Research Article

A Steganographic Method Based on Pixel-Value Differencing and the Perfect Square Number

Table 1

The quantization range table based on the perfect square number.

RangeSub-ranges

1 1
2 2
3 3
2
4 3
5 4
3
6 4
3
7 4
3
8 4
9 5
4
10 5
4
11 5
4
12 5
4
13 5
4
14 5
4
15 5
4
16 4

is the perfect square number; is the length of embedding bits.