Form 0 0 400 300 Form 30 20 191 16 Connected component labeling 200 80 131 19 Sort label by size 60 50 93 81 6 connectivity 18 connexity 26 connexity 26 connexity 32 247 16 16 30 160 321 51 Qt::Horizontal 40 20 Qt::LeftToRight Keep n first greater labels Qt::Horizontal 40 20 Qt::Horizontal spinBox valueChanged(int) horizontalSlider setValue(int) 319 197 246 199 horizontalSlider valueChanged(int) spinBox setValue(int) 207 202 332 201