
Key: VSIPL1617

Legacy Issue Number: 18212

Status: open

Source: dpdx.net ( Brooks Moses)

Summary:
The vsip_symmetry enumerator is used in a number of places, and in
{odd,even}
general the VSIP_SYM_EVEN_LEN_* values are defined as "(Even) Symmetric,length".
However, in the text there are sporadic mentions that imply that
symmetric here really means conjugatesymmetric; for instance, see the
bottom of page 567 ("The filter kernel can be even (conjugate) symmetric
or nonsymmetric.") and the definition of the "kernel" argument to
vsip_*fir_create on page 612. This needs to be much more clearly and
consistently stated.Regardless of whether the kernel is defined as symmetric or
conjugatesymmetric, the method for constructing the complete kernel
from the input in the symmetric cases is not defined. Is the input the
first half of the kernel, or the second half? Is the first half
conjugated, or the second half? This needs to be clearly specified. 
Reported: VSIPL++ 1.2 — Tue, 23 Oct 2012 04:00 GMT

Updated: Fri, 6 Mar 2015 20:57 GMT
VSIPL16 — Meaning of vsip_symmetry enum values inconsistent
 Key: VSIPL1617
 OMG Task Force: Vector Image Signal Processing Specifications 1.6 RTF