Demosaic raw without any other post-processing

Submitted by HellstormDe on

Hello again,

is there some kind of best practise to just convert/demosaic a raw file without doing any other post-processing.

Basically I need the raw just converted to 16bits per channel RGB without noise reduction, highlight clipping or anything else.

I get my image data with

LibRaw lr;
 
lr.imgdata.params.output_bps = 16;
lr.imgdata.params.gamm[0] = 1;
lr.imgdata.params.gamm[1] = 1;
lr.imgdata.params.no_auto_bright = 1;
lr.imgdata.params.use_camera_wb = 1;
 
lr.open_file(filename);
lr.unpack();
lr.dcraw_process();
 
libraw_processed_image_t * pri = lr.dcraw_make_mem_image(&ret);

And then finally reading pri->data[]

Forums: 

noise reduction and highlight

Submitted by lexa on

noise reduction and highlight recovery are not enabled by default

-- Alex Tutubalin @LibRaw LLC

So calling dcraw_process()

Submitted by HellstormDe on

So calling dcraw_process() with just the settings written above will create a RGB image without any further kind of processing? Thanks!

if you do not want any color

Submitted by lexa on

if you do not want any color profile, you need to set params.output_color=0

With this setting image to be white balanced, demosaiced and scaled to fill 16-bit range.

-- Alex Tutubalin @LibRaw LLC