From 0470bb0e2958ae9725465fe6ab2767f19c5009fa Mon Sep 17 00:00:00 2001 From: RJ2 Date: Tue, 18 Mar 2014 08:59:53 +0100 Subject: [PATCH] I have changed one sentence in tutorial, making it more understandable --- doc/tutorials/core/how_to_scan_images/how_to_scan_images.rst | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/doc/tutorials/core/how_to_scan_images/how_to_scan_images.rst b/doc/tutorials/core/how_to_scan_images/how_to_scan_images.rst index ef0f8640ca..b6a18fee88 100644 --- a/doc/tutorials/core/how_to_scan_images/how_to_scan_images.rst +++ b/doc/tutorials/core/how_to_scan_images/how_to_scan_images.rst @@ -18,7 +18,7 @@ We'll seek answers for the following questions: Our test case ============= -Let us consider a simple color reduction method. Using the unsigned char C and C++ type for matrix item storing a channel of pixel may have up to 256 different values. For a three channel image this can allow the formation of way too many colors (16 million to be exact). Working with so many color shades may give a heavy blow to our algorithm performance. However, sometimes it is enough to work with a lot less of them to get the same final result. +Let us consider a simple color reduction method. By using the unsigned char C and C++ type for matrix item storing, a channel of pixel may have up to 256 different values. For a three channel image this can allow the formation of way too many colors (16 million to be exact). Working with so many color shades may give a heavy blow to our algorithm performance. However, sometimes it is enough to work with a lot less of them to get the same final result. In this cases it's common that we make a *color space reduction*. This means that we divide the color space current value with a new input value to end up with fewer colors. For instance every value between zero and nine takes the new value zero, every value between ten and nineteen the value ten and so on.