func (phi *ConvEach) Apply(x *rimg64.Multi) (*rimg64.Multi, error) {
channels := x.Channels * len(phi.Filters.Filters)
field := image.Pt(phi.Filters.Width, phi.Filters.Height)
size := slide.ValidSize(x.Size(), field)
y := rimg64.NewMulti(size.X, size.Y, channels)
var n int
for i := 0; i < x.Channels; i++ {
// Convolve each channel of the input with the bank.
yi, err := slide.CorrBankBLAS(x.Channel(i), phi.Filters)
if err != nil {
return nil, err
}
for j := 0; j < yi.Channels; j++ {
// Copy the channels into the output.
y.SetChannel(n, yi.Channel(j))
n++
}
}
return y, nil
}