| 1 |
greg |
2.1 |
#ifndef lint |
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static const char RCSid[] = "$Id$"; |
| 3 |
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#endif |
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/* |
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* pmblur2.c - program to computer better motion blur from ranimove frames. |
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* |
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* Created by Greg Ward on 10/3/12. |
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*/ |
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#include "copyright.h" |
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#include "standard.h" |
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#include "platform.h" |
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#include "color.h" |
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#include "view.h" |
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#define ZGONE (2.*FHUGE) /* non-existent depth value */ |
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| 19 |
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const char *hdrspec; /* HDR image specification string */ |
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const char *zbfspec; /* depth buffer specification string */ |
| 21 |
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const char *mvospec; /* motion vector specification string */ |
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RESOLU imres; /* image size and orientation */ |
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double pixaspect = 1.; /* pixel aspect ratio */ |
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COLOR *imsum; /* blurred image in progress */ |
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VIEW vwsum; /* averaged view for blurred image */ |
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char imfmt[32] = PICFMT; /* image format */ |
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int nsamps; /* number of time samples */ |
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COLOR *imbuf; /* accumulation buffer for this time sample */ |
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float *zbuf; /* associated depth buffer */ |
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COLR *imprev; /* previous loaded image frame */ |
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float *zprev; /* loaded depth buffer */ |
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double exprev; /* previous image exposure */ |
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VIEW vwprev = STDVIEW; /* previous view */ |
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int fnprev; /* frame number for previous view */ |
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char *progname; /* global argv[0] */ |
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typedef struct { |
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VIEW *vp; /* view pointer */ |
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int gotview; /* got view parameters? */ |
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double ev; /* exposure value */ |
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} IMGHEAD; /* holder for individual header information */ |
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/* Process line from picture header */ |
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static int |
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headline(char *s, void *p) |
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{ |
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IMGHEAD *ip = (IMGHEAD *)p; |
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char fmt[32]; |
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if (isview(s)) { |
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ip->gotview += (sscanview(ip->vp, s) > 0); |
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return(1); |
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} |
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if (isexpos(s)) { |
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ip->ev *= exposval(s); |
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return(1); |
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} |
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if (formatval(fmt, s)) { |
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if (globmatch(imfmt, fmt)) { |
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strcpy(imfmt, fmt); |
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return(1); |
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} |
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error(WARNING, "wrong picture format"); |
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return(-1); |
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} |
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if (isaspect(s)) { |
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pixaspect = aspectval(s); |
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return(1); |
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} |
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return(0); |
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} |
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/* Load previous frame (allocates arrays on first call) */ |
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static void |
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loadprev(int fno) |
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{ |
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char *err; |
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IMGHEAD ih; |
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RESOLU rs; |
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char fname[256]; |
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FILE *fp; |
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int y, hres; |
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int fd; |
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if (fno == fnprev) /* already loaded? */ |
