Re: Removing grill/grate - "horizontal stripes in background"

Posted by Kiwa on
URL: http://imagej.273.s1.nabble.com/Removing-grill-grate-horizontal-stripes-in-background-tp5009203p5009210.html

@Joel :
Hi Joel,
Thanks for your response.
 With some other operations with your image as a starting point I got this :



This kind of result is fine, since I can get the coverage of the food on the belt from an histogram.
However, FFT and inverse FFT seems to take some time, so it maybe not fit a live camera feed.
But it is still a nice first solution for my problem !

How did you choose to use R=34.4 ?
Since my goal is to make it automatic for every frame of a video, I wonder if I can put it as a parameter.
Does it mean that the filter is cutting small frequencies (ie small edges?) ?
Is it already filtering only horizontal small frequencies ? if not, is there any other selection filter (your circle) that I can use to cut only the horizontal line ?

Thanks again!



Regards,
Kiwa.