Use BackstopJS as a comparison tool

Hi! I was wondering if it was possible to use BackstopJS as a comparison tool? For example, can I provide the **reference** and **test** screen shots without using BackstopJS's rendering or interaction functionality?

For example: I'm testing my React and React Native components in isolation with Storybook. I use services like SauceLabs via WebdriverIO and Appium to render and interact with my components. I can also use the same tools to capture screen shots. Is it then possible to feed those captured screen shots to BackstopJS and skip rendering and interacting?

Thanks!