a quick glimpse of Ryu is shown. It's a blink and you miss it moment. the statue might likey be a statue of Rajin , and the image that appears on Akuma might be a image of Fujin from Japanese folklore ( Yeah, I might be wrong on this)
The quick glimpse Ryu symbolize the difference between Akuma and Ryu when it comes to martial arts philosophies and paths. Contrast to Akuma, Ryu is like a calm breeze while Akuma is like a raging storm.