Data-Hiding Scheme Using Multidirectional Pixel-Value Differencing on Colour Images

<div>Two pairs in two directions. (a) Case 1: minimum value position (0, 0). (b) Case 2: minimum value position (0, 1). (c) Case 3: minimum value position (1, 0). (d) Case 1: minimum value position (1, 1).</div>

Security and Communication Networks

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Figure 2

Figure 2: Data-Hiding Scheme Using Multidirectional Pixel-Value Differencing on Colour Images 