Decorrelation Stretch

Hold

Techniques

An image-processing technique that expands color differences to make subtle details easier to see.

Why it's here

Placed in Hold: 1 article(s) of evidence from 1 source(s), led by research-stage coverage, with 0 in the last 30 days. Confidence 24%. Low accumulated evidence, so it defaults conservatively pending more signal.

Evidence (1)

4Hacker News·9/10/2026research
NASA Image Technique Helps Reveal Ancient Cambodian Art
A color-enhancement method called decorrelation stretch, originally developed at NASA’s Jet Propulsion Laboratory for satellite imagery, has been adapted to reveal faded paintings and rock art at sites such as Angkor Wat. The technique became widely used in archaeology after Jon Harman turned the method into the Dstretch plugin and mobile apps for image analysis.