??? Error using ==> plus Integers can only be combined with integers of the same class, or scalar doubles

问题

When i'm trying to add pixel data to data created by gaussian randn() function it's spitting the error

??? Error using ==> plus Integers can only be combined with integers of the same class, or scalar doubles.

This is my code:

im = imread( 'ngc6543a.jpg' );   % matlab example image
x  = randn( size (im) );         % create gaussian distributed values
t  = im + x;                     % add them together, this throws the error

回答1:

Convert the integers (uint8) from your read image im to double:

t = double(im) + x;

来源：https://stackoverflow.com/questions/33300588/error-using-plus-integers-can-only-be-combined-with-integers-of-the-same