B4J Question jOpenCV: How to use OCVCLAHE?

[b4x-de]

I'm trying to use OCVCLAHE from jOpenCV, but I can't get it to work. This is what I tried first:

    Dim cl As OCVCLAHE
    Dim sz2 As OCVSize
    sz2.Initialize2(Array As Double(7,7))
    cl.TilesGridSize = sz2
    cl.ClipLimit = 2
    cl.apply(matGray, matGray)

The error message when compiling is:

Kompiliere generierten Java Code.    Error
B4J line: 471
Dim cl As OCVCLAHE
src\b4j\example\main.java:1076: error: constructor CLAHE in class CLAHE cannot be applied to given types;
_cl = new com.b4jcv.imgproc.CLAHE();
      ^
  required: long
  found:    no arguments
  reason: actual and formal argument lists differ in length

This is what I tried next:

    Dim clahe As JavaObject
    clahe.InitializeNewInstance("com.b4jcv.imgproc.CLAHE", Null)
    clahe.SetField("TilesGridSize", sz2)
    clahe.SetField("ClipLimit", 2.0)
    clahe.RunMethod("apply", Array(matGray, matGray))

The next error message says:

java.lang.IllegalAccessException: class anywheresoftware.b4j.object.JavaObject cannot access a member of class com.b4jcv.imgproc.CLAHE with modifiers "protected"

I'm out of ideas. Can someone please help me?

Thanks, Thomas