Ocean Computer Vision (CV) Library

The Ocean CV Library provides basic Computer Vision functionalities. More...

Collaboration diagram for Ocean Computer Vision (CV) Library:

Modules
	Ocean CV Advanced Library
	The Ocean CV Advanced Library provides several different computer vision feature detection functionalities.
	Ocean CV Depth Library
	The Ocean CV Depth Library provides functionalities for depth estimation, stereo rectification etc.
	Ocean CV Detector Library
	The Ocean CV Dectector Library provides several different computer vision feature detection functionalities.
	Ocean CV Fonts Library
	The Ocean CV Fonts Library provides font functionalities like drawing/rendering text.
	Ocean CV Segmentation Library
	The Ocean CV Segmentation Library provides all computer vision segmentation, contour and masking functionalities.
	Ocean CV Synthesis Library
	The Ocean CV Synthesis Library provides all computer vision synthesis functionalities.

Data Structures
class	Ocean::CV::Bresenham
	This class implements bresenham line algorithms. More...
class	Ocean::CV::Canvas
	This class implements canvas functions. More...
class	Ocean::CV::CVUtilities
	This class implements Computer Vision utility functions. More...
class	Ocean::CV::EigenUtilities
	This class provides several helper classes allowing to convert between Ocean data structures and Eigen data structures. More...
class	Ocean::CV::FrameBlender
	This class implements a frame blender using an alpha channel to blend frames. More...
class	Ocean::CV::FrameChannels
	This class implements frame channel conversion, transformation and extraction functions. More...
class	Ocean::CV::FrameConverter
	This is the base class for all frame converter classes. More...
class	Ocean::CV::FrameConverterABGR32
	This class implements functions to convert frames with ABGR 32 bit pixel format. More...
class	Ocean::CV::FrameConverterARGB32
	This class implements functions to convert frames with ARGB 32 bit pixel format. More...
class	Ocean::CV::FrameConverterBGR24
	This class provides functions to convert frames with BGR pixel format. More...
class	Ocean::CV::FrameConverterBGR32
	This class provides functions to convert or to change frames with RGB pixel format. More...
class	Ocean::CV::FrameConverterBGR565
	This class provides functions to convert or to change frames with BGR 565 pixel format. More...
class	Ocean::CV::FrameConverterBGRA32
	This class provides functions to convert frames with BGRA pixel format. More...
class	Ocean::CV::FrameConverterColorMap
	This class provides functions to convert frames based on a color map. More...
class	Ocean::CV::FrameConverterRGB24
	This class provides functions to convert or to change frames with RGB pixel format. More...
class	Ocean::CV::FrameConverterRGB32
	This class provides functions to convert or to change frames with RGB pixel format. More...
class	Ocean::CV::FrameConverterRGB565
	This class provides functions to convert or to change frames with RGB 565 pixel format. More...
class	Ocean::CV::FrameConverterRGBA32
	This class provides functions to convert frames with RGBA32 pixel format. More...
class	Ocean::CV::FrameConverterRGBA64
	This class provides functions to convert frames with RGBA64 pixel format. More...
class	Ocean::CV::FrameConverterRGGB10_Packed
	This class provides functions to convert frames with RGGB10_PACKED pixel format. More...
class	Ocean::CV::FrameConverterThreshold
	This class implements frame converters dividing a frame by application of a threshold. More...
class	Ocean::CV::FrameConverterUYVY16
	This class provides functions to convert frames with UYVY16 pixel format. More...
class	Ocean::CV::FrameConverterY10_Packed
	This class provides functions to convert frames with Y10_PACKED pixel format. More...
class	Ocean::CV::FrameConverterY16
	This class provides functions to convert frames with Y16 pixel format. More...
class	Ocean::CV::FrameConverterY32
	This class provides functions to convert frames with Y32 pixel format. More...
class	Ocean::CV::FrameConverterY8
	This class provides functions to convert frames with Y8 pixel format. More...
class	Ocean::CV::FrameConverterY_U_V12
	This class provides functions to convert frames with Y_U_V12 pixel format. More...
class	Ocean::CV::FrameConverterY_U_V24
	This class provides functions to convert frames with Y_U_V24 pixel format. More...
class	Ocean::CV::FrameConverterY_UV12
	This class provides functions to convert frames with Y_UV12 pixel format. More...
class	Ocean::CV::FrameConverterY_V_U12
	This class provides functions to convert frames with Y_V_U12 pixel format. More...
class	Ocean::CV::FrameConverterY_VU12
	This class provides functions to convert frames with Y_VU12 pixel format. More...
class	Ocean::CV::FrameConverterYA16
	This class provides functions to convert frames with YA16 pixel format. More...
class	Ocean::CV::FrameConverterYUV24
	This class provides functions to convert frames with YUV24 pixel format to other pixel formats. More...
class	Ocean::CV::FrameConverterYUVA32
	This class provides functions to convert frames with YUVA32 pixel format to other pixel formats. More...
class	Ocean::CV::FrameConverterYUYV16
	This class provides functions to convert frames with YUYV16 pixel format. More...
class	Ocean::CV::FrameConverterYVU24
	This class provides functions to convert frames with YVU24 pixel format to other pixel formats. More...
class	Ocean::CV::FrameEnlarger
	This class implements functions to enlarge/up-sample frames. More...
class	Ocean::CV::FrameFilter
	This class implements the base class for all filter. More...
class	Ocean::CV::FrameFilterCanny
	This class implements a canny edge filter based on Sobel or Scharr filter operators and their responses respectively. More...
class	Ocean::CV::FrameFilterDilation
	This class implements a frame dilation filter. More...
class	Ocean::CV::FrameFilterErosion
	This class implements an erosion filter. More...
class	Ocean::CV::FrameFilterGaussian
	This class implements Gaussian image blur filters. More...
class	Ocean::CV::FrameFilterGradient
	This class implements a gradient frame filter. More...
class	Ocean::CV::FrameFilterGradientBase
	This class implements a gradient frame filter not explicitly using SIMD instructions. More...
class	Ocean::CV::FrameFilterLaplace
	This class implements Laplace frame filter. More...
class	Ocean::CV::FrameFilterMax
	This class implements filters based on the max function. More...
class	Ocean::CV::FrameFilterMean
	This class implements a mean frame filter. More...
class	Ocean::CV::FrameFilterMedian
	This class implements a median filter. More...
class	Ocean::CV::FrameFilterMin
	This class implements filters based on the min function. More...
