How can I modify parameters like "ISO speed","shutter ","timestamp".
For example : firstly, open a Raw file "test.CR2", then define LibRaw RawProcessor; i want to modify "shutter"of "test.CR2",my opinion is : RawProcessor.imagedata.other.shutter=8.9. But it does not work, the "test.CR2" file is not changed. how can i modify some parameters of RAW images.

Hey guys,

thanks for the latest support. I was able to use the demosaic function now by using the right libraw.dll.

Now my program is ready to be released but there is a next problem:

Case: i have two exactly the same images, shot with 5 seconds in between.
These two images are visually identical when viewed:
In their JPEG preview.
In Adobe ACR
In dcraw (tested v9.22, 9.24 and 9.25) with commands -T -w -W.

Then when i use dcraw_emu as:
dcraw_emu -T -w -W

Using exiftool on a .CR2 photo converted to DNG, the following tags can be seen in the printout.

AS_SHOT_NEUTRAL
Raw Data Unique ID

However, when unpacking an image captured from the same camera (Canon 7D), I cannot find that data in the libRaw.imgdata structure, despite reading through the sub-structure data several times when in debug mode. I have found almost everything else needed.

I also scanned the documentation.

Any help wold be welcomed.

Thanks. Great library.

Hello,

I'm currently working on a scientific code that performs correlations to assess displacements between pairs of RAW images. I say that the RAW images come from a PhaseOne IQ180 because it may be the cause of my problem: the demosaicing seems not be accelerated with OpenMP.