Factoring Shape, Pose, and Layout from the 2D Image of a 3D Scene

The goal of this paper is to take a single 2D image of a scene and recover the 3D structure in terms of a small set of factors: a layout representing the enclosing surfaces as well as a set of objects represented in terms of shape and pose. We propose a convolutional neural network-based approach to predict this representation and benchmark it on a large dataset of indoor scenes. Our experiments evaluate a number of practical design questions, demonstrate that we can infer this representation, and quantitatively and qualitatively demonstrate its merits compared to alternate representations.Comment: Project url with code: https://shubhtuls.github.io/factored3

Aerospace Avionics and Allied Technologies

Avionics is a very crucial and important technology, not only for civil/military aircraft but also for missiles, spacecraft, micro air vehicles (MAVs) and unmanned aerial vehicles (UAVs). Even for ground-based vehicles and underwater vehicles (UWVs), avionics is a very important segment of their successful operation and mission accomplishment. The advances in many related and supporting technologies, especially digital electronics, embedded systems, embedded algorithms/software, mobile technology, sensors and instrumentation, computer (network)-communication, and realtime operations and simulation, have given a great impetus to the field of avionics. Here, for the sake of encompassing many other applications as mentioned above, the term is used in an expanded sense: Aerospace Avionics (AA), although it is popularly known as Aviation Electronics (or Avionics). However, use of this technology is not limited to aircraft, and hence, we  can incorporate all the three types-ground, land, and underwater vehicles-under the term avionics.Defence Science Journal, 2011, 61(4), pp.287-288, DOI:http://dx.doi.org/10.14429/dsj.61.112

Polarization Sensitive Optical Coherence Tomography for Blood Glucose Monitoring in Human Subjects

A device based on Polarization sensitive optical coherence tomography is developed to monitor blood glucose levels in human subjects. The device was initially tested with tissue phantom. The measurements with human subjects for various glucose concentration levels are found to be linearly dependent on the degree of circular polarization obtainable from the PS-OCT.Comment: 12 pages, 5 figure

Multi-view Consistency as Supervisory Signal for Learning Shape and Pose Prediction

We present a framework for learning single-view shape and pose prediction without using direct supervision for either. Our approach allows leveraging multi-view observations from unknown poses as supervisory signal during training. Our proposed training setup enforces geometric consistency between the independently predicted shape and pose from two views of the same instance. We consequently learn to predict shape in an emergent canonical (view-agnostic) frame along with a corresponding pose predictor. We show empirical and qualitative results using the ShapeNet dataset and observe encouragingly competitive performance to previous techniques which rely on stronger forms of supervision. We also demonstrate the applicability of our framework in a realistic setting which is beyond the scope of existing techniques: using a training dataset comprised of online product images where the underlying shape and pose are unknown.Comment: Project url with code: https://shubhtuls.github.io/mvcSnP

Association of low serum vitamin D level among pulmonary tuberculosis patients

Background: Recent studies suggest that the incidence and severity of tuberculosis is associated with low levels of Vitamin D, this is especially important in developing countries like India which carries a major portion of global Tuberculosis burden. Therefore, this study aimed to determine the prevalence of Vitamin D deficiency in newly diagnosed tuberculosis patients in our institute. Aims and objective is to study the deficiency of Vitamin D In newly diagnosed sputum positive pulmonary TB and to compare the level of Vitamin d with that of age matched healthy control population.Methods: This was a descriptive cross-sectional case control study to asses Vitamin D deficiency among 140 cases which included 2 categories of patients (a) Group 1: 70 sputum AFB positive newly diagnosed pulmonary TB patients, (b) Group 2: 70 apparently healthy people who came to the hospital with regular checkup.Results: Mean age of study groups and control in years were, Control: 40.3857±10.231, Cases: 36.885±11.076. Mean BMI was significantly higher in controls when compared with new TB cases (19.27±2.455 vs 15.215±1.774) kg/m2 p <0.05).There was significant decrease in mean Vitamin D3 value when new cases TB patients were compared with controls (18.212±9.3027 vs 36.1267±8.410 p <0.05).Conclusions: Patients with tuberculosis are significantly Vitamin D deficient as compared to normal people. This deficiency is more marked in females and those with low BMI. The present finding favours the role of Vitamin D in the prevention and treatment of tuberculosis in developing countries like India

Reconstructing an ancestral genotype of two hexachlorocyclohexane-degrading Sphingobium species using metagenomic sequence data.

Over the last 60 years, the use of hexachlorocyclohexane (HCH) as a pesticide has resulted in the production of &gt;4 million tons of HCH waste, which has been dumped in open sinks across the globe. Here, the combination of the genomes of two genetic subspecies (Sphingobium japonicum UT26 and Sphingobium indicum B90A; isolated from two discrete geographical locations, Japan and India, respectively) capable of degrading HCH, with metagenomic data from an HCH dumpsite (∼450 mg HCH per g soil), enabled the reconstruction and validation of the last-common ancestor (LCA) genotype. Mapping the LCA genotype (3128 genes) to the subspecies genomes demonstrated that &gt;20% of the genes in each subspecies were absent in the LCA. This includes two enzymes from the 'upper' HCH degradation pathway, suggesting that the ancestor was unable to degrade HCH isomers, but descendants acquired lin genes by transposon-mediated lateral gene transfer. In addition, anthranilate and homogentisate degradation traits were found to be strain (selectively retained only by UT26) and environment (absent in the LCA and subspecies, but prevalent in the metagenome) specific, respectively. One draft secondary chromosome, two near complete plasmids and eight complete lin transposons were assembled from the metagenomic DNA. Collectively, these results reinforce the elastic nature of the genus Sphingobium, and describe the evolutionary acquisition mechanism of a xenobiotic degradation phenotype in response to environmental pollution. This also demonstrates for the first time the use of metagenomic data in ancestral genotype reconstruction, highlighting its potential to provide significant insight into the development of such phenotypes

Solar Air Heater Performance enhancement using Perforated Plates: An Experimental Study

In present study solar air heater duct performance is enhanced using perforated plate structure in it. In this study, simple rectangular array design is investigated experimentally and compared with simple solar air heater duct. Design is installed in two parallel installation combinations. Experimental setup has been fabricated to investigate the effects. Effect on Heat transfer has been investigated for 4 different mass flow rates. Arrangement has been tested for Mass Flow Rates of 0.05, 0.065, 0.08 and 0.095(all in kg/s) It was found that due to Presence of Perforated Plates, heat transfer enhanced up to 3.3 times in comparison to smooth ducts