Use libraw

[farhi]

The DCRAW converter seems to be stalled. David Coffin does not support it any more. The libraw library has a DCRAW compatible mode. One could thus use:

• /usr/lib/libraw/simple_dcraw
• /usr/lib/libraw/dcraw_emu

An other solution is to make use of:

• https://fr.mathworks.com/matlabcentral/fileexchange/70985-matlab-unpackraw
• https://fr.mathworks.com/matlabcentral/answers/72525-how-to-open-raw-files-in-matlab
• https://github.com/EastEriq/matlab-unpackRaw
• http://www.strollswithmydog.com/raw-file-conversion-steps/
• https://fr.mathworks.com/matlabcentral/answers/306767-rgb-layers-separation-for-raw-or-tif-image
• https://www.programmersought.com/article/80461183514/

[farhi]

Options for dcraw_emu (https://www.libraw.org/node/381):

• -g 1.0 1.0 -W -q 3 -c 0

[farhi]

List of supported formats: https://docs.kde.org/trunk5/en/extragear-graphics/digikam/using-imageformats.html#idm222

RAW File Format	Description
CRW, CR2	Canon digital camera RAW file formats
NEF	Nikon digital camera RAW file format
ORF	Olympus digital camera RAW file format
RAF	Fuji digital camera RAW file format
RWL	Leica camera RAW file format
PEF, PTX	Pentax digital camera RAW file format
X3F	Sigma digital camera RAW file format
DCR, KDC, DC2, K25	Kodak digital camera RAW file format
SRF, ARW, MRW, MDC	Sony/Minolta digital camera RAW file format
RAW	Panasonic, Casio, Leica digital camera RAW file format
DNG (CS1, HDR)	Adobe RAW file format (Digital Negative)
BAY	Casio RAW (Bayer)
ERF	Epson digital camera RAW file format
FFF	Imacon/Hasselblad RAW format
MOS	CREO Photo RAW
PXN	Fotoman RAW
RDC	Ricoh RAW format