Hi, I understand that you are trying to apply “svd” to an image which is producing an error.
As SVD works on only 2D matrices, and your image might have more than 2 channels (such as RGB images that have 3 channels), this could be the reason for the issue you're encountering. To apply SVD to such images, you would need to handle each channel separately or convert the image to a single channel format, like grayscale, before performing SVD.
Here two options available for using “svd” on a RGB image:
1. Convert the image to grayscale to apply SVD on a single matrix.
This can be done using “im2gray” function in MATLAB. Convert the grayscale image to double precision before applying "svd".
a = imread('image_path');
[U,S,V] = svd(gray_a,'econ');
2. To perform SVD on an RGB image, apply SVD separately on each color channel (R, G, and B).
a = imread('image_path');
You can use the below MATLAB documentations for more details.
