Panchromatic sharpening is used to increase the spatial resolution and provide a better visualization of a multiband image using the high-resolution, single-band image. An example of panchromatic sharpening.

What do you mean by panchromatic image?

The Panchromatic image is made when the imaging sensor becomes sensitive to a huge amount of light wavelengths, normally straddling a big spectrum visible part. The sensor is a channel detector that is sensitive to radiation within the range of the broad wavelength.

What is panchromatic sharpening?

Panchromatic sharpening (pan-sharpening) is a technique that combines the high-resolution detail from a panchromatic band with the lower-resolution color information of other bands (usually only the visible bands).