When a Screenshot Gets You Caught: How Invisible Watermarks Reveal Leakers

Screenshots may seem harmless, but hidden invisible watermarks can embed employee IDs or timestamps, survive photo captures, and be extracted to trace the source, as demonstrated with real‑world incidents, demo tools, and even Google’s AI SynthID technology.

AI watermarkDCTLSB

0 likes · 10 min read

When a Screenshot Gets You Caught: How Invisible Watermarks Reveal Leakers

IT Services Circle

Jul 7, 2025 · Fundamentals

How an Indian Professor’s DCT Algorithm Revolutionized Digital Media

This article recounts how India’s rise in software outsourcing inspired China, highlights two Indian inventions—USB and the Discrete Cosine Transform (DCT)—and explains how DCT’s breakthrough image compression paved the way for JPEG, MP3, and modern multimedia streaming.

DCTJPEGMultimedia

0 likes · 9 min read

How an Indian Professor’s DCT Algorithm Revolutionized Digital Media

Bilibili Tech

Sep 9, 2022 · Artificial Intelligence

Visual Lossless Deep Learning Pre‑processing for Video Transcoding Using DCT‑Based Low‑Rank Loss and a Lightweight Model

A visual‑lossless deep‑learning pre‑processor that employs a DCT‑based low‑rank loss and an ultra‑lightweight CPU‑friendly model achieves up to 20% bitrate reduction for 1080p videos while preserving high‑frequency details, enabling real‑time transcoding and bandwidth savings for popular content on Bilibili.

AIDCTDeep Learning

0 likes · 11 min read

Visual Lossless Deep Learning Pre‑processing for Video Transcoding Using DCT‑Based Low‑Rank Loss and a Lightweight Model