Table 2 HDR image multi-bit watermarking: state of the art

Cheng et al. [14]

RGBe

LSB

7

\(\thicksim \) 10 bpp

PSNR on LDR

N/A

N/A

(1 TMO) \(\thicksim \) 30 dB

PSNR on LDR

Li et al. [15]

LogLuv

LSB

10

\(\thicksim \) 26 bpp

(1 TMO) \(\thicksim \) 35 dB

N/A

N/A

HDR-VDP\(_{75} \thicksim 0.42\,\%\)

HDR-VDP\(_{95} \thicksim 0.04\,\%\)

Yu et al. [16]

RGBe

Pixel

125

\(\thicksim \) 0.12 bpp

N/A

N/A

exponent

N/A

Rattanacharuchinda

Blue comp. of

Multiplicative

5^a

1 bpp

PSNR \(\thicksim \) 60 db

N/A

et al. [17]

detail layer

4 TMO BER \(\thicksim \) 5 %

Wu et al. [18]

DCT

Modify

4^a

PSNR on LDR

HDR crop BER \(\thicksim \) 12 %

adjacent

0.015 bpp

(4 TMO) [40,70] dB

HDR blur BER \(\thicksim \) 22 %

DCT coeff.

HDR noise BER \(\thicksim \) 15 %

Solachidis et al. [19]

JND

Multiplicative

3^b

128

HDR-VDP-2 \(\thicksim 1\,\%\)

7 TMOs

wavelet

(1 TMO) \(\thicksim \) 30 dB

EER <10⁻³% BER \(\thicksim \) 5 %