Raster graphics

Rasterraster imagebitmapbitmap graphicsraster imagesbitmappedraster displayraster graphicpixel graphicsbitmapped graphics
In computer graphics, a raster graphics or bitmap image is a dot matrix data structure that represents a generally rectangular grid of pixels (points of color), viewable via a monitor, paper, or other display medium.wikipedia
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Color depth

truecolorbit depthtrue color
A raster is technically characterized by the width and height of the image in pixels and by the number of bits per pixel (or color depth, which determines the number of colors it can represent).
Color depth or colour depth (see spelling differences), also known as bit depth, is either the number of bits used to indicate the color of a single pixel, in a bitmapped image or video framebuffer, or the number of bits used for each color component of a single pixel.

Bitmap

bitmap imagepixmapbitmaps
A bitmap is a rectangular grid of pixels, with each pixel's color being specified by a number of bits.
Raster images in general may be referred to as bitmaps or pixmaps, whether synthetic or photographic, in files or memory.

Vector graphics

vectorvector graphicvector-based
The opposite to contones is "line work", usually implemented as vector graphics in digital systems. This property contrasts with the capabilities of vector graphics, which easily scale up to the quality of the device rendering them. Raster-based image editors, such as Painter, Photoshop, Paint.NET, MS Paint, and GIMP, revolve around editing pixels, unlike vector-based image editors, such as Xfig, CorelDRAW, Adobe Illustrator, or Inkscape, which revolve around editing lines and shapes (vectors).
Vector graphics are commonly found today in the SVG, EPS and PDF graphic file formats and are intrinsically different from the more common raster graphics file formats of JPEG, PNG, APNG, GIF, and MPEG4.

Image tracing

raster to vector conversionRaster-to-vectorRaster-to-vector conversion
Vector images can be rasterized (converted into pixels), and raster images vectorized (raster images converted into vector graphics), by software.
In computer graphics, image tracing, raster-to-vector conversion or vectorization is the conversion of raster graphics into vector graphics.

Rasterisation

rasterizationrasterizedrasterizer
Vector images can be rasterized (converted into pixels), and raster images vectorized (raster images converted into vector graphics), by software.
Rasterisation (or rasterization) is the task of taking an image described in a vector graphics format (shapes) and converting it into a raster image ( A series of pixels, dots or lines that when they come together on a display, they recreate the image).

Raster scan

rasterraster scanningscan
It originates from the raster scan of cathode ray tube (CRT) video monitors, which paint the image line by line by magnetically steering a focused electron beam.
By analogy, the term is used for raster graphics, the pattern of image storage and transmission used in most computer bitmap image systems.

Dot matrix

dot-matrixall points addressableAPA
In computer graphics, a raster graphics or bitmap image is a dot matrix data structure that represents a generally rectangular grid of pixels (points of color), viewable via a monitor, paper, or other display medium.
First the information to be printed is converted into a dot matrix using a raster image processor, and the output is a dot matrix referred to as a raster image, which is a complete full-page rendering of the information to be printed.

Computer graphics

graphicsCGcomputer-generated
In computer graphics, a raster graphics or bitmap image is a dot matrix data structure that represents a generally rectangular grid of pixels (points of color), viewable via a monitor, paper, or other display medium.
A large form of digital art, pixel art is created through the use of raster graphics software, where images are edited on the pixel level.

Image file formats

image file formatgraphics file formatimage file
Raster images are stored in image files with varying formats. Most computer images are stored in raster graphics formats or compressed variations, including GIF, JPEG, and PNG, which are popular on the World Wide Web.
Image files are composed of digital data in one of these formats that can be rasterized for use on a computer display or printer.

GIF

animated GIF.gifgifs
Most computer images are stored in raster graphics formats or compressed variations, including GIF, JPEG, and PNG, which are popular on the World Wide Web.
The Graphics Interchange Format (GIF, or ), is a bitmap image format animation that was developed by a team at the online services provider CompuServe led by American computer scientist Steve Wilhite on June 15, 1987.

Graphics processing unit

GPUGPUsgraphics processor
The refresh procedure, being speed critical, is often implemented by dedicated circuitry, often as a part of a graphics processing unit.
The Atari 8-bit computers (1979) had ANTIC, a video processor which interpreted instructions describing a "display list"—the way the scan lines map to specific bitmapped or character modes and where the memory is stored (so there did not need to be a contiguous frame buffer).

Voxel

voxelsvoxel-basedvolume data
Three-dimensional voxel raster graphics are employed in video games and are also used in medical imaging such as MRI scanners.
Both ray-tracing and ray-casting, as well as rasterisation, can be applied to voxel data to obtain 2D raster graphics to depict on a monitor.

