imageProcessing: guard OpenCV-dependent filters behind ALICEVISION_HA…#2090
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servantftransperfect merged 3 commits intodevelopfrom Mar 25, 2026
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Co-authored-by: Fabien Castan <fabcastan@gmail.com>
…Filter OpenCV checks The `#if ALICEVISION_HAVE_OPENCV` guards were incorrectly placed *before* the `if (pParams.*.enabled)` runtime checks, causing the entire block (including the enabled-check) to be silently skipped at compile time when OpenCV is absent. - Move the preprocessor guard *inside* the runtime `if` block for bilateralFilter and nlmFilter, so the enabled-check is always compiled and evaluated - Add an `#else` branch for nlmFilter that logs an explicit error when OpenCV is unavailable and the filter is requested, instead of silently bypassing it
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Summary
Guard the registration of OpenCV-dependent image processing steps behind the
ALICEVISION_HAVE_OPENCVcompile-time flag.Motivation
Three filter steps —
BilateralFilter,ClaheFilter, andNlmFilter— rely on OpenCV internally. Without this guard, any build configuration that does not include OpenCV will fail at compile time whensetupSteps()tries to instantiate these classes.Changes
BilateralFilterProcessandClaheFilterProcessregistration under#if ALICEVISION_IS_DEFINED(ALICEVISION_HAVE_OPENCV)inmain_imageProcessing.cpp.NlmFilterProcessregistration under the same guard.