feat(enhanced-vision): implement BilateralFilter kernel#37
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…D + 3D, all borders) Implements the bilateral filter kernel for OpenVX conformance: - Full port of CTS reference algorithm to Rust in vxu_impl.rs - Supports U8 and Q78/INT16 data types - Supports 2D and 3D tensors (proper channel handling) - All border modes: Replicate, Constant, Undefined - Fixed i16 overflow in range computation - Fixed vxCopyTensorPatch to use element-size based copy - Fixed vxuBilateralFilter to read context immediate border attribute - Added VX_CONTEXT_MAX_TENSOR_DIMS query support - Registered kernel in dispatch and C API All 361 BilateralFilter tests now pass (100%). Enhanced-vision CI job updated to include BilateralFilter.* (467 tests).
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Summary
Implements the BilateralFilter kernel for the OpenVX Enhanced Vision feature set.
Changes
vxu_bilateral_filter_implinopenvx-core/src/vxu_impl.rs— spatial + range Gaussian filter for U8 and S16 (Q78) tensorsvxBilateralFilterNode/vxuBilateralFilterinopenvx-core/src/unified_c_api.rs— node constructor + immediate-mode wrapperorg.khronos.openvx.bilateral_filter(enum 0x38, 5 params) inopenvx-core/src/c_api.rsopenvx-core/src/unified_c_api.rsread_scalar_i32/read_scalar_f32helper fns for scalar reading in dispatchTesting
cargo build✅ compiles clean (12 pre-existing warnings only)cargo test✅ no regressions (pre-existing warp_affine failure unrelated)Coverage impact
vxBilateralFilterNode/vxuBilateralFilter— previouslyev_node_stub!/ev_vxu_stub!returning NULL / NOT_IMPLEMENTEDOpenVX-cts/test_conformance/test_bilateralfilter.cPart of P3 Enhanced Vision coverage.