Dr. Fei Wang Profile

Dr. Fei Wang

at Xidian Univ

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SPIE Journal Paper | 9 July 2018

Multiscale super-resolution reconstruction via multibranch prediction and selection network

Wei Wang, Fei Wang, Zhiliang Qiu, Ruizhi Jin

JEI, Vol. 27, Issue 04, 043007, (July 2018) https://doi.org/10.1117/12.10.1117/1.JEI.27.4.043007

KEYWORDS: Data modeling, Super resolution, Convolution, Lawrencium, Feature extraction, Reconstruction algorithms, Networks, Deconvolution, Image segmentation, Convolutional neural networks

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Convolutional neural networks have been recently shown to have the highest accuracy for single-image super-resolution reconstruction. A multibranch prediction and selection network that can gradually reconstruct robust images in multiple scales is proposed. This endeavor is achieved through a network structure with two interacting subnetworks: one is a deep cascaded, multibranch prediction network (DCMBPN) and another is a deep block-selection network (DBSN). In particular, in each cascade, DCMBPN predicts multiple reconstructed images progressively with its special multibranch and cascaded structure. DBSN then adaptively selects the predicted confident blocks from these reconstructed images. Our method does not require traditional interpolation methods to upsample the image as a preprocessing step. It, thus, greatly reduces the computational complexity. We use Euclidean and perception loss functions in each branch to obtain two high-quality reconstructions. In addition, for the cascade structure, our network can achieve reconstructions in different scales, such as 1.5 × , 2 × , 2.5 × , 3 × , 3.5 × , and 4 × . Extensive quantitative and qualitative evaluations on benchmark datasets show that the proposed algorithm performs favorably against the state-of-the-art methods in terms of accuracy and visual improvement.

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