Method alloc

opencv/src/main/java/org/opencv/core/MatOfByte.java:43–46

(int elemNumber)

    }

    public void alloc(int elemNumber) {
        if(elemNumber>0)
            super.create(elemNumber, 1, CvType.makeType(_depth, _channels));
    }

    public void fromArray(byte...a) {
        if(a==null || a.length==0)