Update of /cvsroot/ufraw/ufraw
In directory sfp-cvs-1.v30.ch3.sourceforge.com:/tmp/cvs-serv15188
Modified Files:
dcraw.cc dcraw_api.cc
Log Message:
Feature request #316: Add DR-mode and low-noise support for FUJIFILM Super CCD
SR and EXR cameras. Patch by Frank Markesteijn.
Index: dcraw.cc
===================================================================
RCS file: /cvsroot/ufraw/ufraw/dcraw.cc,v
retrieving revision 1.338
retrieving revision 1.339
diff -u -d -r1.338 -r1.339
--- dcraw.cc 13 Jun 2015 04:00:09 -0000 1.338
+++ dcraw.cc 23 Jun 2015 17:30:12 -0000 1.339
@@ -1966,7 +1966,7 @@
int row, col, bits=0;
while ((unsigned) 1 << ++bits < maximum);
- read_shorts (raw_image, raw_width*raw_height);
+ read_shorts (raw_image, raw_width*raw_height - (fuji_layout && shot_select ?
raw_width >> 1 : 0));
for (row=0; row < raw_height; row++)
for (col=0; col < raw_width; col++)
if ((RAW(row,col) >>= load_flags) >> bits
Index: dcraw_api.cc
===================================================================
RCS file: /cvsroot/ufraw/ufraw/dcraw_api.cc,v
retrieving revision 1.105
retrieving revision 1.106
diff -u -d -r1.105 -r1.106
--- dcraw_api.cc 20 Jun 2015 03:00:38 -0000 1.105
+++ dcraw_api.cc 23 Jun 2015 17:30:12 -0000 1.106
@@ -34,6 +34,10 @@
#define FORC3 FORC(3)
#define FORC4 FORC(4)
#define FORCC FORC(colors)
+
+#define LIM(x,min,max) MAX(min,MIN(x,max))
+#define CLIP(x) LIM((int)(x),0,65535)
+
extern "C" {
int fcol_INDI(const unsigned filters, const int row, const int col,
const int top_margin, const int left_margin,
@@ -211,6 +215,132 @@
}
}
+ void fuji_merge(DCRaw *d, ushort *saved_raw_image, float saved_cam_mul[4],
int saved_fuji_dr)
+ {
+ int i, j, c, s;
+ unsigned b;
+ float S, R, w, l, m, th, tl, mul[4][4];
+
+ if (d->fuji_width) { /* Super CCD SR */
+
+ /* Populate a small array for converting the whitebalance */
+ /* of the second image to that of the first one. */
+
+ if (d->fuji_layout) {
+ /* First generation Super CCD SR (S20Pro, F700, F710)
*/
+ /* Many of these sensors are defective and have a colourcast.
*/
+
+ /* RBRB */
+ /* GGGG */
+ /* BRBR */
+ /* GGGG */
+ mul[1][1] = mul[1][0] = mul[1][2] = mul[1][3] = 1;
+ mul[3][1] = mul[3][0] = mul[3][2] = mul[3][3] = 1;
+ mul[0][0] = mul[0][2] = mul[2][1] = mul[2][3] = d->cam_mul[0]
/ saved_cam_mul[0];
+ mul[0][1] = mul[0][3] = mul[2][0] = mul[2][2] = d->cam_mul[2]
/ saved_cam_mul[2];
+
+ } else { /* Super CCD SR II (S3Pro, S5Pro) */
+
+ /* RGBG */
+ /* BGRG */
+ /* RGBG */
+ /* BGRG */
+ mul[0][1] = mul[0][3] = mul[1][1] = mul[1][3] = 1;
+ mul[2][1] = mul[2][3] = mul[3][1] = mul[3][3] = 1;
+ mul[0][0] = mul[1][2] = mul[2][0] = mul[3][2] = d->cam_mul[0]
/ saved_cam_mul[0];
+ mul[0][2] = mul[1][0] = mul[2][2] = mul[3][0] = d->cam_mul[2]
/ saved_cam_mul[2];
+ }
+
+ for (i = 0 ; i < d->raw_height; i++)
+ for (j = 0 ; j < d->raw_width; j++) {
+
+ S = saved_raw_image[i * d->raw_width + j];
