清空筛选条件
清空筛选条件

value changes when running each time

2 次查看（过去 30 天）
kash
kash 2013-3-5
x=imread('im9.bmp');
HSV = rgb2hsv(x);
H = HSV(:,:,1); H = H(:);
S = HSV(:,:,2); S = S(:);
V = HSV(:,:,3); V = V(:);
idx = kmeans([H S V], 3,'distance','sqEuclidean');
tabulate(idx)
the percentage for each idx gets changed every time i run the program,whay i am getting like this,kindly assist
  3 个评论
显示 1更早的评论
kash
kash 2013-3-22
I used
idx = kmeans(reshape(HSV, [], 3), 3,'distance','sqEuclidean');
even then i get same error each cluster changes and different color is applied each time
Walter Roberson
Walter Roberson 2013-3-22
kmeans still uses random initialization when you use reshape(), unless you provide the starting centroids like I showed below.

请先登录，再进行评论。

请先登录，再回答此问题。

回答（1 个）

Youssef Khmou
Youssef Khmou 2013-3-5
编辑：Youssef Khmou 2013-3-5
hi kash,
i quote , from Wikipedia : " Commonly used initialization methods are Forgy and Random Partition" so each time you run the code : Random partition is the cause of that small change , so here is what you can do :
you run the code 10 times , each time you store that variable, it is then a R.V calculate its mean and STD , and conclude .
  9 个评论
显示 7更早的评论
Teja Muppirala
Teja Muppirala 2013-3-22
Are you sure you have typed everything correctly?
x = imread('peppers.png');
HSV = rgb2hsv(x);
C=HSV(102:104,102:104);
idx = kmeans(reshape(HSV, [], 3),3,'distance','sqEuclidean','Start',C);
tabulate(idx)
For me, no matter how many times I run this, I always get the same result:
Value Count Percent
1 74013 37.64%
2 99481 50.60%
3 23114 11.76%
kash
kash 2013-3-22
sorry the mistake i made was placed C inside single quotes,thanks

请先登录，再进行评论。

类别

在 Help Center 和 File Exchange 中查找有关 k-Means and k-Medoids Clustering 的更多信息

标签

Community Treasure Hunt

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

Start Hunting!

Translated by