Tone mapping
Videos
Tone mapping is a technique used in image processing and computer graphics to map one set of colors to another to approximate the appearance of high-dynamic-range images in a medium that has a more li
Tone mapped high-dynamic-range (HDR) image of St. Kentigerns Roman Catholic Church in Blackpool, Lancashire, England, UK
Tone mapped HDR image of Sankofa Square; Tone mapping was done as post-processing technique, using Photomatix photographic software.
Tone mapped high dynamic range image example showing stained glass windows in south alcove of Old St Paul's, Wellington, New Zealand
The six individual exposures used to create the previous image. In the low exposure images, the room is dark and unclear, but the details of the windows are visible. In the high exposure images, the windows are bright and unclear, but the details of the room are revealed.
Unsharp masking
Videos
Unsharp masking is an image sharpening technique, first implemented in darkroom photography, but now commonly used in digital image processing software. Its name derives from the fact that the techniq
Tone mapping
…the linear handling of luminance. One simple form of tone mapping takes a standard image (not HDR –the dynamic range already compressed) and applies unsharp masking with a large radius, which increases local contrast rather than sharpening. See unsharp masking: local contrast enhancement for details. One of the…
Source image (top), sharpened image (middle), highly sharpened image (bottom)