raster
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.
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.
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.
- Base: raster
- Plural: rasters
raster format
1pixel-based image file type
a type of image file that stores pixels
- 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.
- JPEG is a raster format.
- I saved the photo in a raster format.
raster graphics
1pixel-based computer graphics
digital graphics made from pixels
- 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.
- Raster graphics use pixels.
- The class compared raster graphics and vector graphics.
raster image
1pixel-based digital picture
a picture made of many tiny pixels
- 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.
- A photo is usually a raster image.
- The raster image became blurry.
raster scan
1line-by-line screen scanning
a way of drawing or reading an image one line at a time
- 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.
- The screen uses a raster scan.
- A raster scan goes line by line.
raster-to-vector conversion
1pixel-to-vector conversion process
changing a pixel image into editable vector shapes
- 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.
- Raster-to-vector conversion made the map editable.