Qingling Sun

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Currently, radiologists mainly use their eyes to discern cancer when they screen the mammograms. However, in many cases, cancer is not easily detected by the eyes because of bad imaging conditions. In order to improve the diagnostic rate of cancer, image enhancement technology is often used to enhance the image and aid the radiologists. In this paper, we(More)
dm do, %a dm dol do5 606 dm dl0 $1 " 12 dl3 dl4 " 3 d16 dl7 dm d21 drz d~ du dz d?s dn d,a 5, d32 d,, dw 5 5 d36 d37 c d,, d u d u d u dl5 c d. 7 dsa d5l drz ds3 dw dsr dJs 5 7 d m ds, d e d o df4 dsr dss d m Abstract-In this paper a new algorithm is presented for image enhancement in the discrete cosine transform (DCT) domain. The algorithm is based on a(More)
Photoluminescence (PL) is a nondestructive and powerful method to investigate carrier recombination and transport characteristics in semiconductor materials. In this study, the temperature dependences of photoluminescence of GaAs-AlxGa1-xAs multi-quantum wells samples with and without p-n junction were measured under both resonant and non-resonant(More)
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