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rustVX Development Roadmap

Current Status (March 2026)

Proof of Concept Complete

  • ✅ Core framework (context, graph, references)
  • ✅ C API bindings (32 functions)
  • ✅ Data objects (Image, Array, Scalar, etc.)
  • ✅ Vision kernels with real algorithms
  • ⚠️ ~10% API coverage (~32/300 functions)

Phase 1: Complete Core API (Weeks 1-3)

Data Object APIs

  • vxCreateImage, vxCreateVirtualImage
  • vxQueryImage, vxSetImageAttribute
  • vxMapImagePatch, vxUnmapImagePatch
  • vxCreateImageFromHandle
  • vxCreateScalar, vxQueryScalar
  • vxCreateArray, vxAddArrayItems, vxTruncateArray
  • vxCreateConvolution, vxCopyConvolutionCoefficients
  • vxCreateMatrix, vxCopyMatrix
  • vxCreateLUT, vxCopyLUT
  • vxCreateThreshold, vxSetThresholdAttribute
  • vxCreateDistribution
  • vxCreateRemap
  • vxCreateObjectArray, vxGetObjectArrayItem
  • vxCreatePyramid, vxGetPyramidLevel

Graph/Node APIs

  • vxQueryNode, vxSetNodeAttribute
  • vxReleaseNode, vxRemoveNode
  • vxAssignNodeCallback
  • vxCreateGenericNode

Kernel APIs

  • vxLoadKernels, vxUnloadKernels
  • vxGetKernelByName, vxGetKernelByEnum
  • vxQueryKernel
  • vxGetKernelParameterByIndex

Reference Management

  • vxRetainReference
  • vxGetStatus
  • vxGetContext

Target: 150+ API functions (50% coverage)

Phase 2: Vision Algorithm Optimization (Weeks 4-6)

SIMD Optimizations

  • SSE2/AVX2 for x86_64
  • NEON for ARM/AArch64
  • Parallel image processing with rayon
  • Separable filter optimization

Algorithm Enhancements

  • Optimized Harris corners (structure tensor)
  • FAST9/12 with high-speed rejection
  • Integral image with O(1) rectangle queries
  • Mean-shift tracking
  • Hough line detection

Border Handling

  • Complete all border modes
  • Edge case optimization

Target: Production-ready performance

Phase 3: CTS Conformance (Weeks 7-9)

Integration

  • Obtain official Khronos headers
  • Complete CTS build
  • Fix link errors

Testing

  • Run Base Feature tests
  • Run Vision Conformance tests
  • Debug and fix failures
  • Achieve passing conformance

Target: Khronos Certified Vision Conformance

Phase 4: Extensions (Weeks 10+)

Optional Feature Sets

  • Enhanced Vision Feature Set
  • Binary Image Feature Set
  • Neural Network extension (vx_nn)

Platform Support

  • GPU acceleration (CUDA/OpenCL/Vulkan)
  • Embedded platforms (ARM Cortex, RISC-V)

Success Criteria

  1. API Completeness: 100% of OpenVX 1.3.1 C API
  2. Vision Conformance: Pass Khronos CTS
  3. Performance: Within 20% of reference implementations
  4. Memory Safety: No unsafe code paths (Rust guarantee)

Contributing

See CONTRIBUTING.md for how to help implement specific APIs or algorithms.