267         pixZero(pixim, &allfg);  in pixBackgroundNorm()
388         pixZero(pixim, &allfg);  in pixBackgroundNormMorph()
507         pixZero(pixim, &allfg);  in pixBackgroundNormGrayArray()
584         pixZero(pixim, &allfg);  in pixBackgroundNormRGBArrays()
654         pixZero(pixim, &allfg);  in pixBackgroundNormGrayArrayMorph()
718         pixZero(pixim, &allfg);  in pixBackgroundNormRGBArraysMorph()
803         pixZero(piximi, &empty);  in pixGetBackgroundGrayMap()
807         pixZero(pixim, &empty);  in pixGetBackgroundGrayMap()
982         pixZero(piximi, &empty);  in pixGetBackgroundRGBMap()
986         pixZero(pixim, &empty);  in pixGetBackgroundRGBMap()
1147         pixZero(pixim, &empty);  in pixGetBackgroundGrayMapMorph()
1151         pixZero(pixim, &empty);  in pixGetBackgroundGrayMapMorph()
1247         pixZero(pixim, &empty);  in pixGetBackgroundRGBMapMorph()
1251         pixZero(pixim, &empty);  in pixGetBackgroundRGBMapMorph()
1553     pixZero(pixm, &empty);  in pixSmoothConnectedRegions()
1655         pixZero(piximi, &empty);
1659         pixZero(pixim, &empty);