1.6.1 build 1665 - Would this be possible?

Submitted by ohaya on Sun, 11/08/2020 - 11:18
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General discussion

Hi,
I just updated to the above version and noticed that you added a "Display Fine Detail" (D) button to the USM.
That is pretty nice, and I think makes it somewhat possible to use that to cull images for sharpness, but I still have to look for the amount of the "bright red" areas (more of those around edges seems to ==> sharper). 
So I was wondering if it'd be possible to add a feature to FRV when I could select an area, and FRV could calculate some number that is indicative of the number of bright red areas within the boundary?
Or something like that?
Thanks,
Jim

LibRaw

Sun, 11/08/2020 - 12:26

Dear Sir:

Good local contrast is not a single-digit indicator of sharpness. FastRawViewer only highlights the areas where a significant local contrast is present, but it takes a bit more than just an AI  to decide if those areas are in sharp focus. The best judge here is the photographer.

ohaya

Sun, 11/08/2020 - 13:33

But that (the human part) is what I am suggesting by when I said that the user can select a "area-of-interest" (AOI), then then FRF would calculate the score of the bright red areas (which I think indicate what you call local contrast?).  When I am culling, I know which area(s) I am looking for sharpness (clear edges), but it would be nice if FRV could help provide an objective "score". 
I really do like the new fine detail feature and that helps a lot though.

LibRaw

Sun, 11/08/2020 - 13:37

Dear Sir:

The moment we calculate a score it begins to affect the decisions of photographers. In a lot of cases such a score will be misleading. We really know what we are talking about ;) 

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