submat            810 modules/core/misc/java/src/java/core+Mat.java     public Mat submat(int rowStart, int rowEnd, int colStart, int colEnd)
submat            823 modules/core/misc/java/src/java/core+Mat.java     public Mat submat(Range rowRange, Range colRange)
submat            836 modules/core/misc/java/src/java/core+Mat.java     public Mat submat(Rect roi)