Bipin Saha

Research focus

• Multimodal fusion Camera–LiDAR fusion for 3D detection and scene understanding — reimplementing and extending BEVFusion and related methods at the ACCESS Lab.
• Data-efficient perception Self-supervised and unsupervised methods — LiDAR clustering, representation pretraining — that reduce dependence on labeled data for perception in unstructured environments.
• Robust & explainable detection Vehicle detection under adverse weather, complex scenes, and underrepresented regions, with explainable-AI diagnostics and benchmark datasets (BNVD).

• ACCEPTED IEEE QPAIN 2026 paper benchmarking CNN, Transformer, and VLM detectors for complex-scene vehicle detection.
• 52.68% reduction in manual workload from a handwritten-prescription OCR pipeline deployed across 64k+ patients.
• ~98% accuracy in appearance-based eye-gaze estimation across 13 directional targets (IC4ME2 2021).

Selected work below — full list on Google Scholar. Bipin Saha in bold.

Selected

Additional

Research

Graduate Research Assistant — ACCESS Lab, North Carolina A&T State University

Aug 2025 – present · Greensboro, NC

• Implemented unsupervised LiDAR 3D object detection and scene understanding with DBSCAN and K-means + PCA, improving perception in unstructured environments.
• Reimplementing state-of-the-art BEVFusion and self-supervised learning methods as a foundation for advancing camera–LiDAR fusion.

Advisor – Dr. Ali Karimoddini.

Industry

Machine Learning Engineer — Business Automation Limited

Dec 2023 – Feb 2025 · Rajshahi, BD · Full-time

• Digitized handwritten prescriptions with layout segmentation and OCR (CER 0.0951), fine-tuned LLMs for structured output, cut inference to ~2.28 s, and reduced human workload by 52.68% — impacting 64k+ patients.
• Built a Bangla law-consultancy chatbot on Llama-3 with an agentic RAG system and TF-IDF indexing; reduced training memory 3.2× via QLoRA / QDoRA / PEFT; 20% faster inference.
• Developed a multi-agent code-suggestion framework using LangGraph state memory, DeepSeek-R1, and a Milvus index built from GitLab issue text.

Assistant IoT Engineer — Get-Aid Limited

Jan 2023 – Nov 2023 · Dhaka, BD · Full-time

• Led an object-detection system using YOLOv5 / YOLOv8 for 20+ grocery products, reaching mAP50 0.955 and mAP50:95 0.872.
• Deployed production-ready detection and recognition models for diverse retail items.
• Designed a 2R inverse-kinematics robotic arm and tuned PID control for precise slot navigation in a 2D plane.

Undergraduate Research

• Perception & robotics

  3D object detection (LiDAR) · camera–LiDAR / BEV fusion · self-supervised & unsupervised learning · visual navigation · path planning (RRT) · inverse kinematics · PID control · imitation learning

• Vision & ML

  PyTorch · TensorFlow / Keras · scikit-learn · OpenCV · object detection (YOLOv5/v8) · OCR (PaddleOCR, TrOCR) · explainable AI

• LLM / VLM systems

  Fine-tuning (QLoRA, QDoRA, PEFT) · agentic & semantic RAG · LangGraph · Milvus · Llama-3, Mistral, Gemma, DeepSeek-R1

• Datasets & tooling

  Dataset construction & curation (BNVD, FORS-EMG) · reproducible benchmarking · CoppeliaSim · SCAPS-1D · Arduino / embedded C++ · multithreaded real-time pipelines

• Languages

  Python · C++ · Lua

• End-to-End Behavioral Cloning for Self-Driving (Udacity)

  Imitation learning · TensorFlow · PID control

  A CNN maps camera frames directly to steering commands while a PID controller regulates speed; gain tuning yields smooth, stable driving in simulation.

  Stable lane-following and smoother steering after PID gain optimization.

  Project page →

• RRT Path Planning from Scratch

  NumPy · PyGame

  A full Python implementation of the Rapidly-Exploring Random Tree algorithm for 2D planning, visualizing tree expansion and obstacle-aware navigation.

  Collision-aware path construction with interpretable search behavior.

• Slab Bend Detection & Tracking (with Tata Steel)

  YOLO · Tkinter · multithreading

  Real-time industrial monitoring across multi-camera feeds: YOLO inference flags slab-bending anomalies while a GUI logs camera ID, position, timestamps, and confidence with database persistence.

  Reduced operator reaction time via real-time alerts and synchronized multi-camera evidence logging.

• KUKA Robot Object Sorting on a Conveyor

  CoppeliaSim · Lua · inverse kinematics

  A KUKA manipulator sorts objects over a conveyor: color sensors detect items, a gripper picks them, and IK motion planning places them at designated locations.

  Consistent pick-and-place via deterministic motion planning and sensor-triggered logic.

• Handwritten Prescription Digitization

  PaddleOCR · TrOCR · YOLO · Gemma-7B

  Line-by-line layout analysis and OCR extract patient IDs, medication, dosage, frequency, and history from handwritten prescriptions; a generative model converts the text into structured clinical records.

  CER 0.0951, inference ~2.28 s, 52.68% less manual workload across 64k+ patients.

  Project page →

• Appearance-Based Eye Gaze Estimation & Multilingual Keyboard

  scikit-learn · Dlib · Random Forest

  Real-time gaze tracking with standard cameras: active appearance modeling and ensemble classifiers drive a multilingual on-screen keyboard.

  ~98% gaze-direction classification accuracy on a low-cost camera setup.

Also: ChatPDF research assistant with semantic RAG (Gemini-Pro, Llama-3) · text-to-text summarization with Pegasus / Mistral · Bengali sentiment analysis with CNN-BiLSTM (90.31% accuracy) · landmine-detection and disposal robot (Arduino, C++).

• Camera-LiDAR Fusion in Practice: Failure Modes and Design Patterns
• Self-Supervised Perception for Autonomous Driving: A Practical Overview
• Vision-Language Approaches for Vehicle Detection in Complex Scenarios
• From 2D Perception to BEV Fusion: Implementation Roadmap
• How to Build Reproducible Perception Benchmarks for AV Research

Browse all writeups →

Awards

2ndHacatom — Information Center on Nuclear Energy

1st Runner-Up · December 2022 · Dhaka

HMIEEE R10 YP Idea Contest — Mitigate Post-COVID Impact

Honorable Mention · September 2020 · IEEE Bangladesh Section

Service & leadership

Founding Chairperson — IEEE RAS University of Rajshahi SBC

Nov 2020 – Oct 2022

Founded and led the IEEE Robotics and Automation Society Student Branch Chapter, running research and outreach activities in robotics and automation.

Secretary — IEEE University of Rajshahi Student Branch

Jul 2018 – Dec 2020

Secretary and Publicity Coordinator for branch events and international seminars.

Also: IEEE Brand Ambassador (2020–21); Director of Technology & Resource Development, Bangladesh Innovative Education Service (2018–19); science writing for Bigganbortika (2018–19).