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| -rw-r--r-- | doc/man/hdfsee.1 | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/doc/man/hdfsee.1 b/doc/man/hdfsee.1 index e362a0a0..11a70630 100644 --- a/doc/man/hdfsee.1 +++ b/doc/man/hdfsee.1 @@ -73,14 +73,14 @@ Show rings on the image with the radii specified. \fIradii\fR can be a comma-de Use \fIscale\fR as the colour scale. Possible scales are: \fBmono\fR, \fBinvmono\fR and \fBcolour\fR. .PD 0 -.IP \fB--filter-cm\fR +.IP \fB--median-filter=\fR\fIn\fR .PD -Attempt to subtract common-mode noise from the image. +Apply a median filter with box "radius" \fIn\fR to the image. Each pixel will be set to the median of the values from a \fI(n+1)\fRx\fI(n+1)\fR square centered on the pixel. This might help with peak detection if the background is high and/or noisy. The \fIunfiltered\fR image will be used for the final integration of the peaks. If you also use \fB--noise-filter\fR, the median filter will be applied first. .PD 0 .IP \fB--filter-noise\fR .PD -Apply a noise filter to the image with checks 3x3 squares of pixels and sets all of them to zero if any of the nine pixels have a negative value. +Apply a noise filter to the image with checks 3x3 squares of pixels and sets all of them to zero if any of the nine pixels have a negative value. This filter may help with peak detection under certain circumstances. The \fIunfiltered\fR image will be used for the final integration of the peaks, because the filter is destroys a lot of information from the pattern. If you also use \fB--median-filter\fR, the median filter will be applied first. .SH AUTHOR This page was written by Thomas White. |