I want to know at which rows of a gray scale image the intensity values are zeros and want to insert my pixel values in that rows at specific interval

grayscale image

[Ram]

any one suggest for inserting pixels in empty rows

Answer 1

[Walter Roberson]

row_has_some_zero = find( any(YourImage == 0, 2) );
row_is_all_zero = find( all(YourImage == 0, 2) );

[Ram]

nice i got rows at which all pixel value zero but how to insert pixels in these rows at specific interval

[Walter Roberson]

For example with the specific interval 23 and starting at column 17:

YourImage(row_is_all_zero,17:23:end) = 1;

[Ram]

thanks but i need to give different pixel values not smiliar to all rows