Sumohana Channappayya


sumohana at gmail dot com

I graduated in December 2007 with a Ph.D. from the ECE department at The University of Texas at Austin. I was a graduate research assistant at the Laboratory for Image and Video Engineering (LIVE) directed by Prof. Al Bovik. I was co-advised by Prof. Robert W. Heath Jr.

I am currently with PacketVideo Corporation in San Diego, CA.

Research Interests:

  • Structural Distortion Measures of image quality and their applications in the design of image communication systems.
  • Robust image and video transmission over lossy packet networks using Multiple Description Coding (MDC).
  • Natural Scene Statistics (NSS) and its applications in image coding.

    Publications:

    Journal:

  • S. S. Channappayya, A. C. Bovik, C. Caramanis, and R. W. Heath Jr.,"Design of Linear Equalizers Optimized for the Structural Similarity Index," IEEE Trans. on Image Processing, vol. 17, no. 6, pp 857-872, June 2008

  • S. S. Channappayya, A. C. Bovik, and R. W. Heath Jr. ,"Rate Bounds on SSIM Index of Quantized Images," IEEE Trans. on Image Processing, vol.17, no. 9, pp 1624-139, Sep. 2008

    Conference:

  • S. S. Channappayya, A. C. Bovik, and R. W. Heath Jr. ,"Perceptual Soft Thresholding Using the Structural Similarity Index ," to appear in Proc. of IEEE International Conference on Image Processing (ICIP) 2008, San Diego, CA, USA

  • S. S. Channappayya, A. C. Bovik, R. W. Heath Jr., and C. Caramanis, "Rate Bounds on SSIM Index of Quantized Image DCT Coefficients," to appear in Proc. of Data Compression Conference, (DCC) 2008, Snowbird, UT, USA

  • S. S. Channappayya, A. C. Bovik, C. Caramanis, and R. W. Heath Jr. ,"SSIM-Optimal Linear Image Restoration," to appear in Proc. of IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP) 2008, Las Vegas, NV, USA

  • S. S. Channappayya, A. C. Bovik, and R. W. Heath Jr. ,"Design of a Linear Estimator Optimized for the Structural Similarity Index and its Application to Image Denoising," in Proc. of IEEE International Conference on Image Processing (ICIP) 2006, Atlanta, GA, USA

  • S. S. Channappayya, J. Lee, R. W. Heath Jr., and A. C. Bovik, "Frame Based Multiple Description Image Coding in The Wavelet Domain," in Proc. of IEEE International Conference on Image Processing (ICIP) 2005, Genova, Italy

  • S. S. Channappayya, R. W. Heath Jr., and A. C. Bovik, "Multiple Description Image Coding using Natural Scene Statistics," in Proc. of IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP) 2005, Philadelphia, PA, USA

  • S. S. Channappayya, G. P. Abousleman, and L. J. Karam, "Image coding for transmission over multiple noisy channels using punctured convolutional codes and trellis-coded quantization," in Proc. of the IEEE International Conference on Image Processing (ICIP) 2001, Thessaloniki, Greece

  • S. S. Channappayya, G. P. Abousleman, and L. J. Karam, "Coding of digital imagery for transmission over multiple noisy channels," in Proc. of the IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP) 2001 , Salt Lake City, UT, USA

  • S. S. Channappayya, G. P. Abousleman, and L. J. Karam, "Joint Source Channel Coding of Images Using Punctured Convolutional Codes and Trellis-Coded Quantization," in Proc. of IEEE International Symposium on Circuits and Systems, ISCAS 2001, Sydney, Australia

    Other:

    S. S. Channappayya, K. Seshadrinathan, and A. C. Bovik, "Video quality assessment with motion and temporal artifacts considered", EE Times/Video Imaging DesignLine, 12/01/2007.

    Thesis:

    Ph.D. Thesis: "Image Communication System Design Based on the Structural Similarity Index", The University of Texas at Austin, December 2007.

    M.S. Thesis: "Error Resilient Image Coding and Transmission", Arizona State University, December 2000.