ACOLITE forum

Will it be possible to supply alternative RGB stretching methods for the creation of RGB images?

For example, it will be useful to have a RGB stretching that works well in high-latitude/low sun zenith angle scenes.

The problem is that in areas of bright land (such as snow, ice and desert) it can be difficult to get a good RGB image.

I second this request - ability to output log-scaled RGB images would be a nice feature.

Thanks in advance for considering.

Hi Brian

There will probably be a couple of new options in the next ACOLITE version: linear/log/asinh/sqrt stretches and an attempt at automatic range setting (using 1 and 99 percentiles).

For sites with bright deserts or beaches these options should work pretty well. For high latitude images with low sun, dark water, and snow getting a nice RGB image is not so straightforward.

Could you list some scenes where you find the current RGB method to be unsatisfactory?

Quinten