What does this refers to?

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Sabarinathan Vadivelu
Sabarinathan Vadivelu il 20 Set 2012
What does this symbol refers to? How it will be implemented? L(i,j), be an image.
|L(i,j)|||

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Jan
Jan il 20 Set 2012
The double bars mean the norm. If L(i,j) is "an image", this norm is not uniquely defined and the meaning should be explained anywhere in the surrounding text.

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Wayne King
Wayne King il 20 Set 2012
That is the norm. It is implemented in MATLAB with norm()
Without additional information, it is not clear which norm represents, i.e. the 2-norm, the 1-norm etc.

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