by Discount Bluehost

Retina Exercise

Published: Tuesday, 24 December 2013

Retina Image

Retina Image

Task: Extract the micro-aneurisms of the retina image.

Approach: Aneurisms are considered as residuals of openings, hence extracted by top-hats. Three openings are compared: hexagonal, union of linear ones, reconstruction.

Keywords: opening by adjunction, opening by reconstruction, anisotropy, residual, top hat.


Thresholded tophats by different structuring elements: by 8 connected square (left), by single segment (center), by opening by reconstruction using the union of linear openings as marker (right).

Structuring element for family of linear openings

Comments: The structuring element here as seen is important to determine the shape of the background features that need to be removed by the tophat. The next improvement is due to the reconstruction by opening of the Input image using the (linear structuring element) opened Image as Marker. This removes small local minimas and preserves the large ones that correspond to the anneurisms.

Hits: 5634


0 #18 Casey 2019-11-26 23:39
The other day, while I was at work, my cousin stole
my apple ipad and tested to see if it can survive a 25
foot drop, just so she can be a youtube sensation. My apple ipad is now destroyed and she
has 83 views. I know this is totally off topic but I had to share it with someone!

Look at my website: Casey:
0 #17 RickyMew 2019-11-22 12:28
Also visit my blog post;
0 #16 Meri 2019-11-20 02:06
Hi! I've been following your website for a long time now and finally got
the bravery to go ahead and give you a shout out from Dallas Texas!

Just wanted to say keep up the good work!

Feel free to visit my web-site - Meri:
0 #15 Celinda 2019-11-14 18:14
Quality posts is the important to interest the people
to go to see the site, that's what this site is providing.

My web site: Celinda:
0 #14 2019-10-02 00:38
Sweet blog! I found it while searching on Yahoo News. Do you have any suggestions on how
to get listed in Yahoo News? I've been trying for a while but I never seem to get there!
Thank you

Also visit my web-site :: :
0 #13 DouglasSmall 2018-02-01 03:00
I have checked your website and i have found some duplicate content, that's why you
don't rank high in google, but there is a tool that can help you to create 100%
unique articles, search for; Boorfe's tips unlimited content
diabetic supplies
0 #12 diabetic supplies 2017-11-16 08:11
I am really grateful to the owner of this site who has
shared this fantastic piece of writing at at this place.
0 #11 Anemonalove 2017-07-20 08:24
Hi fellas! Who wants to see me live? I'm live at m, we can chat, you can watch me live for free, my nickname is
Anemonalove , here is my pic:
0 #10 Fawn 2015-11-26 03:54
Tout est vraiment bien dis dans cet article, merci aux rédacteurs
Chapeau Paris
0 #9 Chapeau Paris 2015-10-12 01:07
J'ai parcouru ce post et si je peut juste je voudrais vous
recommander certaines choses que vous n'avez pas preciser ou vous apporter quelques précisions

Add comment

Security code