Dynamic Photo HDR

Creating HDR 31

Note: Images that do not cover the whole dynamic range will make poor Tone-mapped results.

3.8 Resizing HDR

Menu: Image - Resize

Many times if you need a tone-mapped image for web you don't really need to process the huge 10

Mega-pixel image that is today common for many cameras.

Resizing the HDR image in half before tone-mapping will not only speed up the tone-mapping, but

often make the result look more vivid with less noise, especially if the original size is very large.

Many camera manufacturers today play the "number" game, where increasing number of pixels is

somehow assumed to increase the overall image quality, but that is simply not always the case,

especially if you (as the vast majority of users) are not making a poster-size printouts.

Processing HDR image in a 4368 x 2912 pixels only to display it as 800 x 600 on web page is simply

not a very good idea as many of the small pixel noise visible in the full image will translate into more

gray-looking result.

It is often a good idea to cut a large image in half, or if using it only for web simply resize it to the final

size before tone-mapping.