Fig. 9
From: In situ virtual restoration of artifacts by imaging technology
The results of restoration scholars comparing virtual imaging restoration with other methods. a Compared with physical restoration; b compared with digital restoration; c compared with digital projection restoration; d compared with patterns restoration; e compared with AR restoration. + means that virtual imaging restoration is better than the compared method, − means that virtual imaging restoration is worse than the compared method; ○ means that the two methods are equivalent or incomparable