics and vector graphics.
raster image
1/ɹˈæstɚ ˈɪmɪd͡ʒ/
fixed phrase
technical
pixel-based digital picture
a picture made of many tiny pixels
Examples
- She exported the drawing as a raster image for the website.
- A raster image may look pixelated when it is enlarged.
- Use a vector logo for scaling, not a small raster image.
Learner examples
- A photo is usually a raster image.
- The raster image became blurry.
raster scan
1/ɹˈæstɚ skˈæn/
fixed phrase
technical
line-by-line screen scanning
a way of drawing or reading an image one line at a time
Examples
- The monitor refreshes the display with a raster scan.
- Early television cameras read the scene with a raster scan.
- In a raster scan, the system moves across each line before starting the next one.
Learner examples
- The screen uses a raster scan.
- A raster scan goes line by line.
raster-to-vector conversion
1/ɹˈæstɚ tə vˈɛktɚ kənvˈɚʒən/
fixed phrase
technical
pixel-to-vector conversion process
changing a pixel image into editable vector shapes
Examples
- Raster-to-vector conversion turned the scanned map into editable lines.
- Good raster-to-vector conversion depends on clean source images.
- The company used raster-to-vector conversion to rebuild old floor plans in CAD software.
Learner examples
- Raster-to-vector conversion made the map editable.