방송과미디어 (Broadcasting and Media Magazine)

한국방송∙미디어공학회 (The Korean Institute of Broadcast and Media Engineers)
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서울대학교 정보신호처리연구실

  • 조남익 (서울대학교 전기정보공학부)
  • 발행 : 2023.04.30
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⟨ 이전 논문 다음 논문 ⟩

초록

본고에서는 서울대학교 정보신호처리연구실, 영문명 ISPL(Intelligent Signal Processing Lab)을 소개하고, 향후 신호처리의 연구 방향을 전망해 본다. ISPL은 1999년 서울대학교 전기공학부에 설치하였고, 지금까지 34명의 박사와 20명의 석사를 배출하였으며, 졸업생들은 현재 삼성전자, LG, 네이버, NCSOFT, SK hynix, 삼성SDS, 한국생산기술연구원, 한국전자기술연구원, KT, SAP, Apple, Meta AI, 한양대, 명지대, 아주대, 숭실대 등으로 진출하여 연구 활동을 하고 있다. 1장에서는 ISPL의 초기부터 현재까지의 연구 분야를 대략 세 단계로 나누어서 소개하고, 2장에서는 딥 러닝과 AI 시대에 신호처리의 역할과 연구 방향을 전망한다.

키워드

참고문헌

  1. Jun Won Choi, and Nam Ik Cho. "Suppression of narrow-band interference in DS-spread spectrum systems using adaptive IIR notch filter." Signal Processing 82.12 (2002): 2003-2013. https://doi.org/10.1016/S0165-1684(02)00385-7
  2. Jun Won Choi et al. "Improved linear soft-input soft-output detection via soft feedback successive interference cancellation." IEEE Transactions on Communications 58.3 (2010): 986-996. https://doi.org/10.1109/TCOMM.2010.03.080469
  3. Jun Won Choi et al. "Low-complexity decoding via reduced dimension maximum-likelihood search." IEEE Transactions on Signal Processing 58.3 (2009): 1780-1793. https://doi.org/10.1109/TSP.2009.2036482
  4. Sang Yoon Park, and Nam Ik Cho. "Fixed-point error analysis of CORDIC processor based on the variance propagation formula." IEEE Transactions on Circuits and Systems I: Regular Papers 51.3 (2004): 573-584. https://doi.org/10.1109/TCSI.2003.820232
  5. Sang Yoon Park et al. "Design of 2K/4K/8K-point FFT processor based on CORDIC algorithm in OFDM receiver." 2001 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing (IEEE Cat. No. 01CH37233). Vol. 2. IEEE, 2001.
  6. Sang Yoon Park, and Nam Ik Cho. "Design of multiplierless lattice QMF: Structure and algorithm development." IEEE Transactions on Circuits and Systems II: Express Briefs 55.2 (2008): 173-177. https://doi.org/10.1109/TCSII.2007.910969
  7. Gibak Kim, and Nam Ik Cho. "Voice activity detection using the phase vector in microphone array." EighthAnnual Conference of the International Speech Communication Association. 2007.
  8. Gibak Kim, and Nam Ik Cho. "Frequency domain multi-channel noise reduction based on the spatial subspace decomposition and noise eigenvalue modification." Speech communication 50.5 (2008): 382-391. https://doi.org/10.1016/j.specom.2007.11.004
  9. Nam Ik Cho, and Sanjit K. Mitra. "Warped discrete cosine transform and its application in image compression." IEEE Transactions on Circuits and Systems for Video Technology 10.8 (2000): 1364-1373. https://doi.org/10.1109/76.889021
  10. Il Koo Kim, Nam Ik Cho, and Sanjit K. Mitra. "Rate-distortion optimization of the image compression algorithm based on the warped discrete cosine transform." Signal processing 83.9 (2003): 1919-1928. https://doi.org/10.1016/S0165-1684(03)00110-5
  11. Il Koo Kim, and Nam Ik Cho. "Error resilient video coding using optimal multiple description of DCT coefficients." Proceedings 2003 International Conference on Image Processing (Cat. No. 03CH37429). Vol. 2. IEEE, 2003.
  12. Hyung Il Koo, Jinho Kim, and Nam Ik Cho. "Composition of a dewarped and enhanced document image from two view images." IEEE Transactions on Image Processing 18.7 (2009): 1551-1562. https://doi.org/10.1109/TIP.2009.2019301
  13. Hyung Il Koo, and Nam Ik Cho. "State estimation in a document image and its application in text block identification and text line extraction." Computer Vision-ECCV 2010: 11th European Conference on Computer Vision, Heraklion, Crete, Greece, September 5-11, 2010, Proceedings, Part II 11. Springer Berlin Heidelberg, 2010.
  14. Kyoung-Ju Park et al. "Method for taking panorama mosaic photograph with a portable terminal." U.S. Patent No. 7,881,559. 1 Feb. 2011.
