Computing, IT & AI
Digital video compression and HDTV
1970s-1990s CEArun N. Netravali (Bell Labs)Netravali & Robbins, motion-compensated television coding (1979)Diaspora (work abroad)
1972
Methods for compressing digital video by coding only what changes between frames; led the HDTV work at Bell Labs.
- Dated
- 1972–1995
- As scholars put it
- 1970s-1990s CE
- Originator
- Arun N. Netravali (Bell Labs)
- Source text
- Netravali & Robbins, motion-compensated television coding (1979)
- Region
- Diaspora (work abroad)
- Discipline
- Computing, IT & AI
- Evidence
- Documented
- Confidence
- High
- Verification
- Verified-web
Background
Arun Netravali, an IIT Bombay graduate, joined Bell Labs in 1972. With colleagues he developed motion-compensated prediction, which estimates how parts of a picture move between frames and sends only the difference. He later led Bell Labs' high-definition television work and became the laboratory's president.
Significance
Motion compensation is at the core of the MPEG and H.26x video standards. Netravali received the US National Medal of Technology, the Marconi Prize and the Padma Bhushan.
Fair to say
Digital video compression was built by many groups; Netravali is one of its recognised pioneers.
Path to modern innovation
Every streamed or broadcast video uses motion-compensated compression.
Global impact
- Video streaming, digital TV and video calls.
References
- 2Motion-compensated television coding: Part I
Further reading
Corrections and additional sources: edit IND-388 on GitHub.