本文介绍了Matlab中的三和的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我要计算以下总和:
我尝试使用以下代码:
I = imread('C:\Users\Billal\Desktop\image.png'); [x,y,z]=size(I); x=(1:x) ; y=(1:y) ; z=(1:z) ; Fx=ones(size(x)); Fy=ones(size(y)); Fz=ones(size(z)); X=x*Fy'; Y=Fx*y'; Z=z*Fz'; f=I(X,Y,Z); sum1 = sum(f(:)); [x1,y1,z1]=size(I); total = sum1/(x1*y1*z1);但是结果是0.我不知道问题出在哪里?我正在关注本教程.
But the result is 0 . I could not figure out where is the problem ? I am following this tutorial .
www.mathworks/matlabcentral/newsreader/view_thread/126366
请帮助我解决这个问题.
Please help me to solve this question .
推荐答案您可以一步完成此操作:
You can do this in a single step:
result=1/prod(size(I))* sum(I(:));最后,方程式只是将整个图像的值相加.
In the end, the equation just adds up values of the whole image.
您链接到的问题需要对>和y的值求和.不需要,您只需要对索引求和,因此不需要所有这些Fx,Fy内容
The question you link to needs to sum over values of x and y. You don't, you just need to sum over indexes, thus there is no need of all those Fx,Fy things
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Matlab中的三和
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