Robust Video Hashing Based on Multidimensional Scaling and Ordinal Measures

Table 2

Settings of eleven operations.

Operation	Parameter	Value	Number
Brightness adjustment	Photoshop’s scale	−20, −15,−10, −5, 5, 10,15, 20	8
Contrast adjustment	Photoshop’s scale	−20, −10, 10, 20	4
3 × 3 Gaussian low-pass filtering	Standard deviation	0.1, 0.2, …, 1	10
Salt and pepper noise	Density	0.001, 0.002, …, 0.01	10
AWGN	Signal noise ratio	1, 2, 3, 4, 5, 6	6
MPEG-2 compression	Kilobit per second	100,200, …, 1000	10
MPEG-4 compression	Compression quality	10,20, …, 100	10
Random frame dropping	Frame number	1, 2, 5, 10, 15, 20	6
Random frame insertion	Frame number	1, 2, 5, 10, 15, 20	6
Frame scaling	Ratio	0.8, 0.85, 0.9, …, 1.2	8
Frame rotation	Angle (degree)	−1, −0.5, 0.5, 1	4
Total			82