Rendering (computer graphics)

renderingrenderedrender
This property contrasts with the capabilities of vector graphics, which easily scale up to the quality of the device rendering them.
The data contained in the scene file is then passed to a rendering program to be processed and output to a digital image or raster graphics image file.

Cathode-ray tube

CRTcathode ray tubecathode ray tubes
It originates from the raster scan of cathode ray tube (CRT) video monitors, which paint the image line by line by magnetically steering a focused electron beam.
The same techniques (and major circuit components) also make possible the adjustment of display image rotation, skew, and other complex raster geometry parameters through electronics under user control.

Geographic information system

GISgeographic information systemsgeographical information system
GIS programs commonly use rasters that encode geographic data in the pixel values as well as the pixel locations.
Traditionally, there are two broad methods used to store data in a GIS for both kinds of abstractions mapping references: raster images and vector.

Corel Painter

PainterFractal Design PainterCorel Painter X
Raster-based image editors, such as Painter, Photoshop, Paint.NET, MS Paint, and GIMP, revolve around editing pixels, unlike vector-based image editors, such as Xfig, CorelDRAW, Adobe Illustrator, or Inkscape, which revolve around editing lines and shapes (vectors).
Corel Painter is a raster-based digital art application created to simulate as accurately as possible the appearance and behavior of traditional media associated with drawing, painting, and printmaking.

Adobe Photoshop

PhotoshopPSDPhotoshopped
Raster-based image editors, such as Painter, Photoshop, Paint.NET, MS Paint, and GIMP, revolve around editing pixels, unlike vector-based image editors, such as Xfig, CorelDRAW, Adobe Illustrator, or Inkscape, which revolve around editing lines and shapes (vectors).
Since then, it has become the de facto industry standard in raster graphics editing, to the point that Photoshop has become a generic trademark leading to its use as a verb such as "to photoshop an image," "photoshopping" and "photoshop contest", though Adobe discourages such use.

Pixel

megapixelpxMP
In computer graphics, a raster graphics or bitmap image is a dot matrix data structure that represents a generally rectangular grid of pixels (points of color), viewable via a monitor, paper, or other display medium. Raster-based image editors, such as Painter, Photoshop, Paint.NET, MS Paint, and GIMP, revolve around editing pixels, unlike vector-based image editors, such as Xfig, CorelDRAW, Adobe Illustrator, or Inkscape, which revolve around editing lines and shapes (vectors).
In digital imaging, a pixel, pel, dots, or picture element is a physical point in a raster image, or the smallest addressable element in an all points addressable display device; so it is the smallest controllable element of a picture represented on the screen.

Inkscape

Raster-based image editors, such as Painter, Photoshop, Paint.NET, MS Paint, and GIMP, revolve around editing pixels, unlike vector-based image editors, such as Xfig, CorelDRAW, Adobe Illustrator, or Inkscape, which revolve around editing lines and shapes (vectors).
Embedding and optional tracing of raster graphics is also supported, enabling the editor to create vector graphics from photos and other raster sources.

Semigraphics

block graphicstext semigraphicsa matrix of blocky pixels instead of a letter
Text semigraphics
Text-based semigraphics or pseudographics is a primitive method used in early text mode video hardware to emulate raster graphics without having to implement the logic for such a display mode.

Raster graphics editor

bitmap graphics editorpaint programphoto editor
Raster graphics editor
A raster graphics editor is a computer program that allows users to create and edit images interactively on the computer screen and save them in one of many "bitmap" or "raster" formats such as JPEG, PNG, GIF and TIFF.

Raster image processor

RIPraster image processingraster
Raster image processor
A raster image processor (RIP) is a component used in a printing system which produces a raster image also known as a bitmap.

Display device

displayvideo monitorbezel
It originates from the raster scan of cathode ray tube (CRT) video monitors, which paint the image line by line by magnetically steering a focused electron beam.
Vector graphics vs. Raster graphics

Graphic design

designgraphicart and design
Raster graphics deal more practically than vector graphics with photographs and photo-realistic images, while vector graphics often serve better for typesetting or for graphic design.
Designers often use pre-designed raster images and vector graphics in their work from online design databases.

Halftone

half-tonehalftoninghalftones
However, for printing technologies that perform color mixing through dithering (halftone) rather than through overprinting (virtually all home/office inkjet and laser printers), printer DPI and image PPI have a very different meaning, and this can be misleading.
Digital halftoning uses a raster image or bitmap within which each monochrome picture element or pixel may be on or off, ink or no ink.