regarding masking the image

kindly expalin the following line

mask_h and mask_w are the scalar inputs

mask = zeros(mask_h,mask_w);
mask(1:mask_h/2,:) = -1;
mask(mask_h/2 + 1:end,:) = 1;

Answer 1

[waqas]

First line is defining a zero matrix With mask_h rows and mask_w columns.

In the second line, all the entries in first half of the rows are being assigned a value of -1.

For third line, rest of the rows, i.e., all the entries from half of the rows till the end are assigned a value of 1.

You are using Matlab indexing to assign values of 1 or -1 to the entries based on their location in the matrix.

[Rd]

Thanks a lot.

[waqas]

My pleasure. If your query is resolved then I would suggest to accept the answer.