清空筛选条件
清空筛选条件

How do I prevent my variable from being overwritten?

3 次查看（过去 30 天）
vaishali
vaishali 2013-9-20
编辑： Ashish Uthama 2013-10-14
from binary image like white color banana and background is black .I divided this in three part 20% ,60% and 20%Middle 60% part is used to measure width of banana.I have rows and cols coordinates; for each col (within 60%area) want to find width
[rows, cols] = find(BW == 1);
n1=min(cols); n2=max(cols);
m1=min(rows); m2=max(rows);
column = n1:n2 ;
a=length(column);
b=a*0.2;
n11=round(n1+b);
n22=round(n2-b);
columns = n11:n22 ;
for ii=n11:(n22);
for j=m1:m2
[row1 col]=find(BW(:,ii)==1) ;
x2=max(row1);
x1=min(row1);
d=x2-x1;
end
d1(ii)=d;
end
P=d1;
Desired P should be of size 1 x (length(columns))

请先登录，再回答此问题。

采纳的回答

Image Analyst
Image Analyst 2013-9-20
Your d is getting overwritten at each iteration of the j loop. You need to have d(j) instead of just d. But you actually don't even need it at all to find the first and last white pixel on a line. Just use find() with the 'first' and 'last' option:
for row = n11 : n22
x2 = find(BW(row,:), 1, 'last');
x1 = find(BW(row,:), 1, 'first');
d1(row) = x2 - x1;
end
  10 个评论
显示 8更早的评论
vaishali
vaishali 2013-9-23
sir, file is very useful for me. Thanks for helping me.

请先登录，再进行评论。

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Image Arithmetic 的更多信息

标签

产品

Community Treasure Hunt

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

Start Hunting!

Translated by