“…This will cause limited receptive fields. In the contribution by Zhang et al, “Image super‐resolution with parallel convolution attention network,” the authors propose a parallel convolution attention network (PCAN) to extract features in an effective way 9 . Specifically, a pair of parallel convolutions (PCs) with different kernel sizes is used in one layer in their network, which can extract features within different receptive fields, thereby making full use of the multiscale information.…”