# Last edited on 2001-12-16 12:40:03 by stolfi

# Converts photos of fragment piles into ".eps" format.

IMG = iab-7
ROT = -3
CLIP = 61 162 1112 816
SCALE = 0.75
NORM = -bpercent 2 -wpercent 14
GAMMAOUT = 1.0

# IMG = iab-1
# ROT = -4
# CLIP = 28 83 290 312
# SCALE = 1.0
# NORM = -bpercent 1 -wpercent 8
# GAMMAOUT = 1.0

# IMG = iab-2-x
# ROT = 0
# CLIP = 35 10 680 500
# SCALE = 1
# NORM = -bpercent 1 -wpercent 8
# GAMMAOUT = 1.0

# IMG = brmus-1
# ROT = -33
# CLIP = 330 695 1268 402 
# SCALE = 0.5
# NORM = -bpercent 1 -wpercent 8
# GAMMAOUT = 1.0

.PHONY: all clean

all: ${IMG}-norm.eps

clean:
	/bin/rm -f ${IMG}-*.ppm ${IMG}-*.pgm ${IMG}-*.eps

# Convert from png to ppm, cut, convert to grayscale:

${IMG}-rot.pgm: ${IMG}.png
	convert ${IMG}.png /tmp/${IMG}.ppm
	cat /tmp/${IMG}.ppm \
          | pnmrotate ${ROT} \
          > ${IMG}-rot.ppm
          
${IMG}-cut.pgm: ${IMG}-rot.pgm
	cat ${IMG}-rot.ppm \
          | pnmcut ${CLIP} \
          | pnmgamma 1.2 \
          | ppmtopgm \
          | pnmscale ${SCALE} \
          | pnmdepth 255 \
          > ${IMG}-cut.pgm
	/bin/rm -f /tmp/${IMG}.ppm
	xv ${IMG}-cut.pgm ${IMG}*.p?m
 
# Generate a smoothed version of the image:

${IMG}-smooth.pgm: ${IMG}-cut.pgm
	cat ${IMG}-cut.pgm \
	  | pnmsmooth | pnmsmooth | pnmsmooth | pnmsmooth | pnmsmooth \
	  > /tmp/${IMG}-s.pgm
	cat /tmp/${IMG}-s.pgm \
	  | pnmsmooth | pnmsmooth | pnmsmooth | pnmsmooth | pnmsmooth \
	  > /tmp/${IMG}-ss.pgm
	cat /tmp/${IMG}-ss.pgm \
	  | pnmsmooth | pnmsmooth | pnmsmooth | pnmsmooth | pnmsmooth \
	  > /tmp/${IMG}-sss.pgm
	cat /tmp/${IMG}-sss.pgm \
	  | pnmsmooth | pnmsmooth | pnmsmooth | pnmsmooth | pnmsmooth \
	  > ${IMG}-smooth.pgm
	xv ${IMG}-smooth.pgm ${IMG}*.p?m

# Subtract smmothed image from original, normalize:

${IMG}-norm.pgm: ${IMG}-cut.pgm ${IMG}-smooth.pgm
	pnmxarith -mix 3.0 -2.0 ${IMG}-cut.pgm ${IMG}-smooth.pgm \
	  | pgmnorm ${NORM} \
	  | pnmdepth 255 \
	  > ${IMG}-norm.pgm
	xv ${IMG}-norm.pgm ${IMG}*.p?m

# Convert to Postscript:

${IMG}-norm.eps: ${IMG}-norm.pgm
	cat ${IMG}-norm.pgm \
	  | pnmgamma ${GAMMAOUT} \
          | pnmdepth 255 \
          | pnmtopsx -noturn \
	  > ${IMG}-norm.eps
	ghostview ${IMG}-norm.eps

# ======================================================================
# Special rules to remove highlights from iab-2.png:

iab-2.ppm: iab-2.png
	convert iab-2.png ppm:- \
          | pnmgamma 0.85 \
          | pnmscale 0.5 \
          | pnmdepth 255 \
          > iab-2.ppm
	xv iab-2.ppm

iab-2-x.ppm: iab-2.ppm
	remove-highlights 77 65 43 0.5 \
          < iab-2.ppm \
          > iab-2-x.ppm \
        || { /bin/rm -f iab-2-x.ppm ; exit 1; }
	xv iab-2-x.ppm

iab-2-x.png: iab-2-x.ppm
	convert iab-2-x.ppm iab-2-x.png