Fig. 13From: A photoacoustic imaging reconstruction method based on directional total variation with adaptive directivityThe first to second rows refer to the reconstructed results of the noise-added Shepp–Logan images from the TV (a–d) and the DDTV (e–h), respectively. The SNR of the signals are 10 dB (a, e), 5 dB (b, f), 3 dB (c, g), and 0 dB (d, h)Back to article page