write(b, "contrast-sigmoid5.tif")
b = ImageBuf(OIIO_TESTSUITE_ROOT + "/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
print("\nTesting color conversions:")
b = make_constimage(2, 2, 4, oiio.FLOAT, (0, 0, 0, 1))
b.setpixel(1, 0, (.25, .25, .25, 1))
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)
def convertColor(srcBuffer, fromColor="linear", toColor="sRGB"):
Dst = ImageBuf()
ImageBufAlgo.colorconvert(Dst, srcBuffer, fromColor, toColor)
threadResult.put(Dst)
return Dst
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
print ("\nTesting color conversions:")
b = make_constimage (2,2,4,oiio.FLOAT,(0,0,0,1))
b.setpixel(1, 0, (.25,.25,.25,1))
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 ("../oiiotool/src/tahoe-small.tif")
stats = ImageBufAlgo.computePixelStats (b)
