Conference Papers

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    Contrast Preserving Tone Reproduction for High Dynamic Range Images
    (Institute of Electrical and Electronics Engineers Inc., 2016) Jaiswal, S.; Tripathi, A.K.
    An exact replica of a high dynamic range image which embeds withinit a wide range of luminance values on a standard display device(e.g. LCD monitor) is impossible to achieve without significant lossof information as the display devices are designed to handle verylow range of intensity values compared to the high dynamic rangescene. We propose an algorithm whose output is visually pleasingand preserves maximum information from the input image. In additionto that, proposed method is fast and easy to implement. Proposedalgorithm uses the local and global histogram information of theimage and produces the best tone mapped image. Results verify theefficiency of the algorithm. Proposed algorithm requires noparameter adjustment which makes it useful for any image dataset. © 2016 IEEE.
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    91dB dynamic range 9.5nW low pass filter for bio-medical applications
    (IEEE Computer Society help@computer.org, 2018) Jayaram Reddy, M.K.; Polineni, S.; Laxminidhi, L.
    This paper presents a second order, fully differential, low pass filter. The filter has a tunable bandwidth in the range 4 Hz to 100 Hz and offers a dynamic range of 91 dB. The filter is based on the source-follower biquad operating in the sub-Threshold region. The main idea is to exploit the strengths of sub-Threshold source follower circuit, like low noise, low output impedance, high linearity and low power. The filter design has been validated in UMC 0.18 um CMOS process. The filter consumes only 9.5 nW of power at 1.8 V supply, making it suitable for bio-medical applications. In terms of noise and dynamic range the reported filter is better than previous works found from the literature. © 2018 IEEE.