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Table 3 Number of images needed when the same information is hidden

From: A video coverless information hiding algorithm based on semantic segmentation

Length of hidden data

1 B

10 B

100 B

1 KB

Pixel method [3]

1

10

100

1024

Zhou’s method [6]

2

6

46

457

Zheng’s method [13]

1

5

50

512

GIF method [11]

1 ∼2

6 ∼11

58 ∼115

586 ∼1171

Zhang’s method [15]

2 ∼9

7 ∼81

55 ∼801

548 ∼8193

Proposed method

1

10

100

1024