Author Topic: histogram tool with HDR images  (Read 1876 times)

Offline mikeoday

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histogram tool with HDR images
« on: 2018 March 18 00:15:15 »
Is it possible for a user to modify the histogram tool as follows:
- increase number of levels to say 24bit
- increase maximum zoom from 999 to 9999

The reason?

I process up to 10 sets of integrated images to produce a single 64 bit HDR image and before stretching most of the values are very low.  For example, for my current image with the histogram scale set to 16bit:
68% of pixels are less than or equal to the first histogram division ( 2.53e-5 ) and
96% of pixels are less than or equal to the third division ( 4.58e-5 ).

I would like to be able set a finer scale and greater zoom so that I can display a histogram shape before I stretch the image.

Cheers
Mike

Offline mikeoday

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  • Posts: 25
Re: histogram tool with HDR images
« Reply #1 on: 2018 March 20 18:14:22 »
I added 1/8 sec images to my hdr set and now the dynamic range is 36 bits.  That means that before stretching, almost all the data is represented by the first bar in the histogram!  Can I modify the code for the histogram to show more levels?