Search found 21 matches

by robert_a
2014-09-15T08:45:35-07:00
Forum: Developers
Topic: Different behaviour between installation versions
Replies: 24
Views: 14212

Re: Different behaviour between installation versions

Note, also I beleive you are not correct about the division behavior, it seems clear that ImageMagick's conversion from floating point to another type assumes that the values are in the range of 0-1 and maps this range to the full range of the output type. It seems you are thinking of 32 bit integer...
by robert_a
2014-09-15T08:40:22-07:00
Forum: Developers
Topic: Different behaviour between installation versions
Replies: 24
Views: 14212

Re: Different behaviour between installation versions

Not quite, the values are float not 32bit Int , so the value is 0.000000 up to 65534.999999 out of the whole range of 32bit Floating point values. That is because they result from a calculation in which it is desirable to carry the extra precision. However, another image processing step I want to tr...
by robert_a
2014-09-15T04:37:20-07:00
Forum: Developers
Topic: Different behaviour between installation versions
Replies: 24
Views: 14212

Different behaviour between installation versions

HI, I have a command that was working to give the correct ressult, I have compiled the current version of ImageMagick and now it gives a wrong result. The command converts a 32-bit floating point TIFF in which the values lie in the range 0-65535 into a 16-bit TIFF in which the values are the truncat...
by robert_a
2012-03-06T05:32:41-07:00
Forum: Users
Topic: Up-to-Date Meaning of Q32 and so forth
Replies: 6
Views: 12956

Re: Up-to-Date Meaning of Q32 and so forth

Thanks, Fred, Anthony: Anthony's link is really exactly what I was looking for. I'm sorry I failed to locate it on my own. In fact, my 32-bit floating-point TIFFS contain negative values, and contain small numbers of extreme values, what I am initially trying to do is to launch a command line proces...
by robert_a
2012-03-05T10:13:16-07:00
Forum: Users
Topic: Up-to-Date Meaning of Q32 and so forth
Replies: 6
Views: 12956

Re: Up-to-Date Meaning of Q32 and so forth

Thanks for any help !
Regards
Robert
by robert_a
2012-03-05T10:12:55-07:00
Forum: Users
Topic: Up-to-Date Meaning of Q32 and so forth
Replies: 6
Views: 12956

Up-to-Date Meaning of Q32 and so forth

Hi, I have a large number of 32-bit single-channel TIFFS to process. I found that it doesn't work with the currently installed ImageMagick, I can't get output of e.g. cropping the 32-bit tiff , in 32-bit tiff format. Upon deciding to obtain an uptodate ImageMagick, and upon googling this issue, I fi...