अथ / A BEGINNING
Vishal Mahajan portrait
The guy behind the screen01 / 02

Hello, I am

Vishal Mahajan.

A collection of things I've made, things I've figured out, and things I'm still trying to make sense of. The lore is ongoing.

कर्म / Work & ExperienceView all

Backend Developer Intern

The Good Game Theory

Employment
Internship
Dates
May 2025 – July 2025
Location
Remote

Technologies

Node.js · Express.js · MySQL · JavaScript · EJS · Git

Contributions

  • Engineered and deployed RESTful API endpoints with integrated role-based access control (RBAC) and CSRF protection, enabling secure delivery of dynamic content within an MVC architecture.
  • Migrated 17+ interactive EJS dashboards from a legacy PHP backend to Node.js, improving maintainability and establishing a modular, reusable component structure.
  • Optimized backend code by applying DRY principles and collaborating with cross-functional teams through Git-based workflows, reducing integration defects and improving deployment efficiency.
सृजन / ProjectsView all projects

Research & Projects

A collection of my projects, research, Case Comp etc.

Industry ProjectsJul'25 - Jun'26

H-adGen: Framework for Hyperlocalized Personalization of Video Advertisements

A multimodal AI framework that localizes pre-recorded video advertisements by replacing spoken brand and location-specific entities while preserving the original speaker’s voice and visual identity. Integrates speech recognition, zero-shot voice cloning, lip synchronization, facial restoration, and multilingual content moderation to generate regionally tailored advertisements in Hindi, Marathi, Tamil, and Telugu.

Cere Labs logoCere Labs
Research Paper

H-adGen: Framework for Hyperlocalized Personalization of Video Advertisements

A multimodal AI framework that localizes pre-recorded video advertisements by replacing spoken brand and location-specific entities while preserving the original speaker’s voice and visual identity. Integrates speech recognition, zero-shot voice cloning, lip synchronization, facial restoration, and multilingual content moderation to generate regionally tailored advertisements in Hindi, Marathi, Tamil, and Telugu.

Contributions

  • Addressed the scalability and localization challenges of celebrity-led advertising by developing a framework that adapts a single brand campaign for different retailers, locations, and promotional offers.
  • Designed a brand-to-retailer personalization workflow enabling MSMEs to generate localized advertisement variants without requiring a separate video shoot for every variation.
  • Architected a two-stage multimodal AI pipeline integrating 5+ components across speech recognition, voice generation, lip synchronization, facial restoration, and content moderation.
  • Developed spoken-entity personalization capabilities to replace brand names, location references, and promotional offers while preserving the original speaker’s voice identity and synchronized lip movements.
  • Enabled multilingual advertisement localization with support for 22 Indic languages, targeting regionally tailored advertising across diverse linguistic markets.
  • Engineered an evidence-based benchmarking framework using 640 speakers across two language families to evaluate model suitability for multilingual speech applications.

Links

Personal ProjectsJul'25 - Jun'26

AI-Enabled Real-Time Accident Monitoring & Response Coordination System

An AI-powered road accident detection and response coordination system that analyzes CCTV surveillance footage using YOLOv11 to identify vehicle collisions across 8+ accident categories. Integrates low-latency video processing, real-time incident alerts via WebSockets, a FastAPI backend, and a Next.js verification dashboard to streamline incident review and emergency response coordination.

Vishal Mahajan logoPersonal Project
View on GitHub

AI-Enabled Real-Time Accident Monitoring & Response Coordination System

An end-to-end accident monitoring system combining YOLOv11-based computer vision, live CCTV surveillance, real-time event communication, and an incident-verification interface to support faster emergency response.

Contributions

  • Developed a real-time vehicle-collision detection system using YOLOv11 and CCTV surveillance footage to identify road accidents across 8+ accident categories.
  • Optimized the detection workflow to achieve a reported processing cycle of 8 ms per frame, supporting low-latency video analysis.
  • Built a FastAPI backend for accident-detection services and incident event handling.
  • Implemented WebSocket-based real-time alerts to communicate detected incidents to the monitoring interface.
  • Developed a Next.js and TypeScript frontend with a three-stage incident-verification workflow for reviewing and responding to detected accidents.
  • Integrated authentication, PostgreSQL, and Prisma to support application access and persistent data management.

Reported model performance

mAP@50
99%
Reported object-detection performance across the evaluated accident classes.
mAP@50–95
89.3%
Reported mean average precision across stricter IoU thresholds.
Precision
96.8%
Reported proportion of predicted accident detections that were correct.
Recall
96.4%
Reported proportion of ground-truth accident instances detected.

Links

चिन्तन / BlogsView all posts

Thoughts, experiments & things I learned

Writing about technology, projects, and the occasional rabbit hole.

विद्या / Education