HDRI -statistic minimum and maximum
Posted: 2018-08-29T07:57:32-07:00
With HDRI, "-statistic minimum" and "-statistic maximum" are wrong. They are too large. (I haven't test the other "statistic" options.)
These used to work, in older v6 versions.
For example, with v7.0.7-28, Q16 HDRI:
It is also wrong with a home-compiled v6.9.9-40 Q32 HDRI:
These used to work, in older v6 versions.
For example, with v7.0.7-28, Q16 HDRI:
Code: Select all
f:\web\im>c:\ProgramFiles\ImageMagick-7.0.7-28-Q16-HDRI\magick -size 5x1 xc:gray
(50%) -define quantum:format=floating-point -depth 32 x.miff
f:\web\im>c:\ProgramFiles\ImageMagick-7.0.7-28-Q16-HDRI\magick x.miff -precision 19 txt:
# ImageMagick pixel enumeration: 5,1,65535,gray
0,0: (32767.5) #800080008000 gray(50%)
1,0: (32767.5) #800080008000 gray(50%)
2,0: (32767.5) #800080008000 gray(50%)
3,0: (32767.5) #800080008000 gray(50%)
4,0: (32767.5) #800080008000 gray(50%)
f:\web\im>c:\ProgramFiles\ImageMagick-7.0.7-28-Q16-HDRI\magick x.miff -statistic minimum 1x1 -precision 19 txt:
# ImageMagick pixel enumeration: 5,1,65535,gray
0,0: (32768) #800080008000 gray(50.000762939453125%)
1,0: (32768) #800080008000 gray(50.000762939453125%)
2,0: (32768) #800080008000 gray(50.000762939453125%)
3,0: (32768) #800080008000 gray(50.000762939453125%)
4,0: (32768) #800080008000 gray(50.000762939453125%)
f:\web\im>c:\ProgramFiles\ImageMagick-7.0.7-28-Q16-HDRI\magick x.miff -statistic maximum 1x1 -precision 19 txt:
# ImageMagick pixel enumeration: 5,1,65535,gray
0,0: (32768) #800080008000 gray(50.000762939453125%)
1,0: (32768) #800080008000 gray(50.000762939453125%)
2,0: (32768) #800080008000 gray(50.000762939453125%)
3,0: (32768) #800080008000 gray(50.000762939453125%)
4,0: (32768) #800080008000 gray(50.000762939453125%)Code: Select all
f:\web\im>C:\cygwin64\home\Alan\imdevins69940\bin\convert -size 5x1 xc:gray(50%)
-define quantum:format=floating-point -depth 32 x.miff
f:\web\im>C:\cygwin64\home\Alan\imdevins69940\bin\convert x.miff -precision 19 txt:
# ImageMagick pixel enumeration: 5,1,4294967295,gray
0,0: (2147483648,2147483648,2147483648) #800000008000000080000000 gray(50.0000
0001164153218%)
1,0: (2147483648,2147483648,2147483648) #800000008000000080000000 gray(50.0000
0001164153218%)
2,0: (2147483648,2147483648,2147483648) #800000008000000080000000 gray(50.0000
0001164153218%)
3,0: (2147483648,2147483648,2147483648) #800000008000000080000000 gray(50.0000
0001164153218%)
4,0: (2147483648,2147483648,2147483648) #800000008000000080000000 gray(50.0000
0001164153218%)
f:\web\im>C:\cygwin64\home\Alan\imdevins69940\bin\convert x.miff -statistic mini
mum 1x1 -precision 19 txt:
# ImageMagick pixel enumeration: 5,1,4294967295,gray
0,0: (2147516416,2147516416,2147516416) #800080008000800080008000 gray(50.0007
6295109483482%)
1,0: (2147516416,2147516416,2147516416) #800080008000800080008000 gray(50.0007
6295109483482%)
2,0: (2147516416,2147516416,2147516416) #800080008000800080008000 gray(50.0007
6295109483482%)
3,0: (2147516416,2147516416,2147516416) #800080008000800080008000 gray(50.0007
6295109483482%)
4,0: (2147516416,2147516416,2147516416) #800080008000800080008000 gray(50.0007
6295109483482%)
f:\web\im>C:\cygwin64\home\Alan\imdevins69940\bin\convert x.miff -statistic maxi
mum 1x1 -precision 19 txt:
# ImageMagick pixel enumeration: 5,1,4294967295,gray
0,0: (2147516416,2147516416,2147516416) #800080008000800080008000 gray(50.0007
6295109483482%)
1,0: (2147516416,2147516416,2147516416) #800080008000800080008000 gray(50.0007
6295109483482%)
2,0: (2147516416,2147516416,2147516416) #800080008000800080008000 gray(50.0007
6295109483482%)
3,0: (2147516416,2147516416,2147516416) #800080008000800080008000 gray(50.0007
6295109483482%)
4,0: (2147516416,2147516416,2147516416) #800080008000800080008000 gray(50.0007
6295109483482%)