cv
General Information
Full Name | Ajay Narasimha Mopidevi |
ajaynmopidevi@gmail.com |
Education
- 2022 - 2024
Masters of Science in Computer Science (CGPA - 4.0 / 4.0)
University of Colorado Boulder
- 2013 - 2017
Bachelors of Technology in Electronics and Communication Engineering
Indian Institute of Technology (IIT) Guwahati, India
Publications
-
CryoSegment Simultaneous Segmentation of diverse cellualr structures from Cryo-ET images (under review for Nature Methods)
Skills
Language | Python, C/C++, Matlab |
Machine Learning Frameworks | Pytorch, Tensorflow, Keras |
Libraries | OpenCV, ROS, Open3D, pcl, pandas, NumPy, scikit-learn, scipy, Matplotlib, CUDA |
Tools | Google Cloud Platform, AWS, Docker, Kubernetes, Git, Visual Studio, PyCharm, Eclipse, IntelliJ, Meshlab, CloudCompare |
Experience
- Apr 2023 - Present
Research Assistant
Vignesh Kasinath Lab
- Designed end-to-end pipeline for semantic segmentation of low resolution and sparse cellular structures from cyro electron tomography images using Multi-UNet architecture, resulting in a significant 13% boost in F1-score
- Developed a 2-stage semi-supervised segmentation framework to segment cellular regions and fine-grained cellular structures, reducing the number of manual annotations by 85%
- Developed unsupervised algorithms to effectively segment different instances of chromosomes in a nucleus
- Designed advanced image processing pipelines for precise 3D pose extraction of cellualr structures from volumetric microscopic imaging data, leveraging connected components, spline interpolation, and geometric transformations
- Integrated fine-tuned Segment Anything Model (SAM) in the pipeline, eliminating manual parameter tuning and enhancing the performance of the segmentation masks by 20%
- Sep 2022 - May 2024
Research Assistant
Autonomous Robotics and Perception Group
- Developed RMap, a volumetric mapping framework that transforms sparse radar pointclouds to high resolution 3D lidar-like maps, achieving a significant improvement in F1-score 0.59 compared to 0.19 of traditional radar maps
- Designed UpPoinTr transformer for enhancing volumetric maps, surpassing the prior models by 8% in F1-score
- Developed the pose-based region sampling algorithm to efficiently represent the 3D maps as minimal partial pointclouds, without any loss in details
- Developed custom CUDA pointcloud loss metrics to evaluate deviations from groundtruth in all three dimensions
- Enhanced the odometry estimation by 8% using only the mmWave radar, by extracting the features from 3D radar images using transformer encoder to predict a 6DoF pose
- Jul 2020 - Jul 2022
Computer Vision Research Engineer
Samsung Semiconductord India R&D
- Developed real-time 3D scene reconstruction algorithm, only using depth from ToF sensors, optimized to 20fps
- Improved the accuracy by 5% of the reconstructed scene by removing outliers using gaussian smoothing
- Automated pose alignment of reconstructed 3D scene with groundtruth, eliminating manual alignment in MeshLab
- Reduced the latency of Remosaic deep learning models for 200M pixel camera sensor using quantization and pruning techniques by 10% with an unnoticeable degradation of 0.1% in perceptual quality
- Optimized Samsung CMOS camera sensor noise reduction algorithm with OpenMP parallel programming, thereby reducing the algorithm runtime by 33%
- Aug 2017 - Jun 2020
Software Engineer
Qualcomm
- Spearheaded the development and maintenance of python audio library to evaluate both the objective and perceptual audio quality of Bluetooth headsets
- Enhanced python automated test framework with new features that populate test vectors and visualize audio output signals, leading to a 10%-15% reduction in both the validation and developments efforts
- May 2017 - Jul 2017
Research Intern
Eagle Eye Networks
- Predicted the pedestrian/car trajectory in a video by estimating the optical flow for the YOLO precited objects
- Achieved 72% accuracy in segmenting location and trajectory anomalies through Incremental Spherical Clustering
Awards
- 2022
- Received Employer of the Month at Samsung, for successfully optimizing the noise reduction algorithm to reduce runtime by 33%
- 2020
- Received the Spot Appreciation award, for exceptional performance in delivering the 3D reconstruction pipeline for Samsung's ToF sensors
- 2019
- Received Qualstar from Qualcomm for continued excellence in improving the audio quality analysis framework
Courses
-
- Advanced Topics in Computer Vision
- Deep Reinforcement Learning
- Natural Language Processing
- Advanced Topics in Machine Learning
- Datacenter Scale Computing
- Big Data Architecture
- Advanced Robotics
- Computer Vision
- Computational Photography
- Computer Graphics
- Sensor Fusion