F9_JPEG.hdr
<https://drive.google.com/a/colorado.edu/file/d/0BxLlZSZVOZo2Y1hxV1M1d19pY0E/view?usp=drive_web>
F9_RAW.hdr
<https://drive.google.com/a/colorado.edu/file/d/0BxLlZSZVOZo2akQxTUlEN2hic2s/view?usp=drive_web>
RAWwithBars.hdr
<https://drive.google.com/a/colorado.edu/file/d/0BxLlZSZVOZo2SE1nVVFBZksxQ2M/view?usp=drive_web>
All,
I have recently been using hdrgen and raw2hdr in an effort to make
comparisons between the quality of data between JPEG and RAW image files.
However, I have come across a couple of issues with raw2hdr. The main one
being that we are getting a consistent green tint to the RAW HDR images
created with raw2hdr, which is not shown in its counterpart HDR image
created with hdrgen. I have attached the images for reference. The two HDR
images are composed of the same sets of LDR images taken at the same time
except, of course, with one created with the JPEG files and one with the
RAW files.
A second issue, which has only happened once so far, is that I am getting a
diagonal white bar in the final composed HDR image. I was able to create a
corrected image by toggling on the -x setting, to remove over- and
under-exposed images, but I was still curious what exactly is causing this
type of error so I can avoid it moving forward. Again, image has been
attached for reference.
If the links to the images are not working, please let me know and I can
send them directly.
Any insight is much appreciated!
Mio Stanley
Graduate Student, University of Colorado Boulder
Hi Mio,
I am not seeing the same problems as you are. Here is what I get using your exact command with my version of raw2hdr:
http://www.anyhere.com/gward/pickup/outputHalfOnF9RAW.hdr
Have you updated your version of dcraw? Sometimes, there are improvements and bug fixes (and new camera support) that require an update. I am currently using dcraw v9.26, and the attached raw2hdr.pl script.
The latest version of dcraw is always available from Dave Coffin's website:
https://www.cybercom.net/~dcoffin/dcraw/
Just download dcraw.c and compile with:
cc -DNODEPS -O2 -o dcraw dcraw.c -lm
Then (of course) copy the new version of dcraw to the appropriate executable directory.
The green cast could be a white balance issue. Sometimes, using raw2hdr -w helps with this. I wasn't seeing it (at least not severely) in my run, though.
Best,
-Greg
raw2hdr.pl (492 Bytes)
raw2hdr.pl (2.82 KB)
···
From: "Gregory J. Ward" <[email protected]>
Subject: Re: [HDRI] raw2hdr Image Issues
Date: July 1, 2015 9:39:17 AM PDT
I mean for the NEF files. If you could upload as a ZIP, that would be great. I just found the JPEG archive attachment.
Cheers,
-G
From: Mio Jane Stanley <[email protected]>
Subject: Re: [HDRI] raw2hdr Image Issues
Date: July 1, 2015 7:57:29 AM PDT
Greg,
Below is the input I used to create the HDR images, the images are attached in a zip file.
raw2hdr -o outputHalfOnF9RAW.hdr DSC_0102.NEF DSC_0103.NEF DSC_0104.NEF DSC_0105.NEF DSC_0106.NEF DSC_0107.NEF DSC_0108.NEF DSC_0109.NEF DSC_0110.NEF DSC_0111.NEF DSC_0112.NEF DSC_0113.NEF DSC_0114.NEF DSC_0115.NEF DSC_0116.NEF DSC_0117.NEF DSC_0118.NEF DSC_0119.NEF DSC_0120.NEF
hdrgen -o outputHalfOnF9JPEG.hdr -a DSC_0102.JPG DSC_0103.JPG DSC_0104.JPG DSC_0105.JPG DSC_0106.JPG DSC_0107.JPG DSC_0108.JPG DSC_0109.JPG DSC_0110.JPG DSC_0111.JPG DSC_0112.JPG DSC_0113.JPG DSC_0114.JPG DSC_0115.JPG DSC_0116.JPG DSC_0117.JPG DSC_0118.JPG DSC_0119.JPG DSC_0120.JPG
On Tue, Jun 30, 2015 at 6:00 PM, Gregory J. Ward <[email protected]> wrote:
Hi Mio,
Can you send me the original exposures (JPEG & RAW) as well as the options you are using for hdrgen and raw2hdr?
Thanks.
-Greg
From: Mio Jane Stanley <[email protected]>
Subject: [HDRI] raw2hdr Image Issues
Date: June 30, 2015 1:29:17 PM PDT
All,
I have recently been using hdrgen and raw2hdr in an effort to make comparisons between the quality of data between JPEG and RAW image files. However, I have come across a couple of issues with raw2hdr. The main one being that we are getting a consistent green tint to the RAW HDR images created with raw2hdr, which is not shown in its counterpart HDR image created with hdrgen. I have attached the images for reference. The two HDR images are composed of the same sets of LDR images taken at the same time except, of course, with one created with the JPEG files and one with the RAW files.
A second issue, which has only happened once so far, is that I am getting a diagonal white bar in the final composed HDR image. I was able to create a corrected image by toggling on the -x setting, to remove over- and under-exposed images, but I was still curious what exactly is causing this type of error so I can avoid it moving forward. Again, image has been attached for reference.
If the links to the images are not working, please let me know and I can send them directly.
