Reversible Data Hiding Scheme with High Embedding Capacity Using Semi-Indicator-Free Strategy

Table 2

The ranges and symbols of tiny-value, middle-value, and large-value indices.

Indices	Range	Symbol
Tiny-value indices	0~2^𝑁𝑧−3	𝐸𝑖
Middle-value indices	0+2^𝑁𝑧− 2~2^𝑁𝑐−1+2^𝑁𝑧−2	𝐺𝑖
Large-value indices	2^𝑁𝑐+2^𝑁𝑧− 2~cs −1	𝑂𝑖