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Find mid position value

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Sajid Rahim
Sajid Rahim 2017-9-20
回答： KSSV 2017-9-21
Plz help me
How i find the mid position in x y values.
this is my code
clear all;
[filename pathname]=uigetfile('*.jpg;*.png;*.tif;*.tiff;*.gif;*.bmp;');
inputimage=imread([pathname filename]);
I=inputimage;
% I = imread('5.png') ;
I = rgb2gray(I) ;
[y,x] = find(I) ;
figure
imshow(I)
hold on
plot(x,y,'.b')
% x
% y
% z=(y+x)/2
% plot(z,'.r')
plot(x(1),y(1),'*y')
plot(x(end),y(end),'*y')
%
line([x(1),0],[y(1), 0])
line([x(end),0],[y(end), 0])
figure(1);line([0 1],[0 1]);
  2 个评论
Rik
Rik 2017-9-20
What do you mean with midpoint? There are several options of what you could mean.
Also, use the {}Code button for proper markup of your code. It vastly increases the readability of your question, increasing the chance that someone is going to read it.
KSSV
KSSV 2017-9-20
You need to find the coordinates of full blue line and then find the mid point....this is the second time you posed the same question. Attach your original image with only blue line.

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KSSV
KSSV 2017-9-21
Let 2.png be your image.
I = imread('2.png') ;
I = rgb2gray(I) ;
[y,x] = find(I) ;
% Mid position
mpx = mean(x) ;
mpy = mean(y) ;
imshow(I) ;
hold on
plot(mpx,mpy,'*b')

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