| NColor | |
| NContourHelper | Collection of functions for contour processing |
| NCornerSubpixel | Subpixel refinement of corner points |
| NExtrinsicParameterCalculator | |
| NExtrinsicParameterCalculatorCV | |
| NImageAccessCV | Loading of images using HighGUI from OpenCV |
| NImageProcessor | Central namespace offering various image processing routines and functions |
| NImageProcessorCV | Deprecated |
| NIplImageAdaptor | Conversion between CByteImage (IVT) and IplImage (OpenCV) |
| NLinearAlgebra | Mathematic functions operating on the data types CFloatMatrix, CFloatVector, CDoubleMatrix, and CDoubleVector |
| NLinearAlgebraCV | Obsolete (encapsulated OpenCV calls). Use LinearAlgebra instead |
| NMath2d | Efficient mathematic functions operating on the data types Vec2d and Mat2d |
| NMath3d | Efficient mathematic functions operating on the data types Vec3d, Mat3d, Transformation3d, and Quaternion |
| NNormalizer | Normalization of 1D data |
| NPOSIT | Implementation of the (POSIT) algorithm |
| NPrimitivesDrawer | Functions for drawing 2D primitives into images |
| NPrimitivesDrawerCV | Functions for drawing 2D primitives into a CByteImage using OpenCV |
| NQuicksort | |
| NRANSAC | Implementation of the RANSAC algorithm for specific applications/models |
| NStereoCalibrationCV | Computation of the rectification parameters for a given instance of CStereoCalibration |
| NThreading | Namespace offering helpers and types useful for multithreading |