Build an Undo & Redo by making a 'state snapshot'

I would like to build a Undo&Redo class for a image editor, without building the entire command pattern.

Actually in my code, I'm using the MVC pattern, and so I got a bunch of attributes that are updated every times I launch an action:

    class model{
    ...code...

public:
        bool is_Flipped_V = false;
        bool is_Flipped_H = false;
        bool is_Rotated = false;
        bool is_Blurred = false;
        bool is_Sharpened = false;
        bool is_Grayscale = false;
        bool is_Sepia = false;
        bool is_Loaded = false;
        bool is_Saved = false;


        int exposure_Val;
        double contrast_Val;
        int red_Val;
        int green_Val;
        int blue_Val;

        int hue_Val;
        int saturation_Val;
        int luminance_Val;

        int angle_Val;
    }

my idea would be to create a list, that every time the Observer is notified, it records the actual state of all the upper attributes. So that, when I want to 'undo' something, I can just re-update my image, by passing the previous attributes states.

Have someone ever done something like? How Can I save the states of the attributes in a list? Is there a different but better way to implement that?