  15. Beom Su Kim, Sang Hwa Lee, and Nam Ik Cho. "Real-time panorama canvas of natural images." IEEE transactions on consumer electronics 57.4 (2011): 1961-1968. https://doi.org/10.1109/TCE.2011.6131177
  16. Seyun Kim, and Nam Ik Cho. "Hierarchical prediction and context adaptive coding for lossless color image compression." IEEE Transactions on image processing 23.1 (2013): 445-449. https://doi.org/10.1109/TIP.2013.2293428
  17. Seyun Kim, and Nam Ik Cho. "Lossless compression of color filter array images by hierarchical prediction and context modeling." IEEE transactions on circuits and systems for video technology 24.6 (2014): 1040-1046. https://doi.org/10.1109/TCSVT.2014.2302546
  18. Jewoong Ryu, Hyung Il Koo, and Nam Ik Cho. "Language-independent text-line extraction algorithm for handwritten documents." IEEE Signal processing letters 21.9 (2014): 1115-1119. https://doi.org/10.1109/LSP.2014.2325940
  19. Hyung Il Koo, and Nam Ik Cho. "Text-line extraction in handwritten Chinese documents based on an energy minimization framework." IEEE Transactions on Image Processing 21.3 (2011): 1169-1175. https://doi.org/10.1109/TIP.2011.2166972
  20. Jaehyun An, Seong Jong Ha, and Nam Ik Cho. "Probabilistic motion pixel detection for the reduction of ghost artifacts in high dynamic range images from multiple exposures." EURASIP Journal on Image and Video Processing 2014 (2014): 1-15.
  21. Jung Gap Kuk, Nam Ik Cho, and Sang Uk Lee. "High dynamic range (HDR) imaging by gradient domain fusion." 2011 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP). IEEE, 2011.
  22. Bora Jin, Su Jeong You, and Nam Ik Cho. "Bilateral image denoising in the Laplacian subbands." EURASIP Journal on Image and Video Processing 2015 (2015): 1-12. https://doi.org/10.1186/1687-5281-2015-1
  23. Su Jeong You, and Nam Ik Cho. "A new image denoising method based on thewavelet domain nonlocal means filtering." 2011 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP). IEEE, 2011.
  24. Kim, Yoonsik, et al. "Transfer learning from synthetic to real-noise denoising with adaptive instance normalization." Proceedings of the IEEE/CVF conference on computer vision and pattern recognition (CVPR). 2020.
  25. Yeong Il Jang, Yoonsik Kim, and Nam Ik Cho. "Dual path denoising network for real photographic noise." IEEE Signal Processing Letters 27 (2020): 860-864. https://doi.org/10.1109/LSP.2020.2996419
  26. Young Kyun Jang et al. "Deep hash distillation for image retrieval." Computer Vision-ECCV 2022: 17th European Conference, Tel Aviv, Israel, October 23-27, 2022, Proceedings, Part XIV. Cham: Springer Nature Switzerland, 2022.
  27. Jang, Young Kyun, and Nam Ik Cho. "Self-supervised product quantization for deep unsupervised image retrieval." Proceedings of the IEEE/CVF International Conference on Computer Vision (ICCV). 2021.
  28. Haesoo Chung, and Nam Ik Cho. "High dynamic range imaging of dynamic scenes with saturation compensation but without explicit motion compensation." Proceedings of the IEEE/CVF Winter Conference on Applications of Computer Vision. 2022.
  29. Hochang Rhee et al. "LC-FDNet: Learned Lossless Image Compression with Frequency Decomposition Network." Proceedings of the IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR). 2022.
  30. Hochang Rhee et al. "Channel-wise progressive learning for lossless image compression." 2020 IEEE International Conference on Image Processing (ICIP). IEEE, 2020.
  31. Jae Woong Soh, Sunwoo Cho, and Nam Ik Cho. "Meta-transfer learning for zero-shot super-resolution." Proceedings of the IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR). 2020.
  32. Seung Ho Park, Young Su Moon, and Nam Ik Cho. "Perception-Oriented Single Image Super-Resolution using Optimal Objective Estimation." Proceedings of the IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR). 2023.