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Merge pull request #16001 from alalek:backport_15995

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Alexander Alekhin
2019-11-26 18:35:28 +00:00
parent 17dfae77af af997529a1
commit 5af747c6fd
6 changed files with 9 additions and 9 deletions
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doc/tutorials/imgproc/random_generator_and_text/random_generator_and_text.markdown
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@@ -210,12 +210,12 @@ Explanation
@code{.cpp}
image2 = image - Scalar::all(i)
@endcode
So, **image2** is the substraction of **image** and **Scalar::all(i)**. In fact, what happens
here is that every pixel of **image2** will be the result of substracting every pixel of
So, **image2** is the subtraction of **image** and **Scalar::all(i)**. In fact, what happens
here is that every pixel of **image2** will be the result of subtracting every pixel of
**image** minus the value of **i** (remember that for each pixel we are considering three values
such as R, G and B, so each of them will be affected)
Also remember that the substraction operation *always* performs internally a **saturate**
Also remember that the subtraction operation *always* performs internally a **saturate**
operation, which means that the result obtained will always be inside the allowed range (no
negative and between 0 and 255 for our example).