Master branch of AppiumDriver class contains an implementation of IFindsByImage:
#region IFindsByImage Members
public W FindElementByImage(string base64Template) => FindElement(MobileSelector.Image, base64Template);
public IReadOnlyCollection<W> FindElementsByImage(string base64Template) =>
ConvertToExtendedWebElementCollection<W>(FindElements(MobileSelector.Image, base64Template));
#endregion
But beta verions 5.0.0-beta02 has no methods for find element by image.
Will this functionality move to 5.0.0 version?