> `PIXTYPE` is equal to `T`

Won't fix. I agree, that current naming system is very bad, but `T` will not help significantly. Same problem is in many other kernels.

> `convertToDT` is equal to `convertToT`

Won't fix. Same reason.

> `convertToWT`, `convertToDT` are unnecessary for `INTER_NEAREST`

Won't fix. IMHO, Code looks over complicated with enabling/disabling of "useful" "optional" definitions.