private Vector getNormalisedFilterNames() {
        Vector filterNames = getFilterNames();
        if (filterNames == null)
            return null;

        for (int i = 0; i < filterNames.size(); i++) {
            String filterName = filterNames.elementAt(i).toString();

            if (filterName.equals("FlateDecode")
                    || filterName.equals("/Fl")
                    || filterName.equals("Fl")) {
                filterName = "FlateDecode";
            } else if (
                    filterName.equals("LZWDecode")
                            || filterName.equals("/LZW")
                            || filterName.equals("LZW")) {
                filterName = "LZWDecode";
            } else if (
                    filterName.equals("ASCII85Decode")
                            || filterName.equals("/A85")
                            || filterName.equals("A85")) {
                filterName = "ASCII85Decode";
            } else if (
                    filterName.equals("ASCIIHexDecode")
                            || filterName.equals("/AHx")
                            || filterName.equals("AHx")) {
                filterName = "ASCIIHexDecode";
            } else if (
                    filterName.equals("RunLengthDecode")
                            || filterName.equals("/RL")
                            || filterName.equals("RL")) {
                filterName = "RunLengthDecode";
            } else if (
                    filterName.equals("CCITTFaxDecode")
                            || filterName.equals("/CCF")
                            || filterName.equals("CCF")) {
                filterName = "CCITTFaxDecode";
            } else if (
                    filterName.equals("DCTDecode")
                            || filterName.equals("/DCT")
                            || filterName.equals("DCT")) {
                filterName = "DCTDecode";
            }
            // There aren't short names for JBIG2Decode or JPXDecode
            filterNames.set(i, filterName);
        }
        return filterNames;
    }