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return; |
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sprintf(fname, hdrspec, fno); /* open picture file */ |
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if ((fp = fopen(fname, "r")) == NULL) { |
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sprintf(errmsg, "cannot open picture file \"%s\"", fname); |
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error(SYSTEM, errmsg); |
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} |
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ih.vp = &vwprev; |
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ih.gotview = 0; |
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ih.ev = 1.; |
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if (getheader(fp, headline, &ih) < 0) |
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goto readerr; |
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if (!ih.gotview) { |
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sprintf(errmsg, "missing view in picture \"%s\"", fname); |
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error(USER, errmsg); |
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} |
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if ((err = setview(&vwprev)) != NULL) |
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error(USER, err); |
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exprev = ih.ev; |
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if (!fgetsresolu(&rs, fp)) |
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goto readerr; |
| 114 |
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if (!imres.xr) { /* allocate buffers */ |
| 115 |
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imres = rs; |
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imsum = (COLOR *)ecalloc(imres.xr*imres.yr, sizeof(COLOR)); |
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imbuf = (COLOR *)emalloc(sizeof(COLOR)*imres.xr*imres.yr); |
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zbuf = (float *)emalloc(sizeof(float)*imres.xr*imres.yr); |
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imprev = (COLR *)emalloc(sizeof(COLR)*rs.xr*rs.yr); |
| 120 |
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zprev = (float *)emalloc(sizeof(float)*rs.xr*rs.yr); |
| 121 |
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} else if ((imres.xr != rs.xr) | (imres.yr != rs.yr)) { |
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sprintf(errmsg, "resolution mismatch in picture \"%s\"", fname); |
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error(USER, errmsg); |
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} |
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hres = scanlen(&rs); /* load picture */ |
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for (y = 0; y < numscans(&rs); y++) |
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if (freadcolrs(imprev + y*hres, hres, fp) < 0) |
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goto readerr; |
| 129 |
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fclose(fp); |
| 130 |
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sprintf(fname, zbfspec, fno); /* load depth buffer */ |
| 131 |
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if ((fd = open(fname, O_RDONLY)) < 0) { |
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sprintf(errmsg, "cannot open depth buffer \"%s\"", fname); |
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error(SYSTEM, errmsg); |
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} |
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if (read(fd, zprev, sizeof(float)*rs.xr*rs.yr) != sizeof(float)*rs.xr*rs.yr) |
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goto readerr; |
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close(fd); |
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fnprev = fno; |
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return; |
| 140 |
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readerr: |
| 141 |
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sprintf(errmsg, "error loading file \"%s\"", fname); |
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error(USER, errmsg); |
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} |
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| 145 |
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| 146 |
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/* Interpolate between two image pixels */ |
| 147 |
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/* XXX skipping expensive ray vector calculations for now */ |
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static void |
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interp_pixel(COLOR con, const VIEW *vwn, int xn, int yn, double zn, |
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double pos, int xp, int yp) |
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{ |
| 152 |
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const int hres = scanlen(&imres); |
| 153 |
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RREAL ipos; |
| 154 |
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FVECT wprev, wcoor, rdir; |
| 155 |
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int np, xd, yd, nd; |
| 156 |
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COLOR cpr; |
| 157 |
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double sf, zval; |
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/* check if off image */ |
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if ((xp < 0) | (xp >= hres)) |
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return; |
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if ((yp < 0) | (yp >= numscans(&imres))) |
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return; |
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np = yp*hres + xp; /* get indexed destination */ |
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xd = (1.-pos)*xp + pos*xn + .5; |
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yd = (1.-pos)*yp + pos*yn + .5; |