class	Ocean::CV::FrameFilterMorphology
	This class implements the base class for all morphology frame filter. More...
class	Ocean::CV::FrameFilterPatch
	This class implements a patch frame filter. More...
class	Ocean::CV::FrameFilterPrewitt
	This class implements a Prewitt frame filter. More...
class	Ocean::CV::FrameFilterScharr
	This class implements a Scharr filter. More...
class	Ocean::CV::FrameFilterScharrMagnitude
	This class implements a scharr filter based on (or respecting) the magnitude of the response. More...
class	Ocean::CV::FrameFilterSeparable
	This class implements separable filter. More...
class	Ocean::CV::FrameFilterSobel
	This class implements a Sobel filter. More...
class	Ocean::CV::FrameFilterSobelMagnitude
	This class implements a Sobel filter based on (or respecting) the magnitude of the response. More...
class	Ocean::CV::FrameFilterSorted
	This class implements the base class for all filters relying on sorted filter values. More...
class	Ocean::CV::FrameFilterTemplate< TFactor, tFactor00, tFactor10, tFactor20, tFactor01, tFactor11, tFactor21, tFactor02, tFactor12, tFactor22 >
	This class implements a 3x3 filter with arbitrary filter pattern. More...
class	Ocean::CV::FrameFilterFactorProvider< tDirection >
	This class implements a helper class providing template filter factors. More...
class	Ocean::CV::FrameInterpolator
	This class implements functions interpolating frames and image content. More...
class	Ocean::CV::FrameInterpolatorBicubic
	This class implements a bicubic frame interpolator. More...
class	Ocean::CV::FrameInterpolatorBilinear
	This class implements bilinear frame interpolator functions. More...
class	Ocean::CV::FrameInterpolatorBilinearAlpha< tAlphaAtFront, tTransparentIs0xFF >
	This class implements bilinear frame interpolator functions for frames holding an alpha channel. More...
class	Ocean::CV::FrameInterpolatorNearestPixel
	This class implements a nearest pixel frame interpolator. More...
class	Ocean::CV::FrameInterpolatorTrilinear
	This class implements tri-linear frame interpolator functions. More...
class	Ocean::CV::FrameInverter
	This class implements a frame inverter inverting the internal frame data. More...
class	Ocean::CV::FrameMean
	This class implements functions allowing to determine e.g., the mean pixel value of a frame of a mean frame based on several frames. More...
class	Ocean::CV::FrameMinMax
	This class implements functions allowing to determine minimum and maximum values within frames. More...
class	Ocean::CV::FrameNorm
	This class implements functions allowing to determine norms of images e.g, a L2 norm. More...
class	Ocean::CV::FrameNormalizer
	This class implements functions normalizing frames. More...
class	Ocean::CV::FrameOperations
	Class for commonly used (arithmetic) operators on and between frames. More...
class	Ocean::CV::FrameProviderInterface
	This class defines an abstract interface allowing to request frames from any kind of frame provider. More...
class	Ocean::CV::FramePyramid
	This class implements a frame pyramid. More...
class	Ocean::CV::FrameShrinker
	This class implements function to downsize a frame. More...
class	Ocean::CV::FrameShrinkerAlpha
	This class implements functions downsizing frames that hold alpha channels. More...
class	Ocean::CV::FrameTransposer
	This class implements a frame transposer. More...
class	Ocean::CV::FrameVariance
	This class implements functions to determine the frame variance. More...
class	Ocean::CV::FrequencyAnalysis
	This class provides frame frequency analysis functions. More...
class	Ocean::CV::Histogram
	This class implements an image histogram. More...
class	Ocean::CV::ContrastLimitedAdaptiveHistogram
	Implementation of Contrast-Limited Adaptive Histogram Equalization (CLAHE). More...
class	Ocean::CV::IntegralImage
	This class provides functions to create an integral image from a gray scale image. More...
class	Ocean::CV::MaskAnalyzer
	This class implements basic maks analyzing functions. More...
class	Ocean::CV::Motion< TMetric >
	This class implements patch-based motion techniques. More...
class	Ocean::CV::NEON
	This class implements computer vision functions using NEON extensions. More...
class	Ocean::CV::NonMaximumSuppression< T >
	This class implements the possibility to find local maximum in a 2D array by applying a non-maximum-suppression search. More...
class	Ocean::CV::OpenCVUtilities
	This class implements utility functions for the migration from OpenCV to Ocean. More...
class	Ocean::CV::PixelBoundingBoxT< T >
	This class implements a 2D bounding box with pixel precision. More...
class	Ocean::CV::PixelPositionT< T >
	This class implements a 2D pixel position with pixel precision. More...
class	Ocean::CV::SSE
	This class implements computer vision functions using SSE extensions. More...
class	Ocean::CV::SubRegion
	This class implement a sub-region either defined by 2D triangles or defined by a binary mask. More...
class	Ocean::CV::SumAbsoluteDifferences
	This class implements functions calculation the sum of absolute differences. More...
class	Ocean::CV::SumAbsoluteDifferencesBase
	This class implements several sum of absolute differences functions. More...
class	Ocean::CV::SumAbsoluteDifferencesNEON
	This class implements functions calculation the sum of absolute differences with NEON instructions. More...
class	Ocean::CV::SumAbsoluteDifferencesSSE
	This class implements functions calculation the sum of absolute differences. More...
class	Ocean::CV::SumSquareDifferences
	This class implements functions calculating the sum of square differences. More...
class	Ocean::CV::SumSquareDifferencesBase
	This class implements several sum square differences functions based e.g., on template parameters. More...
class	Ocean::CV::SumSquareDifferencesNEON
	This class implements function to calculate sum square differences using NEON instructions. More...
class	Ocean::CV::SumSquareDifferencesSSE
	This class implements function to calculate sum square differences using SSE instructions. More...
class	Ocean::CV::ZeroMeanSumSquareDifferences
	This class implements functions calculating the zero-mean sum of square differences. More...
class	Ocean::CV::ZeroMeanSumSquareDifferencesBase
	This class implements several zero-mean sum square differences functions based e.g., on template parameters. More...
class	Ocean::CV::ZeroMeanSumSquareDifferencesNEON
	This class implements function to calculate zeao-mean sum square differences using NEON instructions. More...
class	Ocean::CV::ZeroMeanSumSquareDifferencesSSE
	This class implements function to calculate zeao-mean sum square differences using SSE instructions. More...

