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Inserting NaN's into the Image with data of type single

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Sai Prakash Reddy Konda
评论： Walter Roberson 2018-11-16
Hi,
I have an image of size 256 X 256(total number of elements in the image are: 65536). How can insert NaNs into the image alternatively?. That is, every second entry of the image should contain a NaN. Such that no two adjacent pixels should have NaNs.
Kindly help me in this issue.
Thanks in advance..

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Image Analyst
Image Analyst 2018-11-9
Try this:
grayImage = single(imread('cameraman.tif'));
[rows, columns, numColors] = size(grayImage)
mask = checkerboard(1, floor(rows/2), floor(columns/2)) == 0;
grayImage(mask) = nan;
imshow(grayImage, [])
  2 个评论
Walter Roberson
Walter Roberson 2018-11-16
grayImage(1:2:end,1:2:end) = nan;
grayImage(2:2:end,2:2:end) = nan;
no function calls needed . This does assume that grayImage is floating point datatype.

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