MATLAB Answers

Delete part of an image

조회 수: 19(최근 30일)
Alejandro Fernández
Alejandro Fernández 2020년 1월 16일
댓글: Alejandro Fernández 2020년 1월 16일
Hi, explain below what I want to do to see if anyone would know how to fix it.
I start with an image like the following:
IMG_0251.JPG
Now I make two circles, one with a smaller radius than the other, of which I know both its center and radius. They're not concentric but they never intersect
IMG_0253.PNG
And finally what I want to achieve is that all the points that are outside the major circle as well as inside the minor circle become black
IMG_0254.PNG

채택된 답변

Matt J
Matt J 2020년 1월 16일
편집: Matt J 2020년 1월 16일
[m,n]=size(oldImage);
x=(1:n);
y=(1:m).';
mask = (x-innerCenterX).^2+(y-innerCenterY).^2>=innerRadius^2 & ...
(x-outerCenterX).^2+(y-outerCenterY).^2<=outerRadius^2 ;
newImage=oldImage.*mask;
  댓글 수: 3
Alejandro Fernández
Alejandro Fernández 2020년 1월 16일
Thank you so much, it works!

댓글을 달려면 로그인하십시오.

추가 답변(0개)

제품


릴리스

R2019b

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by