EXIF in JPEGs and TIFFs
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| EXIF in JPEGs and TIFFs | Jason Van Patten | 14 Mar 20:09 |
| EXIF in JPEGs and TIFFs | Sven Neumann | 17 Mar 21:26 |
| EXIF in JPEGs and TIFFs | Raphaël Quinet | 18 Mar 21:49 |
| EXIF in JPEGs and TIFFs | Lutz Müller | 17 Mar 21:51 |
| EXIF in JPEGs and TIFFs | Jason Van Patten | 17 Mar 20:36 |
| EXIF in JPEGs and TIFFs | Jason Van Patten | 19 Mar 15:52 |
EXIF in JPEGs and TIFFs
I'm sure this has been asked 5 bzillion times, so make this 5 bzillion and one. :-) Is there a plan to support reading/writing EXIF information found in files such as JPEGs and TIFFs? I've followed older threads that lead me to Lutz's libexif, which I'm up-to-date on. But, without applying a very hairy patch to 1.3.x, I can't get GIMP to work with it.
And, libexif is JPEG-centric. It's certainly handy, but it'd be even moreso to support other file formats (TIFF specifically.) Daniel Stephens has written a C++ based CLI app called metacam http://www.cheeseplant.org/~daniel/pages/metacam.html which actually can read JPEGs and TIFFs. Is that something someone could work with and develop into a plugin? I've contacted Daniel and asked him a similar question; he said anyone can take what they want from his code but he hasn't a lot of time to donate to development.
$ file F1A.TIF F1A.TIF: TIFF image data, little-endian
$ metacam F1A.TIF
File: F1A.TIF
Standard Fields -----------------------------------
Image Creation Date: 2002:11:14 13:52:51
Make: Canon
Model: Canon EOS-1DS
Software Version: Adobe Photoshop 7.0
X Resolution: 72 Pixels/Inch
Y Resolution: 72 Pixels/Inch
Samples Per Pixel: 3
Bits Per Sample: (8,8,8)
Photometric Interpretation: RGB
Compression: Uncompressed
EXIF Fields ---------------------------------------
Image Capture Date: 2002:10:11 12:12:40
Image Digitized Date: 2002:10:11 12:12:40
Exposure Bias: 0 EV
Focal Length: 600mm
Exposure Time: 1/500 Sec.
Aperture: f5.6
Exif Image Width: 4064 pixels
Exif Image Height: 2704 pixels
Exposure Mode: Manual Exposure
White Balance: Auto White Balance
ISO Speed Rating: 10 (50)
EXIF Version: 0220
FlashPix Version: 0100
Aperture Value: f5.6
Focal Plane X Resolution: 11822545/4096 Pixels/Inch
Focal Plane Y Resolution: 2955065/1024 Pixels/Inch
Shutter Speed Value: 1/512 Sec.
ColorSpace: sRGB
Scene Capture Type: Standard
jas
EXIF in JPEGs and TIFFs
Lutz Müller wrote:
The current state is that there has been a patch to preserve and edit EXIF information in JPEGs using libexif. This patch never got into the GIMP nor was updated to 1.3.x as
Odd. I was able to get the patch to apply (by hand, with a sledge hammer :-)) to 1.3.8. I had no luck getting it to apply to 1.2.x. I haven't tried to apply it to 1.3.12 though. Looks like things in the jpeg.c plugin have changed enough to confuse me.
jas
EXIF in JPEGs and TIFFs
Hi,
Jason Van Patten writes:
I'm sure this has been asked 5 bzillion times, so make this 5 bzillion and one. :-) Is there a plan to support reading/writing EXIF information found in files such as JPEGs and TIFFs? I've followed older threads that lead me to Lutz's libexif, which I'm up-to-date on. But, without applying a very hairy patch to 1.3.x, I can't get GIMP to work with it.
this issue is being tracked at
http://bugzilla.gnome.org/show_bug.cgi?id=56443
Actually I was hoping we'd have some support for EXIF metadata by now since several people volunteered to work on this stuff. Unfortunately nothing usable has surfaced so far which means that it is very unlikely that GIMP-1.4 will have this feature.
Salut, Sven
EXIF in JPEGs and TIFFs
On Fri, 2003-03-14 at 20:09, Jason Van Patten wrote:
Is there a plan to support reading/writing EXIF information found in files such as JPEGs and TIFFs?
Sure. The plan is to come up with some mechanism to store information (like EXIF) in and convert that information between several different file formats, including JPEG and TIFF (Sven et aliud).
The current state is that there has been a patch to preserve and edit
EXIF information in JPEGs using libexif. This patch never got into the
GIMP nor was updated to 1.3.x as
(1) it would add another dependency to an external library
(2) it would not reach the goal as stated in above plan.
And, libexif is JPEG-centric. It's certainly handy, but it'd be even moreso to support other file formats (TIFF specifically.)
This request pops up a lot. My camera is really old and can't produce TIFFs. So, I don't have any incentives to add support for TIFFs to libexif. But I will happily integrate patches that are sent to me.
EXIF in JPEGs and TIFFs
On 17 Mar 2003 21:26:22 +0100, Sven Neumann wrote:
Jason Van Patten writes:
I'm sure this has been asked 5 bzillion times, so make this 5 bzillion and one. :-) Is there a plan to support reading/writing EXIF information found in files such as JPEGs and TIFFs?
[...]
this issue is being tracked at
http://bugzilla.gnome.org/show_bug.cgi?id=56443
Actually I was hoping we'd have some support for EXIF metadata by now since several people volunteered to work on this stuff. Unfortunately nothing usable has surfaced so far which means that it is very unlikely that GIMP-1.4 will have this feature.
This is mostly my fault. Since last year, I planned to add EXIF support in the "right" way, but I haven't been able to start implementing this.
As we have seen the problems caused in the GIMP by some features that are implemented as quick hacks and then become unmaintained, I think that it is important to add EXIF support correctly, in a framework that supports EXIF for JPEG and TIFF (and maybe PNG), but also allows XMP/IPTC metadata (later). Although there have been several proposals to add a quick hack to "support EXIF" by simply copying the whole EXIF block from one JPEG file to another one, this is wrong (according to the EXIF spec) and I don't think that it would be a good idea to include this in the GIMP because this solution would be a dead end.
So until a correct implementation is done in the GIMP, I prefer to recommend the usage of external tools.
I'm still hoping to be able to start implementing this "soon"...
-Raphaël
EXIF in JPEGs and TIFFs
Lutz Müller wrote:
EXIF information in JPEGs using libexif. This patch never got into the GIMP nor was updated to 1.3.x as
Did some 'sledgehammer hacking' to get the old exif patch to work under GIMP 1.3.12. It's attached as a text file. I assume absolutely no responsibility for it. It's allll Lutz's fault. ;-)
jas
