Visual Cryptography for Multiple Secrets - Visual Cryptography and Secret Image Sharing - page 69

(a)

I

a 1 1

a 2 1

3

a β

III

II

(b)

I

b 1 1

b 2 1

3

b β

III

II

FIGURE 3.5
Decomposing circle shares A and B into chords, which are further divided into
blocks: (a) A, (b) B.