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Chandra Yelleswarapu |
| Research Interests |
| Medical Imaging and image processing; nonlinear optics and applications to power limiting; environmental sensing and diode laser absorption spectroscopy; high power fiber lasers and fiber-optic Bragg grating |
| Current Research Topics |
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At present I am working on projects involving early detection of microcalcifications in screen film as well as digital mammograms for breast cancer diagnostics and optical power limiting for eye and sensor protection from high and low power lasers. I was involved in inventing an image processing technique for digital mammograms to detect radiologists features of interests - microcalcifications, masses and lesions, which led to patent applications through University of Massachusetts Boston. |
| Classes |
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Physics 600: Electronic Instrumentation II: Analog Physics 601: Electronic Instrumentation II: Digital |
Selected Publications |
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Slow light in bacteriorhodopsin solution using
coherent population
oscillations C. S. Yelleswarapu, R. Philip, F. J. Aranda, B. R. Kimball, and D. V. G. L. N. Rao Optics Letters (in press). Review Article: Optical Fourier techniques for medical image processing and phase contrast imaging C. S. Yelleswarapu, S.-R. Kothapalli, and D. V. G. L. N. Rao Optics Communications (in press). Phase contrast imaging using photo-thermally induced phase transitions in liquid crystals C.S. Yelleswarapu, S.-R. Kothapalli, Y. Vaillancourt, F.J. Aranda, B. Kimball and D. V. G. L. N. Rao Applied Physics Letters 89, 2111161-2111163 (2006) All-optical spatial filtering with power limiting materials C.S. Yelleswarapu, P. Wu, S.-R. Kothapalli, D. V. G. L. N. Rao, B. Kimball, S.S. Sai, R. Gowrishankar, and S. Sivaramakrishnan Optics Express 14, 1451-1457 (2006) Spectral phase based medical image processing S.-R. Kothapalli, C.S. Yelleswarapu, S.G. Naraharisetty, P. Wu, and D. V. G. L. N. Rao Academic Radiology 12, 708-721 (2005) Medical image processing using transient Fourier holography in bacteriorhodopsin films S.-R. Kothapalli, P. Wu, C.S. Yelleswarapu and D. V. G. L. N. Rao Applied Physics Letters 85, 5836-5838 (2004) Self-diffraction in bacteriorhodopsin films for low power optical limiting D. N. Rao, C.S. Yelleswarapu, S.-R. Kothapalli, D. V. G. L. N. Rao, and B. Kimball Optics Express 11, 2848-2853 (2003) A simple technique for indirect measurement of absorption line widths in Voigt profile regime C.S. Yelleswarapu and A. Sharma Journal of Quantitative Spectroscopy and Radiative Transfer 72, 733-740 (2002) Enhanced growth rate for Bragg grating fabrication in optical fibers with titania-doped cladding Y. Wang, L. Phillips, C.S. Yelleswarapu, T. George, A. Sharma, S. Burgett and P. Ruffin Optics Communications 163, 185-188 (1999) Laser-induced chlorophyll fluorescence ratio in certain plants exhibiting leaf heliotropism M.V. Sailaja, C.S. Yelleswarapu, D.N. Rao and V. S. Rama Das Australian
Journal of Plant Physiology 24, 159-164
(1997) |