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Use Gaussian Blur on an Image in GIMP

Edited by Freya, VisiHow, Eng, Visihow Admin

3 Parts:

Steps

Video: Use Gaussian Blur on an Image in GIMP

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You're watching VisiHow. In this tutorial, we're going to show you how to apply a "Gaussian Blur" effect to an image in GIMP in Windows 7.

Apply a Gaussian blur to an image on GIMP.mp4-canvas129 459615.jpg

Steps

1
You should have GIMP open and an image ready to use
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For more information, refer to our tutorials on how to open GIMP and how to open existing documents in GIMP.

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2
First, click "Filters"
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It is in the horizontal menu along the top of the window.

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3
Move the cursor to "Blur" in the menu
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4
Then, click "Gaussian Blur..." in the expanded menu
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"Gaussian Blur" is the second option on this list. A small dialogue box will appear.

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5
You can move the box around on the screen
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6
Ensure that the "Preview" box is checked
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This will allow you to see how much the blur will change your image.

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7
You can also click the arrows or the scrollers next to the preview to navigate it
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Underneath the preview, there is the "Blur Radius" section.
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8
You can change the "Horizontal" and "Vertical" radius values
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By default, they are set to 5.0; but you can change those by using the up and down arrows or by typing your values in the text boxes to the right. As you update one value, the other value changes to the same value.

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9
You can click the chain icon
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Breaking the chain will unlink horizontal and vertical values. You will be able to change both to different values. This may create a motion blur effect.
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10
Finally, click the unit drop-down box
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You can change the measurement unit of the "Blur Radius" values by clicking one of the units. The default setting is "px", which stands for "pixels", works well.
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11
If you decide you don't want to use the blur, click "Cancel"
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12
Click "OK" if you are satisfied with your settings
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The green line will mean that the layer is processed. A very slight "Gaussian Blur" effect will be applied to the layer. To see how the effect really works, zoom out of the preview before you apply the changes.
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This is a VisiHow tutorial, and we've just shown you how to add a "Gaussian Blur" filter to an image in GIMP in Windows 7. If you have any questions or comments regarding this tutorial or the program used, just add them to the section below. Thank you for choosing VisiHow!

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