filter: more comment fixing

filter/knn.go

@@ -51,7 +51,7 @@ type KNN struct {
 	hfCount int                           // Counter for the hold array.
 }
 
-// NewKNN returns a pointer to a new KNNFilter.
+// NewKNN returns a pointer to a new KNN filter struct.
 func NewKNN(dst io.WriteCloser, area, threshold float64, history, kernelSize int, debug bool, hf int) *KNN {
 	bs := gocv.NewBackgroundSubtractorKNNWithParams(history, threshold, false)
 	k := gocv.GetStructuringElement(gocv.MorphRect, image.Pt(kernelSize, kernelSize))

filter/vfps.go

@@ -40,7 +40,7 @@ type VariableFPS struct {
 	count  uint
 }
 
-// NewVariableFPS returns a pointer to a new VariableFPSFilter struct.
+// NewVariableFPS returns a pointer to a new VariableFPS filter struct.
 func NewVariableFPS(dst io.WriteCloser, minFPS float64, filter Filter) *VariableFPS {
 	frames := uint(25 / minFPS)
 	return &VariableFPS{filter, dst, frames, 0}