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Supported Features and Known Issues

This section lists the features available in OpenCV for Tegra, the functions that have been optimized for Tegra, and its limitations.

Supported Features

The following table lists the modules that are included in OpenCV for Tegra. Follow the web links in the right column for details of the functions available in each module.

OpenCV for Tegra Libraries

Functions Optimized for Tegra

The following is a list of functions that are specifically optimized for Tegra. For more detailed information about each of these functions,including their various input image formats, see the chapter titled "TEGRA-Powered Computer Vision" of The OpenCV Reference Manual, Release 2.4.8.2 document located at <path to TADP directory>/OpenCV-2.4.8.2-tegra-sdk/doc/opencv2refman-tegra.pdf.

• The Core Functionality
  

  cv::absdiff
  cv::add
  cv::addWeighted
  cv::bitwise_and
  cv::bitwise_not
  cv::bitwise_or
  cv::bitwise_xor
  cv::compare
  cv::countNonZero
  cv::FastArctan
  cv::inRange
  cv::max
  cv::mean
  cv::meanStdDev
  cv::merge
  cv::min
  cv::minMaxLoc
  cv::norm
  cv::phase
  cv::reduce
  cv::round
  cv::split
  cv::subtract
  cv::sum
  cv::Mat::dot
  cv::Mat::convertTo

• Image Processing
  

  cv::blur
  cv::boxFilter
  cv::Canny
  cv::cornerMinEigenVal
  cv::cornerEigenValsandVecs
  cv::cornerHarris 
  cv::cvtColor
  cv::dilate
  cv::erode
  cv::filter2D
  cv::GaussianBlur
  cv::integral
  cv::Laplacian
  cv::matchTemplate
  cv::medianBlur
  cv::pyrDown
  cv::pyrUp
  cv::resize
  cv::Scharr
  cv::Sobel
  cv::threshold
  cv::warpAffine
  cv::warpPerspective

• 2D Features Framework
  

  cv::FAST

• Video Analysis
  

  cv::calcOpticalFlowPyrLK
  cv::buildOpticalFlowPyramid

• Computational Photography
  

  cv::fastN1MeansDenoising
  cv::fastN1MeansDenoisingColored

• Images stitching
  

  cv::detail::createLaplacePyr
  cv::detail::normalizeUsingWeightMap
  cv::detail::BestOf2NearestMatcher::match

• Camera Calibration and 3D Reconstruction
  

  cv::findCirclesGrid

• Object detection
  

  cv::CascadeClassifier::detectSingleScale

Known Issues

OpenCV for Tegra has the following limitations.

Highgui Module Restrictions

The highgui module does not include video IO and User Interface functionality. Only the following functions are available:

cv::imread
cv::imwrite
cv::imencode
cv::imdecode 

OpenCV GPU Modules Restrictions

1. The GPU module, that contains CUDA-optimized functions, is available on Tegra K1 only. See the http://docs.opencv.org/modules/gpu/doc/gpu.html for the list of available functions.
2. OpenCL support is experimental (http://docs.opencv.org/modules/ocl/doc/ocl.html), you normally should avoid the use of it in production code. Also, the module will disappear in OpenCV 3.0. OpenCL will be used through so-called Transparent API.

Excluded Libraries

The following table shows the features that are absent in OpenCV for Tegra.

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