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Dear Bruno, Thanks a lot for the shorter version, makes sense. May I ask why you are using iA(:).' ? What is the difference to ...

13770 views

Responded 6 years ago

Dear Bruno and everyone else who has replied, I have tried your code and it works nicely, thank you very much! However, I would...

Just to clarify, instead of making everything NaN in the surround of a NaN, I would like it to ignore the NaN, so that it is pro...

Hi, at the moment it propagates the NaN, i.e. it sets everything NaN that has at least one NaN in its surround (3x3 per default)...

Hi all, I have got a 2D matrix (an image), that I would like to median filter. Usually I'd use medfilt2, but my matrix also con...

Posted 6 years ago

Hi, I just looked into computing an approximate second derivative with Matlab and found the answer given by Aasim (above). How...

9521 views

Responded 2 years ago

Hi again, sorry for the confusion, of course you were right, Bruno. No idea where the long processing time came from, but each w...

1364 views

Responded 5 years ago

Well, as I said, the calculations are run in a while loop, so it's not just the one calculation. Also, I had to add a couple ext...

Dear Bruno, Thanks for the suggestion, it is still a bit slow though - I was quite surprised by that. In my application, I repe...

Dear Bruno, Thanks a lot for your reply. Unfortunately I don't want to just perform a dilation. Only if there are two 2s in th...

Sorry, the subject line should read vectorization - grayscale applylut?

Hi there, I've got a 2D matrix filled with 0s, 1s and 2s. Now for each pixel, I want to calculate its new value from the 3x3 ne...

Posted 5 years ago