Blurring [r]
is a two‐dimensional directive specifying that graphics objects are to be drawn with a blur effect of radius r.
Blurring
Blurring [r]
is a two‐dimensional directive specifying that graphics objects are to be drawn with a blur effect of radius r.
Details
- Blurring is also know as blur and Gaussian blur.
- Blurring is typically used to soften images of graphics objects and to hide object features.
- Blurring [r] specifies that r printer's points should be blended into each other.
- The radius r is measured in units of printer's points, equal before magnification to of an inch.
- Blurring [{r1,r2}] uses radius r1 in width and radius r2 in height.
- Blurring [r] is effectively equivalent to Blurring [{r,r}].
- Blurring [] is effectively equivalent to Blurring [3].
- ImageScaled can be used to specify the radius and is taken to be fractions of the default image size.
Examples
open all close allBasic Examples (3)
Apply blur to text:
Plot several functions:
Highlight a region around Paris:
Scope (12)
Basic Uses (8)
Specifications (4)
Blurring [] applies a slight uniform blur:
Specify the blur radius:
Specify separate blur radii for the horizontal and vertical directions:
The blur radius is specified in printer's points by default:
Use an ImageScaled radius:
Applications (9)
Basic Applications (3)
Blur Effects (4)
Simulate a depth-of-field effect with images:
Simulate a depth-of-field effect with graphics primitives:
Create a drop shadow:
Use DropShadowing to get the same effect:
Emphasize part of a visualization:
Blur all country names except "Sweden":
Visualization (2)
Plot curves with blurring:
Style bar charts:
Properties & Relations (2)
Interactive Examples (2)
Simulate a depth-of-field effect:
Emphasize the country being moused over:
Related Guides
History
Text
Wolfram Research (2022), Blurring, Wolfram Language function, https://reference.wolfram.com/language/ref/Blurring.html.
CMS
Wolfram Language. 2022. "Blurring." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/Blurring.html.
APA
Wolfram Language. (2022). Blurring. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/Blurring.html
BibTeX
@misc{reference.wolfram_2025_blurring, author="Wolfram Research", title="{Blurring}", year="2022", howpublished="\url{https://reference.wolfram.com/language/ref/Blurring.html}", note=[Accessed: 16-November-2025]}
BibLaTeX
@online{reference.wolfram_2025_blurring, organization={Wolfram Research}, title={Blurring}, year={2022}, url={https://reference.wolfram.com/language/ref/Blurring.html}, note=[Accessed: 16-November-2025]}