b.setpixel(0, 1, (.5, .5, .5, 1))
b.setpixel(1, 1, (1, 1, 1, 1))
dumpimg(b, msg="linear src=")
r = ImageBufAlgo.colorconvert(b, "Linear", "sRGB")
dumpimg(r, msg="to srgb =")
r = ImageBufAlgo.colorconvert(r, "sRGB", "Linear")
dumpimg(r, msg="back to linear =")
# Just to test, make a matrix that halves red, doubles green,
# adds 0.1 to blue.
M = (0.5, 0, 0, 0, 0, 2, 0, 0, 0, 0, 1, 0, 0, 0, 0.1, 1)
r = ImageBufAlgo.colormatrixtransform(b, M)
dumpimg(r, msg="after *M =")
# computePixelStats
b = ImageBuf(OIIO_TESTSUITE_ROOT + "/oiiotool/src/tahoe-small.tif")
stats = ImageBufAlgo.computePixelStats(b)
print("Stats for tahoe-small.tif:")
print(" min = ", stats.min)
print(" max = ", stats.max)
print(" avg = ", stats.avg)
print(" stddev = ", stats.stddev)
print(" nancount = ", stats.nancount)
print(" infcount = ", stats.infcount)
print(" finitecount = ", stats.finitecount)
compresults = ImageBufAlgo.compare(ImageBuf("flip.tif"),
ImageBuf("flop.tif"), 1.0e-6, 1.0e-6)
print("Comparison: of flip.tif and flop.tif")
print(" mean = %.5g" % compresults.meanerror)
print(" rms = %.5g" % compresults.rms_error)
print(" PSNR = %.5g" % compresults.PSNR)
write (b, "unpremult.tif")
ImageBufAlgo.premult (b, b)
write (b, "premult.tif")
b = ImageBuf ("../oiiotool/src/tahoe-small.tif")
ImageBufAlgo.rangecompress (b, b)
write (b, "rangecompress.tif", oiio.UINT8)
ImageBufAlgo.rangeexpand (b, b)
write (b, "rangeexpand.tif", oiio.UINT8)
# FIXME - colorconvert, ociolook need tests
# computePixelStats
b = ImageBuf ("../oiiotool/src/tahoe-small.tif")
stats = oiio.PixelStats()
ImageBufAlgo.computePixelStats (b, stats)
print ("Stats for tahoe-small.tif:")
print " min = ", stats.min
print " max = ", stats.max
print " avg = ", stats.avg
print " stddev = ", stats.stddev
print " nancount = ", stats.nancount
print " infcount = ", stats.infcount
print " finitecount = ", stats.finitecount
compresults = oiio.CompareResults()
ImageBufAlgo.compare (ImageBuf("flip.tif"), ImageBuf("flop.tif"),
1.0e-6, 1.0e-6, compresults)
print "Comparison: of flip.tif and flop.tif"
print " mean = %.5g" % compresults.meanerror
print " rms = %.5g" % compresults.rms_error
write(b, "unpremult.tif")
ImageBufAlgo.premult(b, b)
write(b, "premult.tif")
b = ImageBuf("../oiiotool/src/tahoe-small.tif")
ImageBufAlgo.rangecompress(b, b)
write(b, "rangecompress.tif", oiio.UINT8)
ImageBufAlgo.rangeexpand(b, b)
write(b, "rangeexpand.tif", oiio.UINT8)
# FIXME - colorconvert, ociolook need tests
# computePixelStats
b = ImageBuf("../oiiotool/src/tahoe-small.tif")
stats = oiio.PixelStats()
ImageBufAlgo.computePixelStats(b, stats)
print("Stats for tahoe-small.tif:")
print(" min = ", stats.min)
print(" max = ", stats.max)
print(" avg = ", stats.avg)
print(" stddev = ", stats.stddev)
print(" nancount = ", stats.nancount)
print(" infcount = ", stats.infcount)
print(" finitecount = ", stats.finitecount)
compresults = oiio.CompareResults()
ImageBufAlgo.compare(ImageBuf("flip.tif"), ImageBuf("flop.tif"), 1.0e-6,
1.0e-6, compresults)
print("Comparison: of flip.tif and flop.tif")
print(" mean = %.5g" % compresults.meanerror)
print(" rms = %.5g" % compresults.rms_error)
b = ImageBufAlgo.contrast_remap (tahoetiny, min=0.1, max=0.75)
write (b, "contrast-shrink.tif")
b = ImageBufAlgo.contrast_remap (tahoetiny, scontrast=5.0)
write (b, "contrast-sigmoid5.tif")
b = ImageBuf ("../oiiotool/src/tahoe-small.tif")
b = ImageBufAlgo.rangecompress (b)
write (b, "rangecompress.tif", oiio.UINT8)
b = ImageBufAlgo.rangeexpand (b)
write (b, "rangeexpand.tif", oiio.UINT8)
# FIXME - colorconvert, ociolook need tests
# computePixelStats
b = ImageBuf ("../oiiotool/src/tahoe-small.tif")
stats = ImageBufAlgo.computePixelStats (b)
print ("Stats for tahoe-small.tif:")
print (" min = ", stats.min)
print (" max = ", stats.max)
print (" avg = ", stats.avg)
print (" stddev = ", stats.stddev)
print (" nancount = ", stats.nancount)
print (" infcount = ", stats.infcount)
print (" finitecount = ", stats.finitecount)
compresults = ImageBufAlgo.compare (ImageBuf("flip.tif"), ImageBuf("flop.tif"),
1.0e-6, 1.0e-6)
print ("Comparison: of flip.tif and flop.tif")
print (" mean = %.5g" % compresults.meanerror)
print (" rms = %.5g" % compresults.rms_error)
print (" PSNR = %.5g" % compresults.PSNR)
