QBIX|Systems
AI & ML, Safe Browsing · 2025

Real-Time Person & Content Privacy for Noor Browser

Noor Browser is a safe and halal browser built for families, kids, and mindful users. Powered by lightweight on-device vision models, it blurs or hides persons on images and streaming video in real time, while a secondary model selectively blurs NSFW or sensitive content with ultra-low latency.

80–90 msProcessing Time on Mid-Level CPU
99.5%Real-Time Vision Accuracy Rate
0 KBUser Data Sent to Cloud (100% On-Device)
60 FPSSmooth Video Frame Blurring
01 / Challenge

Bottlenecks & Operational Constraints

Filtering inappropriate imagery and protecting visual privacy in modern web browsers previously required streaming video frames to expensive cloud APIs. This introduced severe privacy risks, high cloud server costs, and unacceptable multi-second latency that broke user web navigation.

02 / Engineering Approach

Architectural Solution & Implementation

We engineered and quantized custom lightweight computer vision models directly compiled to WebAssembly (WASM) and ONNX Runtime. The vision models execute entirely client-side on the user’s local CPU, detecting and blurring human figures and sensitive content in 80–90 milliseconds without transmitting a single byte to external servers.

Key Technical Highlights:

01
Quantized INT8 CNN and MobileNet backbone optimized for local CPU vector instructions.
02
WebAssembly (WASM) memory buffer pipeline eliminating frame duplication overhead.
03
Dynamic frame skip algorithm maintaining responsive 60 FPS page scrolling during heavy media rendering.
04
Dual-stage cascading classification: Stage 1 person localization + Stage 2 NSFW/content verification.
03 / Impact

Measurable Production Outcomes

Zero server cloud compute cost per active user.
Absolute privacy compliance (GDPR / ISO 27001 zero-data-transit guarantees).
Over 99.5% classification accuracy across varied lighting, resolutions, and streaming video.
Technologies Deployed
Python & PyTorchONNX RuntimeWebAssembly (WASM)C++ / RustComputer Vision (OpenCV)Chromium Native Hooks
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