how to get the (x,y) coordinate values of points touching bounding box

3 ビュー (過去 30 日間)
Elysi Cochin
Elysi Cochin 2018 年 3 月 22 日
編集済み: Elysi Cochin 2018 年 3 月 22 日
I have a binary object
How can i get the (x,y) co-ordinate value of the points touching the bounding box.

採用された回答

KSSV
KSSV 2018 年 3 月 22 日
I = imread('16.png') ;
[m,n] = size(I) ;
[y,x] = find(I) ;
% GEt mean
mx = mean(x) ; my = mean(y) ;
% Line 1
L1 = [repmat(mx,m,1) (1:m)'] ;
L2 = [(1:n)' repmat(my,n,1) ] ;
P = [L1(1,1) L1(1,2) ; L1(end,1) L1(end,2) ;L2(1,1) L2(1,2) ; L2(end,1) L2(end,2) ] ;
idx = knnsearch([x y],P) ;
imshow(I) ;
hold on
plot(x(idx),y(idx),'*r')

その他の回答 (1 件)

Stalin Samuel
Stalin Samuel 2018 年 3 月 22 日
編集済み: Stalin Samuel 2018 年 3 月 22 日
Let us assume that, you have the image(from bounding box) in variable "Elysi". Then you can get the co-ordinate values using below code
[x1 y1]=find( Elysi(1,:)==1)
[x2 y2]=find( Elysi(:,end)==1)
[x3 y3]=find( Elysi(end,:)==1)
[x4 y4]=find( Elysi(:,1)==1)

Community Treasure Hunt

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

Start Hunting!

Translated by