Typedefs
typedef std::vector< PixelDirection >	Ocean::CV::PixelDirections
	Definition of a vector holding pixel directions. More...
typedef std::vector< unsigned int >	Ocean::CV::Detector::FeatureIndices
	Definition of a vector holding feature indices. More...
typedef ObjectRef< FrameProviderInterface >	Ocean::CV::FrameProviderInterfaceRef
	Definition of an object reference holding a frame provider interface. More...
typedef Motion< SumAbsoluteDifferences >	Ocean::CV::MotionSAD
	Definition of a Motion class that applies sum absolute difference calculations as metric. More...
typedef Motion< SumSquareDifferences >	Ocean::CV::MotionSSD
	Definition of a Motion class that applies sum square difference calculations as metric. More...
typedef Motion< ZeroMeanSumSquareDifferences >	Ocean::CV::MotionZeroMeanSSD
	Definition of a Motion class that applies zero-mean sum square difference calculations as metric. More...
typedef PixelBoundingBoxT< unsigned int >	Ocean::CV::PixelBoundingBox
	Definition of the default PixelBoundingBox object with data type allowing only positive coordinate values. More...
typedef PixelBoundingBoxT< int >	Ocean::CV::PixelBoundingBoxI
	Definition of a PixelBoundingBox object with data type allowing positive and negative coordinate values. More...
typedef std::vector< PixelBoundingBox >	Ocean::CV::PixelBoundingBoxes
	Definition of a vector holding bounding box objects with only positive coordinate values. More...
typedef std::vector< PixelBoundingBoxI >	Ocean::CV::PixelBoundingBoxesI
	Definition of a vector holding bounding box objects with positive and negative coordinate values. More...
typedef PixelPositionT< unsigned int >	Ocean::CV::PixelPosition
	Definition of the default PixelPosition object with a data type allowing only positive coordinate values. More...
typedef PixelPositionT< int >	Ocean::CV::PixelPositionI
	Definition of a PixelPosition object with a data type allowing positive and negative coordinate values. More...
typedef std::vector< PixelPosition >	Ocean::CV::PixelPositions
	Definition of a vector holding pixel positions (with positive coordinate values). More...
typedef std::vector< PixelPositionI >	Ocean::CV::PixelPositionsI
	Definition of a vector holding pixel positions (with positive and negative coordinate values). More...

