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HDR on line through the fusion of two or three differently exposed pictures

This page allows create HDR images by merging two or three photos exposed in a different way, in order to obtain a final more realistic image than the initial ones. Although it is not HDR in the strict sense, the resulting picture is an HDR image in a broad sense (HDR is the the acronym for High Dynamic Range), since it equivalentas to what you would get from a sensor with a greater dynamic range, with a better signal to noise ration in the darker parts and which doesn't saturate in the brighter part.
For a description of the approach to the problem and for the instructions for this page look on the page HDR on line through the fusion of two or three differently exposed pictures.
The default values are the ones which proved to be the best in most cases!
The pictures you can find in the section What to see in Milan: Less known treasures of art and history have almost all obtained from two starting pictures fused using the algorythm contained in this page .
Note 1: The shift correction is for the moment possible only in the case of merging two pictures.
Note 2: If you want to let the system calculate the shift using a customized rectangle, click once on the high lights picture to begin it and click twice to close it!
Attention: If you use too large pictures (like > 12Mp) it can cause an error!
Choose the High Lights

Choose Low Lights


Larger side length of the preview

  
  

Luminosity 1

Luminosity 2






 
 



Delta X: Delta Y:

High Lights Picture





Low Lights Picture











HDR Preview



HDR Image