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nd = yd*hres + xd; |
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/* check interpolated depth */ |
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zval = (1.-pos)*zprev[np] + pos*zn; |
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if (zval >= zbuf[nd]) |
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return; |
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copycolor(imbuf[nd], con); /* assign interpolated color */ |
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scalecolor(imbuf[nd], pos); |
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sf = (1.-pos)/exprev; |
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colr_color(cpr, imprev[np]); |
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scalecolor(cpr, sf); |
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addcolor(imbuf[nd], cpr); |
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zbuf[nd] = zval; /* assign new depth */ |
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} |
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/* Find neighbor with minimum depth from buffer */ |
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static int |
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neigh_zmin(const float *zb, int n) |
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{ |
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const int hres = scanlen(&imres); |
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const int vc = n / hres; |
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const int hc = n - vc*hres; |
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float zbest = ZGONE; |
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int nbest = 0; |
| 190 |
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if (hc > 0 && zb[n-1] < zbest) |
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zbest = zb[nbest = n-1]; |
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if (hc < hres-1 && zb[n+1] < zbest) |
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zbest = zb[nbest = n+1]; |
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if (vc > 0 && zb[n-hres] < zbest) |
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zbest = zb[nbest = n-hres]; |
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if (vc < numscans(&imres)-1 && zb[n+hres] < zbest) |
| 198 |
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return(n+hres); |
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return(nbest); |
| 200 |
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} |
| 201 |
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| 202 |
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| 203 |
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/* Fill in missing pixels from immediate neighbors */ |
| 204 |
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static void |
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fill_missing(void) |
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{ |
| 207 |
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int n, m; |
| 208 |
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| 209 |
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for (n = imres.xr*imres.yr; n--; ) |
| 210 |
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if (zbuf[n] >= .9*FHUGE && |
| 211 |
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zbuf[m = neigh_zmin(zbuf,n)] < .9*FHUGE) |
| 212 |
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copycolor(imbuf[n], imbuf[m]); |
| 213 |
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} |
| 214 |
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| 215 |
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| 216 |
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/* Load a subframe */ |
| 217 |
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static void |
| 218 |
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addframe(double fpos) |
| 219 |
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{ |
| 220 |
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COLOR backg; |
| 221 |
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char *err; |
| 222 |
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VIEW fvw; |
| 223 |
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RESOLU rs; |
| 224 |
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IMGHEAD ihead; |
| 225 |
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char fname[256]; |
| 226 |
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FILE *fpimg; |
| 227 |
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int fdzbf, fdmvo; |
| 228 |
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COLR *iscan; |
| 229 |
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float *zscan; |
| 230 |
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uint16 *mscan; |
| 231 |
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int hres, n, h; |
| 232 |
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| 233 |
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loadprev((int)fpos); /* make sure we have previous */ |
| 234 |
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fpos -= floor(fpos); |
| 235 |
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if (fpos <= .02) { /* special case */ |
| 236 |
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COLOR col; |
| 237 |
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for (n = imres.xr*imres.yr; n--; ) { |
| 238 |
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colr_color(col, imprev[n]); |
| 239 |
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addcolor(imsum[n], col); |
| 240 |
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} |
| 241 |
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return; |
| 242 |
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} |
| 243 |
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/* open input files */ |
| 244 |
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sprintf(fname, hdrspec, fnprev+1); |
| 245 |
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if ((fpimg = fopen(fname, "r")) == NULL) |
