Merge pull request #17708 from shirriff:patch-1

Clarify component statistics documentation

* Change ConnectedComponentsTypes documentation

Change from "algorithm output formats" to "statistics" because it specifies types of statistics, not formats.

* Documentation: clarify component statistics

Explain that ConnectedComponentTypes selects a statistic.

modules/imgproc/include/opencv2/imgproc.hpp

@@ -387,7 +387,7 @@ enum FloodFillFlags {
 //! @addtogroup imgproc_shape
 //! @{
 
-//! connected components algorithm output formats
+//! connected components statistics
 enum ConnectedComponentsTypes {
     CC_STAT_LEFT   = 0, //!< The leftmost (x) coordinate which is the inclusive start of the bounding
                         //!< box in the horizontal direction.
@@ -3881,9 +3881,9 @@ parallel framework is enabled and if the rows of the image are at least twice th
 
 @param image the 8-bit single-channel image to be labeled
 @param labels destination labeled image
-@param stats statistics output for each label, including the background label, see below for
-available statistics. Statistics are accessed via stats(label, COLUMN) where COLUMN is one of
-#ConnectedComponentsTypes. The data type is CV_32S.
+@param stats statistics output for each label, including the background label.
+Statistics are accessed via stats(label, COLUMN) where COLUMN is one of
+#ConnectedComponentsTypes, selecting the statistic. The data type is CV_32S.
 @param centroids centroid output for each label, including the background label. Centroids are
 accessed via centroids(label, 0) for x and centroids(label, 1) for y. The data type CV_64F.
 @param connectivity 8 or 4 for 8-way or 4-way connectivity respectively
@@ -3897,9 +3897,9 @@ CV_EXPORTS_AS(connectedComponentsWithStatsWithAlgorithm) int connectedComponents
 /** @overload
 @param image the 8-bit single-channel image to be labeled
 @param labels destination labeled image
-@param stats statistics output for each label, including the background label, see below for
-available statistics. Statistics are accessed via stats(label, COLUMN) where COLUMN is one of
-#ConnectedComponentsTypes. The data type is CV_32S.
+@param stats statistics output for each label, including the background label.
+Statistics are accessed via stats(label, COLUMN) where COLUMN is one of
+#ConnectedComponentsTypes, selecting the statistic. The data type is CV_32S.
 @param centroids centroid output for each label, including the background label. Centroids are
 accessed via centroids(label, 0) for x and centroids(label, 1) for y. The data type CV_64F.
 @param connectivity 8 or 4 for 8-way or 4-way connectivity respectively