Generic filters are a catch-all for filters which can't be placed elsewhere.
This category describes the following filters:
9.2절. “Convolution Matrix”
9.3절. “Distance Map”
9.4절. “GEGL Operation”
9.6절. “Normal Map”
9.7절. “Dilate”
9.8절. “Erode”
9.5절. “GEGL Graph”