| 246 |
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goto openerr; |
| 247 |
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fvw = vwprev; |
| 248 |
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ihead.vp = &fvw; |
| 249 |
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ihead.gotview = 0; |
| 250 |
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ihead.ev = 1.; |
| 251 |
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if (getheader(fpimg, headline, &ihead) < 0) |
| 252 |
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goto readerr; |
| 253 |
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if (!ihead.gotview) { |
| 254 |
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sprintf(errmsg, "missing view in picture \"%s\"", fname); |
| 255 |
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error(USER, errmsg); |
| 256 |
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} |
| 257 |
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if ((err = setview(&fvw)) != NULL) |
| 258 |
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error(USER, err); |
| 259 |
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if (!fgetsresolu(&rs, fpimg)) |
| 260 |
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goto readerr; |
| 261 |
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if ((rs.xr != imres.xr) | (rs.yr != imres.yr)) { |
| 262 |
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sprintf(errmsg, "resolution mismatch for picture \"%s\"", fname); |
| 263 |
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error(USER, errmsg); |
| 264 |
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} |
| 265 |
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vwsum.type = fvw.type; /* average in view */ |
| 266 |
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for (n = 3; n--; ) { |
| 267 |
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vwsum.vp[n] += (1.-fpos)*vwprev.vp[n] + fpos*fvw.vp[n]; |
| 268 |
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vwsum.vdir[n] += (1.-fpos)*vwprev.vdir[n] + fpos*fvw.vdir[n]; |
| 269 |
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vwsum.vup[n] += (1.-fpos)*vwprev.vdir[n] + fpos*fvw.vdir[n]; |
| 270 |
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} |
| 271 |
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vwsum.vdist += (1.-fpos)*vwprev.vdist + fpos*fvw.vdist; |
| 272 |
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vwsum.horiz += (1.-fpos)*vwprev.horiz + fpos*fvw.horiz; |
| 273 |
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vwsum.vert += (1.-fpos)*vwprev.vert + fpos*fvw.vert; |
| 274 |
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vwsum.voff += (1.-fpos)*vwprev.voff + fpos*fvw.voff; |
| 275 |
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vwsum.hoff += (1.-fpos)*vwprev.hoff + fpos*fvw.hoff; |
| 276 |
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vwsum.vfore += (1.-fpos)*vwprev.vfore + fpos*fvw.vfore; |
| 277 |
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vwsum.vaft += (1.-fpos)*vwprev.vaft + fpos*fvw.vaft; |
| 278 |
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sprintf(fname, zbfspec, fnprev+1); |
| 279 |
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if ((fdzbf = open(fname, O_RDONLY)) < 0) |
| 280 |
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goto openerr; |
| 281 |
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sprintf(fname, mvospec, fnprev+1); |
| 282 |
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if ((fdmvo = open(fname, O_RDONLY)) < 0) |
| 283 |
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goto openerr; |
| 284 |
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setcolor(backg, .0, .0, .0); /* clear image & depth buffers */ |
| 285 |
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for (n = rs.xr*rs.yr; n--; ) { |
| 286 |
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if (zprev[n] >= .9*FHUGE && |
| 287 |
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zprev[neigh_zmin(zprev,n)] >= .9*FHUGE) |
| 288 |
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colr_color(backg, imprev[n]); |
| 289 |
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copycolor(imbuf[n], backg); |
| 290 |
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zbuf[n] = ZGONE; |
| 291 |
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} |
| 292 |
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hres = scanlen(&rs); /* process a scanline at a time */ |
| 293 |
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iscan = (COLR *)emalloc(sizeof(COLR)*hres); |
| 294 |
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zscan = (float *)emalloc(sizeof(float)*hres); |
| 295 |
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mscan = (uint16 *)emalloc(sizeof(uint16)*3*hres); |
| 296 |
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for (n = 0; n < numscans(&rs); n++) { |
| 297 |
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const double sf = 1./ihead.ev; |
| 298 |
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COLOR cval; |
| 299 |
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if (freadcolrs(iscan, hres, fpimg) < 0) |
| 300 |
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goto readerr; |
| 301 |
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if (read(fdzbf, zscan, sizeof(float)*hres) != |
| 302 |
|
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sizeof(float)*hres) |
| 303 |
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goto readerr; |
| 304 |
|
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if (read(fdmvo, mscan, sizeof(uint16)*3*hres) != |
| 305 |
|
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sizeof(uint16)*3*hres) |
| 306 |
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goto readerr; |
| 307 |
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for (h = hres; h--; ) { |
| 308 |
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if (!mscan[3*h]) |
| 309 |
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continue; /* unknown motion */ |
| 310 |
|
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colr_color(cval, iscan[h]); |
