The Multimedia Processing and Communications (MPAC) Lab, led by Professor Homer H. Chen of the Graduate Institute of Communication Engineering (GICE) at National Taiwan University, is engaged in the development of cutting-edge technologies for digital audio/video signal analysis and synthesis, digital video coding, image processing, media streaming, and multimedia systems. Our target applications include digital still camera, digital video camera, LCD display, digital home, P2P content delivery network, IPTV, DTV, video surveillance, and multimedia information retrieval. Our mission is to develop core technology for real-world problems and to give students the world-class engineering training.

• Multimedia Signal Processing
  • Programmable aperture camera
  • Image processing for digital video cameras
    • Auto focus, auto exposure, auto white balance, color interpolation
    • Rolling shutter compensation, lens calibration
    • Video stabilizer
    • Collision detection for moving cars
    • Wii-like pointer
  • Image composition for Web 2.0
  • Music emotion recognition for MIR
  • Visual attention modeling
  • Highlights extraction
  • Piano music transcription
  • Automatic accompaniment generation
• Video Compression
  • Design and optimization of H.265, H.264, MPEG-4, AVS, etc
  • Transcoding
  • Hardware architecture design
  • Perceptual-based video coding
    • Perceptual-based rate control and bit allocation
    • Perceptual-based mode decision
    • Perceptual-based motion estimation
    • Codec-friendliness of perceptual video quality metrics
  • Rate-distortion optimized and quantization
• Multimedia Communications
  • Digital rights management (DRM)
  • Video over wireless, internet, and power line
  • Streaming server design
  • Smooth media play out
  • P2P content delivery

• [Dec. 2012] Tsung-Hsien Tsai received scholarship from 潘文淵文教基金會.
  
• [Nov. 2012] Keng-Sheng Lin won “Third Place Thesis Award” from the Chinese Institute of Electrical Engineering.
  
• [Sept. 2012] Tai-Hsiang Huang and Cheng-Tai Kao received “Top 10% Paper Award” from IEEE International Workshop on Multimedia Signal Processing.
  
• [Jun. 2012] 2012 graduates of our lab.
  
• [Jun. 2012] Keng-Sheng Lin and Po-Yen Su have passed the oral exam.
  
• [Jun. 2012] Lab Gathering at Holiday KTV.
  
• [Jun. 2012] Heather Chen won the first prize of the NTUEE Outstanding Undergraduate Research Award.
  
• [Jun. 2012] Kuang-Tsu Shih has passed the Ph.D. qualifying exam.
  
• [May 2012] Lab Gathering for movie and hot spot.
  
• [May 2012] Prof. Homer H. Chen received 潘文淵文教基金會2012年研究傑出獎.
  
• [Apr. 2012] Prof. Homer H. Chen received 旺宏電子講座.
  
• [Mar. 2012] Cheng-Te Lee and Prof. Homer Chen won the Bronze Medal of the Second Annual Merry Electro-Acoustic Thesis Award (第二屆美律電聲論文獎銅質獎).
  
• [Jan. 2012] Prof. Homer H. Chen received 行政院國家科學委員會(NSC)100年度傑出研究獎.
  
• [Jan. 2012] Yi-Hsuan Yang, Yu-Ching Lin, and Ya-Fan Su won the 2011 IEEE Signal Processing Society Young Author Best Paper Award for the paper coauthored with Homer Chen entitled “A regression approach to music emotion recognition” published in IEEE Trans. Audio, Speech, and Language Processing, vol. 16, no. 2, Feb. 2008.
  
• [Dec. 2011] Prof. Homer H. Chen received IEEE Circuits and Systems Society Distinguished Lecturer, 2012-2013.
  
• [Oct. 2011] Keng-Sheng Lin, Ann Lee, Yi-Hsuan Yang, Cheng-Te Lee, and Homer H. Chen won the Top 10% Paper Award for their paper entitled “Automatic highlights extraction for dram video using music emotion and human face features” presented at the 2011 IEEE International Workshop on Multimedia Signal Processing, Oct. 2011.
  
• [Jun. 2011] News about our emotion-based music retrieval system
  
• [Jun. 2010] 2010 graduates of our lab.
  

  M.S. degree

  B.S. degree

• [May. 2010] Lab Gathering at Brother Hotel.
  
• [Oct. 2009] Our bike trip from 公館 to 深坑.
  
• [Apr. 2009] Homer's birthday party after the group seminar. (click to enlarge)
  
• [Aug. 2008] News about our programmable aperture photography appeared in the Liberty Times
• [Apr. 2008] We won the 2008 IEEE Circuits and Systems Society CSVT Transactions Best Paper Award