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Diffstat (limited to 'pamarith.html')
| -rw-r--r-- | pamarith.html | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/pamarith.html b/pamarith.html index 1ef36669..528b369c 100644 --- a/pamarith.html +++ b/pamarith.html @@ -52,11 +52,12 @@ the left input image. <P><b>pamarith</b> performs the arithmetic on each pair of identically located tuples in the two input images. -<p>The arithmetic operation is in all cases fundamentally a function -from two integers to an integer. The operation is performed on two -tuples as follows. The two input images must have the same depth, or -one of them must have depth one. <b>pamarith</b> fails if one of -these is not the case. +<p>The arithmetic operation is in all cases fundamentally a function from two +integers to an integer (but see below - the functions are defined in ways that +you can effectively e.g. add real numbers). The operation is performed on two +tuples as follows. The two input images must have the same depth, or one of +them must have depth one. <b>pamarith</b> fails if one of these is not the +case. <p>If they have the same depth, <b>pamarith</b> simply carries out the arithmetic one sample at a time. I.e. if at a particular position the |