Perceptual quality improvement for synthesis imaging of Chinese spectral radioheliograph

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Abstract

Chinese Spectral Radioheliography can generate the images of the Sun with good spatial resolutions. It employs the Aperture Synthesis principle to image the Sun with plentiful solar radio activities. However, due to the limitation of the hardware, specifically the limited number of antennas, the recorded signal is extremely sparse in practice, which results in unsatisfied solar radio image quality. In this paper, we study the image reconstruction of Chinese Spectral RadioHeliograph (CSRH) by the aid of compressed sensing (CS) technique. In our proposed method, we adopt dictionary technique to represent solar radio images sparsely. The experimental results indicate that the proposed algorithm contributes both PSNR and subjective image quality improvements of synthesis imaging of CSRH markedly.

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Xu, L., Ma, L., Chen, Z., Yan, Y., & Wu, J. (2015). Perceptual quality improvement for synthesis imaging of Chinese spectral radioheliograph. In Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) (Vol. 9315, pp. 94–105). Springer Verlag. https://doi.org/10.1007/978-3-319-24078-7_10

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