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Table 2 Results of the subjective tests for talking heads by using TNT database. 5 video pairs were shown to 30 viewers. The number of the viewers, which identified the real and synthesized video correctly (NCI), was counted. The correct identifying rate (CIR) for each video pair was calculated.

From: Optimization of an Image-Based Talking Head System

Video pair

1

2

3

4

5

NCI

21

16

17

11

21

NTS

30

30

30

30

30

CIR

70%

53%

57 %

37 %

70%