Intel IPP status 39 (ippStsEvenMedianWeight): meaning and diagnosis

Status / error code:		Category:

Constant name:
Source:		Operating System:
Description: Intel IPP adjusted an even weighted-median parameter to an odd value and completed with a warning.

Could be also:
Constant	Type	OS
ERROR_HANDLE_DISK_FULL	Win32 error	Windows
KERN_LOCK_UNSTABLE	Kern return	Mac
ENOTEMPTY	errno	Linux
EDESTADDRREQ	errno	Mac
EL3HLT	errno	Solaris
ENOLCK	errno	Windows
RDR_FILE_SYSTEM	BugCheck Code	Windows

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ippStsSymKernelExpected	ippStsWrongIntersectVOI

ippStsEvenMedianWeight

The requested rank was changed

Weighted median filtering selects a median after samples have been assigned multiplicities or weights. The relevant IPP primitive requires an odd weight parameter and replaces an even value with an odd one. The output is therefore computed with an effective parameter different from the caller's request.

This matters around edges and isolated color outliers, where changing one replicated weight can change which sample occupies the median rank.

Diagnostic checklist

Log the requested weight and the effective value defined by the exact function.
Validate that initialization and execution use the same weight.
Check whether the caller confused a radius, mask size, and sample weight.
Do not suppress the warning when deterministic equivalence with another implementation is required.

References

Intel IPP FilterMedianColor reference · Intel IPP error reporting · OpenCV image filtering overview

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