+ R = d->raw_image[i * d->raw_width + j] * mul[i & 3][j & 3]
* 16;
+
+ /* Fade from S to R in one stop. */
+ /* Response of these sensors appears to be non-linear, */
+ /* causing a slight colourcast in the transition zone. */
+ if (S > 0x1f00) {
+ if (S < 0x3e00) {
+ w = (S - 0x1f00) / 0x1f00;
+ S = (1 - w) * S + w * R;
+ } else
+ S = R;
+ }
+
+ d->raw_image[i * d->raw_width + j] = CLIP((S * 0xffff /
0x2f000));
+ }
+
+ d->maximum = 0xffff;
+
+ FORC4 d->cam_mul[c] = saved_cam_mul[c];
+
+ d->fuji_dr = -400;
+
+ } else { /* EXR */
+
+ if (d->black)
+ b = d->black;
+ else
+ b = d->cblack[6];
+
+ s = (saved_fuji_dr - d->fuji_dr) / 100;
+
+
+ if (s) { /* DR-mode */
+
+ th = l = d->maximum - b;
+ m = 1 << s;
+ tl = th / m;
+ th += tl;
+ m += 1;
+ l *= m;
+
+ for (i = 0 ; i < d->raw_height * d->raw_width; i++) {
+
+ /* Range check to avoid problems when value is below
black. */
+ S = LIM(saved_raw_image[i], b, d->maximum) - b;
+ R = LIM(d->raw_image[i], b, d->maximum) - b;
+ /* Adding R to S pixels reduces noise a bit. */
+ S += R;
+ R *= m;
+
+ /* Fade from S to R in ~1.5 or 2.25 stops. */
+ /* Response of EXR sensors appears to be linear. */
+ if (S > tl) {
+ if (S < th) {
+ w = (S - tl) / (th - tl);
+ S = (1 - w) * S + w * R;
+ } else
+ S = R;
+ }
+
+ /* l can be larger than 0xffff. */
+ d->raw_image[i] = CLIP(S * 0xffff / l);
+ }
+
+ d->maximum = 0xffff;
+ d->black = 0;
+
+ for (i = 6 ; i < 10 ; i++)
+ d->cblack[i] = 0;
+
+ //d->fuji_dr = saved_fuji_dr;
+
+ } else { /* Low-noise-mode */
+
+ for (i = 0 ; i < d->raw_height * d->raw_width ; i++)
+ d->raw_image[i] += saved_raw_image[i];
+
+ d->maximum *= 2;
+ d->black *= 2;
+
+ for (i = 6 ; i < 10 ; i++)
+ d->cblack[i] *= 2;
+ }
+ }
+ }
+
int dcraw_load_raw(dcraw_data *h)
{
/* 'volatile' supresses clobbering warning */
@@ -298,6 +428,39 @@
tmp = NULL;
}
+ /* Fuji Super CCD SR and EXR support */
+ if (d->is_raw == 2 && !strncasecmp(d->make, "Fujifilm", 8)) {
+
+ static int saved_fuji_dr;
+ static float saved_cam_mul[4];
+ static guint16 *saved_raw_image = NULL;
+
+ if (!saved_raw_image) {
+
+ saved_raw_image = d->raw_image;
+ d->raw_image = NULL;
+ saved_fuji_dr = d->fuji_dr;
+ FORC4 saved_cam_mul[c] = d->cam_mul[c];
+
+ d->shot_select++;
+ fseek(d->ifp, 0, SEEK_SET);
+ d->identify();
+ goto start;
+ }
+
+ fuji_merge(d, saved_raw_image, saved_cam_mul, saved_fuji_dr);
+
+ free(saved_raw_image);
+ saved_raw_image = NULL;
+ d->shot_select--;
+
+ FORC4 h->cam_mul[c] = d->cam_mul[c];
+ h->fuji_dr = d->fuji_dr;
+ h->filters = d->filters;
+ h->rgbMax = d->maximum;
+ h->black = d->black;
+ }
+
h->raw.height = d->iheight = (h->height + h->shrink) >> h->shrink;
h->raw.width = d->iwidth = (h->width + h->shrink) >> h->shrink;
if (d->raw_image) {
------------------------------------------------------------------------------
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