How to multiply every pixels?
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I need to find the product of every all the pixel values in a matrix. That is, if an image of size 256×256×3 is taken... i need to find the entire product of 65536 values
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Matt J
2018-4-11
There are 196608 values in a 256×256×3 image.
You have many open threads, i.e., answers to your questions that you have not accepted. You are more likely to get responses if you Accept-click the answers that helped you.
Sneha P S
2018-4-11
Sneha P S
2018-4-11
采纳的回答
Rik
2018-4-11
You can use prod.
A=rand(256,256);
total_product=prod(A(:));
But it is very likely that the product will be either 0, inf or -inf, because of the large number of elements.
1 个评论
Matt J
2018-4-12
But it is very likely that the product will be either 0, inf or -inf, because of the large number of elements.
@Sneha, Is the ulterior motive to compute the log-product? If so, better to do this by summation.
logproduct=sum(log(A(:)));
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