| 311 |
|
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scalecolor(cval, sf); |
| 312 |
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interp_pixel(cval, &fvw, h, n, zscan[h], fpos, |
| 313 |
|
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h + (int)mscan[3*h] - 32768, |
| 314 |
|
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n - (int)mscan[3*h+1] + 32768); |
| 315 |
|
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} |
| 316 |
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} |
| 317 |
|
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/* fill in missing pixels */ |
| 318 |
|
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fill_missing(); |
| 319 |
|
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/* add in results */ |
| 320 |
|
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for (n = imres.xr*imres.yr; n--; ) |
| 321 |
|
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addcolor(imsum[n], imbuf[n]); |
| 322 |
|
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/* clean up */ |
| 323 |
|
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free(mscan); |
| 324 |
|
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free(zscan); |
| 325 |
|
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free(iscan); |
| 326 |
|
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close(fdmvo); |
| 327 |
|
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close(fdzbf); |
| 328 |
|
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fclose(fpimg); |
| 329 |
|
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return; |
| 330 |
|
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openerr: |
| 331 |
|
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sprintf(errmsg, "cannot open input \"%s\"", fname); |
| 332 |
|
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error(SYSTEM, errmsg); |
| 333 |
|
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readerr: |
| 334 |
|
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error(SYSTEM, "error reading input file"); |
| 335 |
|
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} |
| 336 |
|
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| 337 |
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| 338 |
|
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/* Average and write our image out to the given file */ |
| 339 |
|
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static void |
| 340 |
|
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write_average(FILE *fp) |
| 341 |
|
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{ |
| 342 |
|
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const int hres = scanlen(&imres); |
| 343 |
|
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const double sf = 1./(double)nsamps; |
| 344 |
|
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const float csf = exprev*sf; |
| 345 |
|
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int n, h; |
| 346 |
|
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/* normalize view & image */ |
| 347 |
|
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for (n = 3; n--; ) { |
| 348 |
|
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vwsum.vp[n] *= sf; |
| 349 |
|
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vwsum.vdir[n] *= sf; |
| 350 |
|
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vwsum.vup[n] *= sf; |
| 351 |
|
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} |
| 352 |
|
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vwsum.vdist *= sf; |
| 353 |
|
|
vwsum.horiz *= sf; |
| 354 |
|
|
vwsum.vert *= sf; |
| 355 |
|
|
vwsum.voff *= sf; |
| 356 |
|
|
vwsum.hoff *= sf; |
| 357 |
|
|
vwsum.vfore *= sf; |
| 358 |
|
|
vwsum.vaft *= sf; |
| 359 |
|
|
for (n = imres.xr*imres.yr; n--; ) |
| 360 |
|
|
scalecolor(imsum[n], csf); |
| 361 |
|
|
/* write it out */ |
| 362 |
|
|
fputs(VIEWSTR, fp); |
| 363 |
|
|
fprintview(&vwsum, fp); |
| 364 |
|
|
fputc('\n', fp); |
| 365 |
|
|
if ((pixaspect < .98) | (pixaspect > 1.02)) |
| 366 |
|
|
fputaspect(pixaspect, fp); |
| 367 |
|
|
fputexpos(exprev, fp); |
| 368 |
|
|
if (strcmp(imfmt, PICFMT)) |
| 369 |
|
|
fputformat(imfmt, fp); |
| 370 |
|
|
fputc('\n', fp); /* end of info. header */ |
| 371 |
|
|
fputsresolu(&imres, fp); |
| 372 |
|
|
for (n = 0; n < numscans(&imres); n++) |
| 373 |
|
|
if (fwritescan(imsum + n*hres, hres, fp) < 0) |
| 374 |
|
|
error(SYSTEM, "write error on picture output"); |
| 375 |
|
|
} |
| 376 |
|
|
|
| 377 |
|
|
/* Load frame sequence and compute motion blur output */ |
| 378 |
|
|
int |
| 379 |
|
|
main(int argc, char *argv[]) |
| 380 |
|
|
{ |
| 381 |
|
|
double fstart, fend, fstep, fcur; |
| 382 |
|
|
|
| 383 |
|
|
progname = argv[0]; |
| 384 |
|
|
SET_DEFAULT_BINARY(); |
| 385 |
|
|
if (argc != 5) |
| 386 |
|
|
goto userr; |
| 387 |
|
|
/* get frame range */ |
| 388 |
|
|
switch (sscanf(argv[1], "%lf,%lf", &fstart, &fend)) { |
| 389 |
|
|
case 1: |
| 390 |
|
|
fend = fstart; |
| 391 |
|
|
break; |
| 392 |
|
|
case 2: |
| 393 |
|
|
if (fend < fstart) |
| 394 |
|
|
goto userr; |
| 395 |
|
|
break; |
| 396 |
|
|
default: |
| 397 |
|
|
goto userr; |
| 398 |
|
|
} |
| 399 |
|
|
if (fstart < 1) |
| 400 |
|
|
goto userr; |
| 401 |
|
|
hdrspec = argv[2]; |
| 402 |
|
|
zbfspec = argv[3]; |
| 403 |
|
|
mvospec = argv[4]; |
| 404 |
|
|
nsamps = (fend - fstart)*12.; |
| 405 |
|
|
if (nsamps) { |
| 406 |
|
|
fstep = (fend - fstart)/nsamps; |
| 407 |
|
|
} else { |
| 408 |
|
|
fstep = 1.; |
| 409 |
|
|
fstart -= .5; |
| 410 |
|
|
nsamps = 1; |
| 411 |
|
|
} |
| 412 |
|
|
/* load and filter each subframe */ |
| 413 |
|
|
for (fcur = fstart + .5*fstep; fcur <= fend; fcur += fstep) |
| 414 |
|
|
addframe(fcur); |
| 415 |
|
|
/* write results to stdout */ |
| 416 |
|
|
SET_FILE_BINARY(stdout); |
| 417 |
|
|
newheader("RADIANCE", stdout); |
| 418 |
|
|
printargs(argc, argv, stdout); |
| 419 |
|
|
fputnow(stdout); |
| 420 |
|
|
write_average(stdout); |
| 421 |
|
|
return(fflush(stdout) == EOF); |
| 422 |
|
|
userr: |
| 423 |
|
|
fprintf(stderr, "Usage: %s f0,f1 HDRspec ZBUFspec MVOspec\n", progname); |
| 424 |
|
|
return(1); |
| 425 |
|
|
} |
