Now showing items 1-8 of 8

    • CS-ToF: High-resolution compressive time-of-flight imaging 

      Li, Fengqiang; Chen, Huaijin; Pediredla, Adithya; Yeh, Chiakai; He, Kuan; Veeraraghavan, Ashok; Cossairt, Oliver (2017)
      Three-dimensional imaging using Time-of-flight (ToF) sensors is rapidly gaining widespread adoption in many applications due to their cost effectiveness, simplicity, and compact size. However, the current generation of ToF ...
    • Deep imaging in scattering media with selective plane illumination microscopy 

      Pediredla, Adithya Kumar; Zhang, Shizheng; Avants, Ben; Ye, Fan; Nagayama, Shin; Chen, Ziying; Kemere, Caleb; Robinson, Jacob T.; Veeraraghavan, Ashok (2016)
      In most biological tissues, light scattering due to small differences in refractive index limits the depth of optical imaging systems. Two-photon microscopy (2PM), which significantly reduces the scattering of the excitation ...
    • DistancePPG: Robust non-contact vital signs monitoring using a camera 

      Kumar, Mayank; Veeraraghavan, Ashok; Sabharwal, Ashutosh (2015)
      Vital signs such as pulse rate and breathing rate are currently measured using contact probes. But, non-contact methods for measuring vital signs are desirable both in hospital settings (e.g. in NICU) and for ubiquitous ...
    • Exploring the effect of food intake and physical activity on body weight 

      Prioleau, Temiloluwa; Heng, Yuqiang; Veeraraghavan, Ashok; Sabharwal, Ashutosh (2017)
      Body weight is an important measurement parameter towards management of obesity, diabetes and overall health. Previous research and society at large has primarily focused on long-term fluctuation in body weight to describe ...
    • Integrated light-sheet illumination using metallic slit microlenses 

      Ye, Fan; Avants, Benjamin W.; Veeraraghavan, Ashok; Robinson, Jacob T. (2018)
      Light sheet microscopy (LSM) - also known as selective plane illumination microscopy (SPIM) - enables high-speed, volumetric imaging by illuminating a two-dimensional cross-section of a specimen. Typically, this light sheet ...
    • Reconstructing rooms using photon echoes: A plane based model and reconstruction algorithm for looking around the corner 

      Pediredla, Adithya Kumar; Buttafava, Mauro; Tosi, Alberto; Cossairt, Oliver; Veeraraghavan, Ashok (2017)
      Can we reconstruct the entire internal shape of a room if all we can directly observe is a small portion of one internal wall, presumably through a window in the room? While conventional wisdom may indicate that this is ...
    • SAVI: Synthetic apertures for long-range, subdiffraction-limited visible imaging using Fourier ptychography 

      Holloway, Jason; Wu, Yicheng; Sharma, Manoj K.; Cossairt, Oliver; Veeraraghavan, Ashok (2017)
      Synthetic aperture radar is a well-known technique for improving resolution in radio imaging. Extending these synthetic aperture techniques to the visible light domain is not straightforward because optical receivers cannot ...
    • Single-frame 3D fluorescence microscopy with ultraminiature lensless FlatScope 

      Adams, Jesse K.; Boominathan, Vivek; Avants, Benjamin W.; Vercosa, Daniel G.; Ye, Fan; Baraniuk, Richard G.; Robinson, Jacob T.; Veeraraghavan, Ashok (2017)
      Modern biology increasingly relies on fluorescence microscopy, which is driving demand for smaller, lighter, and cheaper microscopes. However, traditional microscope architectures suffer from a fundamental trade-off: As ...