1962
1978
oplist["threshabs"]=imageop("threshabs",1,1,op_threshabs);
1963
1979
oplist["cutoff"]=imageop("cutoff",1,1,op_cutoff);
1964
1980
oplist["invert"]=imageop("invert",0,0,op_invert);
1981
oplist["abs"]=imageop("abs",0,0,op_abs);
1982
oplist["signflip"]=imageop("signflip",0,0,op_signflip);
1965
1983
oplist["splitregions"]=imageop("splitregions",1,1,op_splitregions);
1967
1985
oplist["tr"]=imageop("tr",1,1,op_tr);