[PlayRaw] Landsat 8 image of Lake Elton

play_raw

(jimplaxco.com and artsnova.com) #1

Hi everyone,
I’d love to see how others here go about processing the following image.

The full size TIF is here (12meg):
https://www.jimplaxco.com/wp-content/uploads/2018/11/LC08_L1TP_171026_20170912_20170928_01_T1-Lake-Elton.tif

Image file License: https://creativecommons.org/licenses/by-sa/4.0/

It is an unprocessed Landsat 8 image of Lake Elton in Russia. It consists of bands 2(blue), 3(green), 4(red), and 8(panchromatic).
How would you process this image? For reference see Google’s version at
https://www.google.com/maps/@49.1488786,46.6543735,17441m/data=!3m1!1e3

Tip: Lake Elton is not blue - and it’s not winter but September. The lake is ridiculously shallow and is extremely salty and that’s what you are seeing.


Using G'MIC with limited resources
#2

Well, here’s my attempt at processing it with RawTherapee + Krita LAB Color Adjustment -

May have ramped up contrast a little way too much. But not interested into getting around that, so…


(Mica) #3

Hi @JimPlaxco and welcome! For play raw images we generally ask that the image be released under a creative commons license, it doesn’t really matter which one. Can you explicitly assign a license please?


(St.Stephen) #4

LC08_L1TP_171026_20170912_20170928_01_T1-Lake-Elton.tif.xmp (4.7 KB)
LC08_L1TP_171026_20170912_20170928_01_T1-Lake-Elton_01.tif.xmp (5.2 KB)


(jimplaxco.com and artsnova.com) #5

Hi, I added a link to a CC licence for the file in my original post. Thanks for bringing this to my attention.


(jimplaxco.com and artsnova.com) #6

For my part, the top have of the image below is the output from Rawtherapee while the bottom half was done using Photoshop. The colors in the RT version are more natural and thus closer to reality which is what I want. However, I like the heightened contrast of the Photoshop version.

One thing I’d like to point out is that the Photoshop auto contrast tool produces dramatically different results depending on whether you are working in RGB mode or LAB mode. In this case I used LAB mode to make contrast adjustments as well as initial color adjustments - then finished up in RGB mode.


(Mica) #7

Thank you!


#8

LC08_L1TP_171026_20170912_20170928_01_T1-Lake-Elton.tif.xmp (7.9 KB)


#9


LC08_L1TP_171026_20170912_20170928_01_T1-Lake-Elton.jpg.out.pp3 (11.1 KB)


(Shreedhar Inamdar) #10

Here is an attempt in RawTherapee dev 5.4-409-g99caa76f7 using Win10 laptop. I have tried to make it realistic.

LC08_L1TP_171026_20170912_20170928_01_T1-Lake-Elton.jpg.out.pp3 (11.0 KB)


#11


LC08_L1TP_171026_20170912_20170928_01_T1-Lake-Elton.tif.pp3 (13.3 KB)


(Ingo Weyrich) #12


LC08_L1TP_171026_20170912_20170928_01_T1-Lake-Elton.jpg.out.pp3 (11.6 KB)


(jimplaxco.com and artsnova.com) #13

Nicely done.


(jimplaxco.com and artsnova.com) #14

Hi Ingo, wonderful job. The best of all the ones done so far and better than the Google Earth representation at the same level of resolution - which uses images from Digital Globe rather than Landsat.


(Thomas) #15

My try in gimp and darktable.


(Ingo Weyrich) #16

Thanks a lot. Here’s what I did in RT:

First I loaded the image with neutral profile and increased exposure by 2
Left is neutral, right is with +2:

Then I used a simple curve
Left is without curve, right is with curve:

Then I changed white balance:
Left is with camera white balance, right with changed white balance:

Then I enabled Tonemapping;
Left is without, right with Tonemapping:

The I enabled Sharpening and set method to RL deconvolution:
Left is without sharpening, right with:

Edit: I forgot to mention that I enabled ‘Microcontrast’ with default settings as a final step.


(dumb) #17

Nothing like a lossy JPEG to mess with - meaning that in my case, the preview was enough for me to have some fun.


(Ingo Weyrich) #18

Well, that looks kind of your name :wink:


(dumb) #19

Dumb it is, dumb it will remain!


(Ingo Weyrich) #20

Don’t take me serious please :wink: