Description:
To enhance the signal to noise ratio in EM pictures it is useful to filter images with non-linear filters, which preserve the
edges and smooth the surrounding areas. The BilateralFilter provides a good option (Jiang,W., Baker,M. L., Wu,Q., Bajaj,C.
and Chiu,W. (2003). Applications of a bilateral denoising filter in biological electron microscopy.
J. Struct. Biol. 144: 114?122). It can be computed with the following
equation:
where σI defines the intensity range and σD defines the smoothing factor.
xi and xj are giving the pixel position and Ii and Ij
are giving the intensity of the pixel.
To generate the filtered image press the Apply button.
Ports:
Sigma distance
This number field sets the smoothing factor σD to the entered value.
Sigma intensity
This number field sets the intensity range σI to the entered value.
Filter size
This number field sets the filter kernel size to 2*Filter_size+1. Because of the high operational costs of
N2 the Filter_size should be kept below 5, otherwise the operation has long running times.
Additional information
| 
