new filter "Pseudo HDR Effect"

dinasset · **Posted:** Mon Oct 17, 2016 7:11 am **(#1)**

Just published.
http://gimpscripts.com/2016/10/pseudo-hdr-effect/

To be used when an image is too dark (but not black, dark values in it should still have some color values even if low)

dinasset · **Posted:** Mon Oct 17, 2016 7:19 am **(#2)**

a simple example of use

from this

Attachment:

pexels-photo-161999-large.jpg [ 112.19 KiB | Viewed 3479 times ]

to this

Attachment:

PseudoHDR on pexels-photo-161999-large stretch, retinex, satur at 10.0.jpg [ 358.77 KiB | Viewed 3479 times ]

dinasset · **Posted:** Mon Oct 17, 2016 7:28 am **(#3)**

A second example

from this

Attachment:

pexels-photo-162002-large.jpg [ 127.37 KiB | Viewed 3477 times ]

to this

Attachment:

PseudoHDR on pexels-photo-162002-large stretch, retinex, satur at 10.0.jpg [ 417.6 KiB | Viewed 3477 times ]

dinasset · **Posted:** Mon Oct 17, 2016 7:31 am **(#4)**

And a third example

from this

Attachment:

child-973391_960_720.jpg [ 207.29 KiB | Viewed 3476 times ]

to this

Attachment:

PseudoHDR on child-973391_960_720 stretch, dodge-burn, retinex, satur at 25.0.jpg [ 599.5 KiB | Viewed 3476 times ]

Issabella · **Posted:** Mon Oct 17, 2016 8:10 am **(#5)**

How useful this new filter Dinasset! Thank you so much. :tyspin

My photo isn't nice but it is necessary in my album and your filter is great to repair it. :bigthup

Issabella · **Posted:** Mon Oct 17, 2016 8:27 am **(#6)**

This one, too.

Pat625 · **Joined:** May 12, 2015 **Posts:** 4694

Ah, the long awaited filter! Thank you, Dinasset for another brilliant filter!
Original:

Attachment:

Bridge Psuedo HDR Orig.jpg [ 642.65 KiB | Viewed 3384 times ]

Pseudo HDR:

Attachment:

Bridge Pseudo HDR.jpg [ 659.3 KiB | Viewed 3384 times ]

Issabella · **Posted:** Mon Oct 17, 2016 2:16 pm **(#8)**

This filter is really nice to improve dark photos. Pat, good election and result.

Issabella · **Posted:** Mon Oct 17, 2016 2:17 pm **(#9)**

And this photo, too.

paynekj · **Posted:** Mon Oct 17, 2016 2:54 pm **(#10)**

Issabella, I couldn't resist having a go at re-working your tomb picture, although I didn't use the filter as I felt I could do better making the adjustment manually:

Attachment:

IMG_2986-Original-new.jpg [ 1.7 MiB | Viewed 3359 times ]

Mostly done using Photivo then perspective correction in GIMP.

Kevin

Issabella · **Posted:** Mon Oct 17, 2016 3:01 pm **(#11)**

Thank you so much paynekj. You did a clean nice work on this picture. :bump

Pat625 · **Joined:** May 12, 2015 **Posts:** 4694

Thank you Issabella for your nice comments. I found that it brings out the highlights nicely.

Issabella · **Posted:** Mon Oct 17, 2016 3:06 pm **(#13)**

Yes Pat. I'm enjoying this filter a lot.

Meemaw · **Joined:** Mar 15, 2016 **Posts:** 180 **Location:** USA

Nice pics, everyone! Here's my contribution...

Graechan · **Posted:** Mon Oct 17, 2016 7:23 pm **(#15)**

I ran from default settings and it returned this error
GIMP Error
Calling error for procedure 'gimp-procedural-db-proc-info':
Procedure 'python-fu-WhiteBalanceStretch' not found

Meemaw · **Joined:** Mar 15, 2016 **Posts:** 180 **Location:** USA

Graechan wrote:

I ran from default settings and it returned this error
GIMP Error
Calling error for procedure 'gimp-procedural-db-proc-info':
Procedure 'python-fu-WhiteBalanceStretch' not found

I got that too... there's a whitebalacestretch on gimp scripts... you'll have to close Gimp and reopen it.

Graechan · **Posted:** Mon Oct 17, 2016 8:35 pm **(#17)**

Meemaw wrote:

Graechan wrote:

I ran from default settings and it returned this error
GIMP Error
Calling error for procedure 'gimp-procedural-db-proc-info':
Procedure 'python-fu-WhiteBalanceStretch' not found

I got that too... there's a whitebalacestretch on gimp scripts... you'll have to close Gimp and reopen it.

Like me you missed the requirement for 2 dependencies

david · **Joined:** Nov 15, 2014 **Posts:** 866

This new filter gives a real emphasis to colours.

However, I felt that for Issabellas photographs - the tomb and the cathedral(?), fairly monochrome - it was possible to get better results by other means.
So, my attempts and the one of the cathedral also with perspective correction.
(Hopefully, noise is less apparent.)

david.

dinasset · **Posted:** Tue Oct 18, 2016 5:16 am **(#19)**

BTW, you can get also a better outcome playing with PseudoHDREffect parameters:
no WhiteBalance, no Saturation, yes Denoise

w/o any further intervention

Attachment:

PseudoHDR on IMG_2986-Original, dodge-burn, retinex, satur at 0.0.jpg [ 902.24 KiB | Viewed 1263 times ]

afterwards, if the "noise" is not well accepted, there are many denoising possibilities in G'MIC

dinasset · **Posted:** Tue Oct 18, 2016 5:17 am **(#20)**

thanks Issabella, Pat and Meemaw for your tries.
It's a filter which gives somehow "unpredictable" results, sometimes you have to play a bit with the parameters.

edit: the station looks very nice

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