OOF2: The Manual
| OOF.Image.Modify.Blur | ||
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6.2. Menus |  |
Name
OOF.Image.Modify.Blur — Blur an image by convolving it with a Gaussian.
Synopsis
OOF.Image.Modify.Blur(image, radius, sigma)
Details
- Parent Menu: OOF.Image.Modify
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Callback: function
doImageModin moduleooflib.image.imagemodifier -
Parameters:
image- Type: The path to an existing
Imageobject. radius- Radius of the Gaussian, in pixels, not counting the center pixel. Type: A positive real number.
sigma- Standard deviation of the Gaussian, in pixels. Type: A positive real number.
Description
Blur the given image. This can be a useful way
of reducing noise, at the obvious expense of a loss of resolution.
The image is convolved with a Gaussian operator whose standard
deviation is sigma.
The radius parameter is the size of the mask used
to perform the convolution, in pixels. The new value of a pixel is
the Gaussian weighted average of the pixel values in a
square with sides of length
2*radius+1 in pixel units, centered on the pixel.
In a color image, each RGB channel is blurred separately.
This routine uses skimage.filters.gaussian from
the scikit-image library.
Figure 6.31. Blurring an Image
The lefthand image is a 200×200 pixels micrograph of Si3N4 on the left,(courtesy of C.-H. Hsueh). The other two images are the results of blurring it with the given parameters.
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| OOF.Image.Modify.AddNoise |  |
OOF.Image.Modify.Contrast |