LibRaw technical support

Stable LibRaw versions: technical support, errors, API questions

Using in VS to read/write DNG files

Submitted by Maxotics on

The new Canon cameras use a hybrid focusing system that creates post-processing difficulties with Magic Lantern's RAW video output. The focus pixels end up in the image. You need to interpolate around them. There is Java based software "Pink Dot Remover" that does this. However, it has issues, the first being in Java ;)

There are multi-OS raw2dng converters that works well in creating DNG files from ML RAW.

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Using LibRaw directly within project

Submitted by DragonTEC on

Hi,

I was wondering if it is possible to use the LibRaw sources directly within another project without building a library first, mostly for better debugging purposes (like using GDB).

On my system (win7 with mingw and eclipse cdt) I tried both adding the folders (libraw, src, internal and dcraw) to the source directory and somewhere else and added necessary libraries (-lm and -lws2_32). When adding into source file and to build path, everything gets build in no particular include order so I get errors like

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Problem with libraw 0.15.2

Submitted by PFindMichael on

Hello Alex,

i am sure you remember me. I am the developer of "PFind" and I am using your libraw.dll.

Some days ago I updated my code to use your new version ob libraw v 0.15.2. Compiling went fine but there is a major problem:

When I execute (your file from the zipfile) as following:

simple_dcraw.exe -D -v -T problem.cr2

I get an tiff file (of course :-) - but the right area of the image shows an error/strange image data.

When I do it with a "Canon EOS M" everything goes fine.

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Mac issue in 0.15.2 vs. 0.14.8

Submitted by celstark on

A few particulars - I am building a 32-bit (i386) version and linking using static libs. Compilation is on a 10.7.5 machine and with both 0.14.8 and 0.15.2, I use:

setenv LDFLAGS "-arch i386 -F/Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks -L/Developer/SDKs/MacOSX10.6.sdk/usr/local/lib"
setenv CPPFLAGS "-arch i386 -I/Developer/SDKs/MacOSX10.6.sdk/usr/include -isysroot /Developer/SDKs/MacOSX10.6.sdk -mmacosx-version-min=10.5"
./configure --disable-demosaic-pack-gpl2 --disable-demosaic-pack-gpl3
make

(and I link to the .libs/libraw.a)

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Compile visual studio solution with demosaic pack

Submitted by jean80it on

I'd like to use a couple features of demosaic pack (namely amaze and CA correction) from a command line tool.
Think the best would be to start compiling libraw with demosaic pack support. I found the location into makefile to uncomment in order to compile with demosaic pack support, but i'm on Win/VS and would like to compile from there.
Plain compilation is OK under VS2012.
I tried adding a project with files from demosaic pack GPL 3 but it fails (probably due to unsatisfied dependancies).

Any hint/advice?

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adding LibRaw-demosaic-pack-GPL3 support

Submitted by jean80it on

Hi all! I came to know libraw searching for infos on CA_correct_RT.cc since i'm impressed of RawTherapee results in automatic chromatic aberration correction.
It would be awesome for my workflow to be able to use a command line tool to convert raw to more suitable formats and removinc CA in the process.
I successfully downloaded and compiled libRaw (on win8/VS2012) but now i'm a little confused about how to add LibRaw-demosaic-pack-GPL3 goodies.

Any advice?

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The usage of user_sat

Submitted by Novfrank on

I modified the value of user_sat from -ve to +ve, however the effect is weird. -ve values do not cause any effect on the image while positive values do not cause obvious effect. The +ve values, for an extreme effect, say 9000, only make the image being darker and more red.

I am wondering the usage of user_sat here. Should modifying saturation can make the image change from a black and white image to a very deep colored image?? It's because I see other image processing software is working like this when adjusting the saturation.

I'm using LibRaw 0.15.0-Beta4.

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