Enumerations
enum	Ocean::CV::PixelDirection : int32_t {   Ocean::CV::PD_INVALID = -1 , Ocean::CV::PD_NORTH = 0 , Ocean::CV::PD_NORTH_WEST = 45 , Ocean::CV::PD_WEST = 90 ,   Ocean::CV::PD_SOUTH_WEST = 135 , Ocean::CV::PD_SOUTH = 180 , Ocean::CV::PD_SOUTH_EAST = 225 , Ocean::CV::PD_EAST = 270 ,   Ocean::CV::PD_NORTH_EAST = 315 }
	Definition of individual directions with pixel accuracy. More...
enum	Ocean::CV::PixelCenter : uint32_t { Ocean::CV::PC_TOP_LEFT , Ocean::CV::PC_CENTER }
	Definition of individual centers of pixels. More...

Detailed Description

The Ocean CV Library provides basic Computer Vision functionalities.

There exist several further specialized Computer Vision libraries, like e.g,. the Advanced Computer Vision library or the Computer Vision libraries addressing feature detection tasks.
The library is platform independent.

The FrameConverterABGR32, FrameConverterARGB32, ... classes implement functions to convert frame data with specific pixel format to different pixel formats (and e.g., different pixel origins). The FrameConverter::Comfort::change() and FrameConverter::Comfort::convert() functions provide a simple interface for frame conversion task.

The Bresenham and Canvas class provide drawing and painting functionalities (also with sub-pixel accuracies).

Several individual common frame filter are implemented in e.g., FrameFilterGaussian, FrameFilterSeparable, FrameFilterDilation, ..., FrameFilterScharr, ...

The FrameShrinker allows to reduce the size of a frame while the FrameEnlarger allows to increase the size of a frame. The FrameShrinkerAlpha additionally provides specific support for frames with alpha channel.

The SSE class provides SIMD functions for x86, x64 platforms while the NEON class provides SIMD functions for Android ARM platforms.

The PixelPosition class stores a 2D pixel-accurate position, the PixelBoundingBox class implements a bounding box with pixel-accuracy.

The NonMaximumSuppression class provides a multi-core-capable solution to determine peaks in filter responses e.g., for feature point detection.

The SubRegion class can be used to determine a sub-region within a frame either by defining a mask or by defining the 2D coordinates of the contour.

The SumAbsoluteDifferences, the SumSquareDifferences and the ZeroMeanSumSquareDifferences classes provide functions measuring distances between image regions (patches).

Typedef Documentation

FeatureIndices

typedef std::vector<unsigned int> Ocean::CV::Detector::FeatureIndices

Definition of a vector holding feature indices.

FrameProviderInterfaceRef

typedef ObjectRef<FrameProviderInterface> Ocean::CV::FrameProviderInterfaceRef

Definition of an object reference holding a frame provider interface.

