本文整理汇总了C++中LibRaw::subtract_black方法的典型用法代码示例。如果您正苦于以下问题：C++ LibRaw::subtract_black方法的具体用法？C++ LibRaw::subtract_black怎么用？C++ LibRaw::subtract_black使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类LibRaw的用法示例。
在下文中一共展示了LibRaw::subtract_black方法的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: main
int main(int ac, char *av[])
{
int i, ret;
int autoscale=0,black_subtraction=1, use_gamma=0;
char outfn[1024];
LibRaw RawProcessor;
if(ac<2)
{
usage:
printf(
"4channeld - LibRaw %s sample. %d cameras supported\n"
"Usage: %s [-s N] [-g] [-A] [-B] [-N] raw-files....\n"
"\t-s N - select Nth image in file (default=0)\n"
"\t-g - use gamma correction with gamma 2.2 (not precise,use for visual inspection only)\n"
"\t-A - autoscaling (by integer factor)\n"
"\t-B - no black subtraction\n"
,LibRaw::version(),
LibRaw::cameraCount(),
av[0]);
return 0;
}
#define P1 RawProcessor.imgdata.idata
#define S RawProcessor.imgdata.sizes
#define C RawProcessor.imgdata.color
#define T RawProcessor.imgdata.thumbnail
#define P2 RawProcessor.imgdata.other
#define OUT RawProcessor.imgdata.params
OUT.document_mode=2;
OUT.output_bps=16;
OUT.output_tiff=1;
OUT.user_flip=0;
OUT.no_auto_bright = 1;
OUT.half_size=1;
for (i=1;i<ac;i++)
{
if(av[i][0]=='-')
{
if(av[i][1]=='s' && av[i][2]==0)
{
i++;
OUT.shot_select=atoi(av[i]);
}
else if(av[i][1]=='g' && av[i][2]==0)
use_gamma = 1;
else if(av[i][1]=='A' && av[i][2]==0)
autoscale=1;
else if(av[i][1]=='B' && av[i][2]==0)
{
black_subtraction=0;
}
else
goto usage;
continue;
}
if(!use_gamma)
OUT.gamm[0] = OUT.gamm[1] = 1;
int c;
printf("Processing file %s\n",av[i]);
if( (ret = RawProcessor.open_file(av[i])) != LIBRAW_SUCCESS)
{
fprintf(stderr,"Cannot open %s: %s\n",av[i],libraw_strerror(ret));
continue; // no recycle b/c open file will recycle itself
}
if(P1.is_foveon)
{
printf("Cannot process Foveon image %s\n",av[i]);
continue ;
}
if( (ret = RawProcessor.unpack() ) != LIBRAW_SUCCESS)
{
fprintf(stderr,"Cannot unpack %s: %s\n",av[i],libraw_strerror(ret));
continue;
}
RawProcessor.raw2image();
if(black_subtraction)
{
RawProcessor.subtract_black();
}
if(autoscale)
{
unsigned max=0,scale=1;
for(int j=0; j<S.iheight*S.iwidth; j++)
for(int c = 0; c< 4; c++)
if(max < RawProcessor.imgdata.image[j][c])
max = RawProcessor.imgdata.image[j][c];
if (max >0 && max< 1<<15)
{
scale = (1<<16)/max;
printf("Scaling with multiplier=%d (max=%d)\n",scale,max);
for(int j=0; j<S.iheight*S.iwidth; j++)
for(c=0;c<4;c++)
RawProcessor.imgdata.image[j][c] *= scale;
}
printf("Black level (scaled)=%d\n",C.black*scale);
//.........这里部分代码省略.........
示例2: libraw_subtract_black
void libraw_subtract_black(libraw_data_t* lr)
{
if(!lr) return;
LibRaw *ip = (LibRaw*) lr->parent_class;
ip->subtract_black();
}示例3: main
int main(int ac, char *av[])
{
int i, ret;
int verbose=1,autoscale=0,use_gamma=0,add_borders=0,subtract_black=0;
char outfn[1024];
LibRaw RawProcessor;
if(ac<2)
{
usage:
printf(
"unprocessed_raw - LibRaw %s sample. %d cameras supported\n"
"Usage: %s [-q] [-A] [-g] [-s N] [-N] raw-files....\n"
"\t-q - be quiet\n"
"\t-s N - select Nth image in file (default=0)\n"
"\t-M - add black (masked) pixels data to bitmap\n"
"\t-B - subtract black level from pixel data\n"
"\t-g - use gamma correction with gamma 2.2 (not precise,use for visual inspection only)\n"
"\t-A - autoscaling (by integer factor)\n"
"\t-N - no raw curve/zeroes filtering\n"
,LibRaw::version(),
LibRaw::cameraCount(),
av[0]);
return 0;
}
#define P1 RawProcessor.imgdata.idata
#define S RawProcessor.imgdata.sizes
#define C RawProcessor.imgdata.color
#define T RawProcessor.imgdata.thumbnail
#define P2 RawProcessor.imgdata.other
#define OUT RawProcessor.imgdata.params
OUT.document_mode=2;
OUT.output_bps=16;
OUT.output_tiff=1;
OUT.user_flip=0;
OUT.no_auto_bright = 1;
OUT.filtering_mode=(LibRaw_filtering)(LIBRAW_FILTERING_NOZEROES);
for (i=1; i<ac; i++)
{
if(av[i][0]=='-')
{
if(av[i][1]=='q' && av[i][2]==0)
verbose=0;
else if(av[i][1]=='A' && av[i][2]==0)
autoscale=1;
else if(av[i][1]=='g' && av[i][2]==0)
use_gamma = 1;
else if(av[i][1]=='M' && av[i][2]==0)
add_borders = 1;
else if(av[i][1]=='B' && av[i][2]==0)
subtract_black = 1;
else if(av[i][1]=='N' && av[i][2]==0)
OUT.filtering_mode=LIBRAW_FILTERING_NONE;
else if(av[i][1]=='s' && av[i][2]==0)
{
i++;
OUT.shot_select=atoi(av[i]);
}
else
goto usage;
continue;
}
if(add_borders && subtract_black)
{
fprintf(stderr,"Cannot add masked pixels data and subtract black simultaneously\n");
exit(1);
}
int c;
if(!use_gamma)
OUT.gamm[0] = OUT.gamm[1] = 1;
if(verbose) printf("Processing file %s\n",av[i]);
if( (ret = RawProcessor.open_file(av[i])) != LIBRAW_SUCCESS)
{
fprintf(stderr,"Cannot open %s: %s\n",av[i],libraw_strerror(ret));
continue; // no recycle b/c open file will recycle itself
}
if(verbose)
{
printf("Image size: %dx%d\nRaw size: %dx%d\n",S.width,S.height,S.raw_width,S.raw_height);
printf("Margins: top=%d, left=%d, right=%d, bottom=%d\n",
S.top_margin,S.left_margin,S.right_margin,S.bottom_margin);
}
if( (ret = RawProcessor.unpack() ) != LIBRAW_SUCCESS)
{
fprintf(stderr,"Cannot unpack %s: %s\n",av[i],libraw_strerror(ret));
continue;
}
if(verbose)
printf("Unpacked....\n");
if(add_borders)
if( (ret = RawProcessor.add_masked_borders_to_bitmap() ) != LIBRAW_SUCCESS)
{
fprintf(stderr,"Cannot add mask data to bitmap %s\n",av[i]);
}
if(subtract_black)
//.........这里部分代码省略.........