Any insight is much appreciated!
Mio Stanley
Graduate Student, University of Colorado Boulder
_______________________________________________
HDRI mailing list
[email protected]
http://www.radiance-online.org/mailman/listinfo/hdri
[The attachment Archive.zip has been manually removed]
Hi Mio,
I'm glad the new version of dcraw solved your problems. In future posts to the HDRI list, please link images to a URL as you did before or at most attach low-res JPEGs. The PNG files ended up being 10+ MBytes.
Cheers!
-Greg
···
From: Mio Jane Stanley <[email protected]>
Subject: Re: [HDRI] raw2hdr Image Issues
Date: July 2, 2015 10:38:26 AM PDT
Greg,
Thank you, the new dcraw seemed to get rid of the green tint. It is still a different color, it's a warmer white than the hydrogen image. With the -w added, the raw2hdr image becomes a cooler white more similar to that of hdrgen.
I've attached png screenshots of the images for reference, just so I don't have to send the large HDR files through email.
Thanks,
Mio
On Wed, Jul 1, 2015 at 2:28 PM, Gregory J. Ward <[email protected]> wrote:
Hi Mio,
I am not seeing the same problems as you are. Here is what I get using your exact command with my version of raw2hdr:
http://www.anyhere.com/gward/pickup/outputHalfOnF9RAW.hdr
Have you updated your version of dcraw? Sometimes, there are improvements and bug fixes (and new camera support) that require an update. I am currently using dcraw v9.26, and the attached raw2hdr.pl script.
The latest version of dcraw is always available from Dave Coffin's website:
https://www.cybercom.net/~dcoffin/dcraw/
Just download dcraw.c and compile with:
cc -DNODEPS -O2 -o dcraw dcraw.c -lm
Then (of course) copy the new version of dcraw to the appropriate executable directory.
The green cast could be a white balance issue. Sometimes, using raw2hdr -w helps with this. I wasn't seeing it (at least not severely) in my run, though.
Best,
-Greg
From: "Gregory J. Ward" <[email protected]>
Subject: Re: [HDRI] raw2hdr Image Issues
Date: July 1, 2015 9:39:17 AM PDT
I mean for the NEF files. If you could upload as a ZIP, that would be great. I just found the JPEG archive attachment.
Cheers,
-G
From: Mio Jane Stanley <[email protected]>
Subject: Re: [HDRI] raw2hdr Image Issues
Date: July 1, 2015 7:57:29 AM PDT
Greg,
Below is the input I used to create the HDR images, the images are attached in a zip file.
raw2hdr -o outputHalfOnF9RAW.hdr DSC_0102.NEF DSC_0103.NEF DSC_0104.NEF DSC_0105.NEF DSC_0106.NEF DSC_0107.NEF DSC_0108.NEF DSC_0109.NEF DSC_0110.NEF DSC_0111.NEF DSC_0112.NEF DSC_0113.NEF DSC_0114.NEF DSC_0115.NEF DSC_0116.NEF DSC_0117.NEF DSC_0118.NEF DSC_0119.NEF DSC_0120.NEF
hdrgen -o outputHalfOnF9JPEG.hdr -a DSC_0102.JPG DSC_0103.JPG DSC_0104.JPG DSC_0105.JPG DSC_0106.JPG DSC_0107.JPG DSC_0108.JPG DSC_0109.JPG DSC_0110.JPG DSC_0111.JPG DSC_0112.JPG DSC_0113.JPG DSC_0114.JPG DSC_0115.JPG DSC_0116.JPG DSC_0117.JPG DSC_0118.JPG DSC_0119.JPG DSC_0120.JPG
On Tue, Jun 30, 2015 at 6:00 PM, Gregory J. Ward <[email protected]> wrote:
Hi Mio,
Can you send me the original exposures (JPEG & RAW) as well as the options you are using for hdrgen and raw2hdr?
Thanks.
-Greg
From: Mio Jane Stanley <[email protected]>
Subject: [HDRI] raw2hdr Image Issues
Date: June 30, 2015 1:29:17 PM PDT
All,
I have recently been using hdrgen and raw2hdr in an effort to make comparisons between the quality of data between JPEG and RAW image files. However, I have come across a couple of issues with raw2hdr. The main one being that we are getting a consistent green tint to the RAW HDR images created with raw2hdr, which is not shown in its counterpart HDR image created with hdrgen. I have attached the images for reference. The two HDR images are composed of the same sets of LDR images taken at the same time except, of course, with one created with the JPEG files and one with the RAW files.
A second issue, which has only happened once so far, is that I am getting a diagonal white bar in the final composed HDR image. I was able to create a corrected image by toggling on the -x setting, to remove over- and under-exposed images, but I was still curious what exactly is causing this type of error so I can avoid it moving forward. Again, image has been attached for reference.
If the links to the images are not working, please let me know and I can send them directly.
Any insight is much appreciated!
Mio Stanley
Graduate Student, University of Colorado Boulder
_______________________________________________
HDRI mailing list
[email protected]
http://www.radiance-online.org/mailman/listinfo/hdri
[The attachment Archive.zip has been manually removed]
[The attachment hdrgen.png has been manually removed]
[The attachment raw2hdr_whitebalanced.png has been manually removed]
[The attachment raw2hdrNew.png has been manually removed]