See also

FrameProviderInterface;

MotionSAD

typedef Motion<SumAbsoluteDifferences> Ocean::CV::MotionSAD

Definition of a Motion class that applies sum absolute difference calculations as metric.

See also

MotionSSD, MotionZeroMeanSSD, Motion.

MotionSSD

typedef Motion<SumSquareDifferences> Ocean::CV::MotionSSD

Definition of a Motion class that applies sum square difference calculations as metric.

See also

MotionSAD, MotionZeroMeanSSD, Motion.

MotionZeroMeanSSD

typedef Motion<ZeroMeanSumSquareDifferences> Ocean::CV::MotionZeroMeanSSD

Definition of a Motion class that applies zero-mean sum square difference calculations as metric.

See also

MotionSAD, MotionSSD, Motion.

PixelBoundingBox

typedef PixelBoundingBoxT<unsigned int> Ocean::CV::PixelBoundingBox

Definition of the default PixelBoundingBox object with data type allowing only positive coordinate values.

See also

PixelPositionT

PixelBoundingBoxes

typedef std::vector<PixelBoundingBox> Ocean::CV::PixelBoundingBoxes

Definition of a vector holding bounding box objects with only positive coordinate values.

See also

PixelBoundingBox

PixelBoundingBoxesI

typedef std::vector<PixelBoundingBoxI> Ocean::CV::PixelBoundingBoxesI

Definition of a vector holding bounding box objects with positive and negative coordinate values.

See also

PixelBoundingBoxI

PixelBoundingBoxI

typedef PixelBoundingBoxT<int> Ocean::CV::PixelBoundingBoxI

Definition of a PixelBoundingBox object with data type allowing positive and negative coordinate values.

See also

PixelPositionT

PixelDirections

typedef std::vector<PixelDirection> Ocean::CV::PixelDirections

Definition of a vector holding pixel directions.

PixelPosition

typedef PixelPositionT<unsigned int> Ocean::CV::PixelPosition

Definition of the default PixelPosition object with a data type allowing only positive coordinate values.

See also

PixelPositionT

PixelPositionI

typedef PixelPositionT<int> Ocean::CV::PixelPositionI

Definition of a PixelPosition object with a data type allowing positive and negative coordinate values.

See also

PixelPositionT

PixelPositions

typedef std::vector<PixelPosition> Ocean::CV::PixelPositions

Definition of a vector holding pixel positions (with positive coordinate values).

See also

PixelPosition

PixelPositionsI

typedef std::vector<PixelPositionI> Ocean::CV::PixelPositionsI

Definition of a vector holding pixel positions (with positive and negative coordinate values).

See also

PixelPositionI

Enumeration Type Documentation

PixelCenter

enum Ocean::CV::PixelCenter : uint32_t

Definition of individual centers of pixels.

Enumerator
PC_TOP_LEFT	The center of a pixel is in the upper-left corner of each pixel's square. Below an image with 2x2 pixels, the pixel center is denoted by 'X': X-------X------- | | | | | | <- first pixel row of image | | | X-------X------- | | | | | | <- second pixel row of image | | | ------- -------
PC_CENTER	The center of a pixel is located in the center of each pixel's square (with an offset of 0.5, 0.5). Below an image with 2x2 pixels, the pixel center is denoted by 'X': ------- ------- | | | | X | X | <- first pixel row of image | | | ------- ------- | | | | X | X | <- second pixel row of image | | | ------- -------

PixelDirection

enum Ocean::CV::PixelDirection : int32_t

Definition of individual directions with pixel accuracy.

The values of the individual directions are defined by the angle (in counter clockwise order) in degree.
The default direction is the north direction (pointing upwards in an image with pixel origin in the top left corner).
Here is a visualization of the individual pixel directions:

Image with origin in top left corner (denoted by X) and the pixel position P:
X---------------------       X---------------------
|                     |      |                     |
|    NW    N    NE    |      |    45    0    315   |
|                     |      |                     |
|     W    P    E     |      |    90    P    270   |
|                     |      |                     |
|    SW    S    SE    |      |   135   180   225   |
|                     |      |                     |
 ---------------------        ---------------------

Beware: An invalid pixel direction (PD_INVALID) has the value -1 and not 0 as often for other enums.

Enumerator
PD_INVALID
PD_NORTH
PD_NORTH_WEST
PD_WEST
PD_SOUTH_WEST
PD_SOUTH
PD_SOUTH_EAST
PD_EAST
PD_NORTH_EAST