what does the L-shaped bracket mean?

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Elysi Cochin 2019-2-16

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评论： Image Analyst 2019-2-17

N1 = N2 = 4
xi = ith pixel of 4 x 4 block

What does the 'L - shaped bracket' mean? How to write code for alpha and beta?

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KALYAN ACHARJYA 2019-2-16

Is this Matlab ralated question?

Check here for different Maths Sysmbols

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Answer 1

Image Analyst 2019-2-16

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https://ww2.mathworks.cn/matlabcentral/answers/445290-what-does-the-l-shaped-bracket-mean#answer_361313

编辑：Image Analyst 2019-2-17

在 MATLAB Online 中打开

Just consider them as regular, normal brackets, or ignore them entirely.

xBar = mean(x(:));
alpha = mean(x(x >= xBar)); % Mean of x where x >= xBar
beta = mean(x(x < xBar)); % Mean of x where x < xBar

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Elysi Cochin 2019-2-17

编辑：Elysi Cochin 2019-2-17

sir what about the variable t

Image Analyst 2019-2-17

t is the number of elements in the block, which is 16 for a 4x4 block, or the number of pixels in the image if you're doing it over the whole image. Like I said, since it's only 4x4 I think it's a sliding window and you'd just use the code I gave you in the other answer and not even use t.

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