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authorNick White <git@njw.name>2020-08-03 17:20:58 +0100
committerNick White <git@njw.name>2020-08-03 17:20:58 +0100
commit30b54ffce25c86f3e1c58076f39ef9ace53b0274 (patch)
tree83b8ebf7a5bb516f12ff55a2c102137933aecdfc
parent26a5872f3470f00d438b4f9d720b712ef55303c1 (diff)
Improve documentationv0.5.0
-rw-r--r--integralimg.go13
1 files changed, 10 insertions, 3 deletions
diff --git a/integralimg.go b/integralimg.go
index 6cf3a25..d4d25f1 100644
--- a/integralimg.go
+++ b/integralimg.go
@@ -7,9 +7,16 @@
// sum of pixels to the left and above each pixel, which can make
// several common image processing operations much faster.
//
-// The Sum(), Mean() and MeanStdDev() functions provided for the
-// integral versions of Images significantly speed up many common
-// image processing operations.
+// A lot of image processing operations rely on many calculations
+// of the sum or mean of a set of pixels. As these have been
+// precalculated for an integral Image, these calculations are
+// much faster. Image.Sum() and Image.Mean() functions are provided
+// by this package to take advantage of this.
+//
+// Another common requirement is standard deviation over an area
+// of an image. This can be calculated by creating an integral
+// Image and squared integral Image (SqImage) for a base image, and
+// passing them to the MeanStdDev() function provided.
package integralimg
import (