Provided are an electronic devices and methods for processing an image through a canonical space, the method including receiving training images of a scene obtained from a first sensor, generating first conversion images by converting the training images into images corresponding to a scene obtained through a second sensor, generating second conversion images by converting a color value of the training images and a color value of the first conversion images, and training a canonical image generative model configured to convert the training images, the first conversion images, and the second conversion images into canonical space images of a canonical color space and a canonical illumination space.