Use Gaussian Blur on an Image in GIMP

Edited by Freya, VisiHow, Eng, Anonymous

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

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Steps

  1. 1
    You should have GIMP open and an image ready to use.
    For more information, refer to our tutorials on how to open GIMP and how to open existing documents in GIMP.
    Apply a Gaussian blur to an image on GIMP.mp4-canvas6 07095.jpg
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  2. 2
    First, click "Filters".
    It is in the horizontal menu along the top of the window.
    Apply a Gaussian blur to an image on GIMP.mp4-canvas21 153674.jpg
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  3. 3
    Move the cursor to "Blur" in the menu.
    Apply a Gaussian blur to an image on GIMP.mp4-canvas32 330642.jpg
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  4. 4
    Then, click "Gaussian Blur..." in the expanded menu.
    "Gaussian Blur" is the second option on this list. A small dialogue box will appear.
    Apply a Gaussian blur to an image on GIMP.mp4-canvas37 237002.jpg
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  5. 5
    You can move the box around on the screen.
    Apply a Gaussian blur to an image on GIMP.mp4-canvas43 334106.jpg
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  6. 6
    Ensure that the "Preview" box is checked.
    This will allow you to see how much the blur will change your image.
    Apply a Gaussian blur to an image on GIMP.mp4-canvas48 670954.jpg
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  7. 7
    You can also click the arrows or the scrollers next to the preview to navigate it.
    Underneath the preview, there is the "Blur Radius" section.
    Apply a Gaussian blur to an image on GIMP.mp4-canvas65 25958.jpg
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  8. 8
    You can change the "Horizontal" and "Vertical" radius values.
    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.
    Apply a Gaussian blur to an image on GIMP.mp4-canvas79 878864.jpg
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  9. 9
    You can click the chain icon.
    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.
    Apply a Gaussian blur to an image on GIMP.mp4-canvas99 939864.jpg
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  10. 10
    Finally, click the unit drop-down box.
    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.
    Apply a Gaussian blur to an image on GIMP.mp4-canvas123 356864.jpg
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  11. 11
    If you decide you don't want to use the blur, click "Cancel".
    Apply a Gaussian blur to an image on GIMP.mp4-canvas133 756863.jpg
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  12. 12
    Click "OK" if you are satisfied with your settings.
    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.
    Apply a Gaussian blur to an image on GIMP.mp4-canvas137 057863.jpg
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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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Categories : Software

Recent edits by: Eng, VisiHow, Freya

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