Background Subtractor module based on the algorithm given in [Gold2012] . More...
Public Member Functions | |
| int | getMaxFeatures () |
| Returns total number of distinct colors to maintain in histogram. More... | |
| void | setMaxFeatures (int maxFeatures) |
| Sets total number of distinct colors to maintain in histogram. More... | |
| double | getDefaultLearningRate () |
| Returns the learning rate of the algorithm. More... | |
| void | setDefaultLearningRate (double lr) |
| Sets the learning rate of the algorithm. More... | |
| int | getNumFrames () |
| Returns the number of frames used to initialize background model. More... | |
| void | setNumFrames (int nframes) |
| Sets the number of frames used to initialize background model. More... | |
| int | getQuantizationLevels () |
| Returns the parameter used for quantization of color-space. More... | |
| void | setQuantizationLevels (int nlevels) |
| Sets the parameter used for quantization of color-space. More... | |
| double | getBackgroundPrior () |
| Returns the prior probability that each individual pixel is a background pixel. More... | |
| void | setBackgroundPrior (double bgprior) |
| Sets the prior probability that each individual pixel is a background pixel. More... | |
| int | getSmoothingRadius () |
| Returns the kernel radius used for morphological operations. More... | |
| void | setSmoothingRadius (int radius) |
| Sets the kernel radius used for morphological operations. More... | |
| double | getDecisionThreshold () |
| Returns the value of decision threshold. More... | |
| void | setDecisionThreshold (double thresh) |
| Sets the value of decision threshold. More... | |
| bool | getUpdateBackgroundModel () |
| Returns the status of background model update. More... | |
| void | setUpdateBackgroundModel (bool update) |
| Sets the status of background model update. More... | |
| double | getMinVal () |
| Returns the minimum value taken on by pixels in image sequence. Usually 0. More... | |
| void | setMinVal (double val) |
| Sets the minimum value taken on by pixels in image sequence. More... | |
| double | getMaxVal () |
| Returns the maximum value taken on by pixels in image sequence. e.g. 1.0 or 255. More... | |
| void | setMaxVal (double val) |
| Sets the maximum value taken on by pixels in image sequence. More... | |
 Public Member Functions inherited from OpenCVForUnity.VideoModule.BackgroundSubtractor | |
| virtual void | apply (Mat image, Mat fgmask, double learningRate) |
| Computes a foreground mask. More... | |
| virtual void | apply (Mat image, Mat fgmask) |
| Computes a foreground mask. More... | |
| virtual void | getBackgroundImage (Mat backgroundImage) |
| Computes a background image. More... | |
| Public Member Functions inherited from OpenCVForUnity.CoreModule.Algorithm | |
| IntPtr | getNativeObjAddr () |
| virtual void | clear () |
| Clears the algorithm state. More... | |
| virtual bool | empty () |
| Returns true if the Algorithm is empty (e.g. in the very beginning or after unsuccessful read. More... | |
| void | save (string filename) |
| virtual string | getDefaultName () |
| Public Member Functions inherited from OpenCVForUnity.DisposableObject | |
| void | Dispose () |
| void | ThrowIfDisposed () |
Static Public Member Functions | |
| static new BackgroundSubtractorGMG | __fromPtr__ (IntPtr addr) |
| Static Public Member Functions inherited from OpenCVForUnity.VideoModule.BackgroundSubtractor | |
| static new BackgroundSubtractor | __fromPtr__ (IntPtr addr) |
| Static Public Member Functions inherited from OpenCVForUnity.CoreModule.Algorithm | |
| static Algorithm | __fromPtr__ (IntPtr addr) |
| Static Public Member Functions inherited from OpenCVForUnity.DisposableObject | |
| static IntPtr | ThrowIfNullIntPtr (IntPtr ptr) |
Protected Member Functions | |
| override void | Dispose (bool disposing) |
| Protected Member Functions inherited from OpenCVForUnity.DisposableOpenCVObject | |
| DisposableOpenCVObject () | |
| DisposableOpenCVObject (IntPtr ptr) | |
| DisposableOpenCVObject (bool isEnabledDispose) | |
| DisposableOpenCVObject (IntPtr ptr, bool isEnabledDispose) | |
| Protected Member Functions inherited from OpenCVForUnity.DisposableObject | |
| DisposableObject () | |
| DisposableObject (bool isEnabledDispose) | |
Additional Inherited Members | |
| Properties inherited from OpenCVForUnity.DisposableObject | |
| bool | IsDisposed [get, protected set] |
| bool | IsEnabledDispose [get, set] |
Detailed Description
Background Subtractor module based on the algorithm given in [Gold2012] .
Takes a series of images and returns a sequence of mask (8UC1) images of the same size, where 255 indicates Foreground and 0 represents Background. This class implements an algorithm described in "Visual Tracking of Human Visitors under Variable-Lighting Conditions for a Responsive Audio Art Installation," A. Godbehere, A. Matsukawa, K. Goldberg, American Control Conference, Montreal, June 2012.
Member Function Documentation
◆ __fromPtr__()
|
static |
◆ Dispose()
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protectedvirtual |
Reimplemented from OpenCVForUnity.VideoModule.BackgroundSubtractor.
◆ getBackgroundPrior()
| double OpenCVForUnity.BgsegmModule.BackgroundSubtractorGMG.getBackgroundPrior | ( | ) |
Returns the prior probability that each individual pixel is a background pixel.
◆ getDecisionThreshold()
| double OpenCVForUnity.BgsegmModule.BackgroundSubtractorGMG.getDecisionThreshold | ( | ) |
Returns the value of decision threshold.
Decision value is the value above which pixel is determined to be FG.
◆ getDefaultLearningRate()
| double OpenCVForUnity.BgsegmModule.BackgroundSubtractorGMG.getDefaultLearningRate | ( | ) |
Returns the learning rate of the algorithm.
It lies between 0.0 and 1.0. It determines how quickly features are "forgotten" from histograms.
◆ getMaxFeatures()
| int OpenCVForUnity.BgsegmModule.BackgroundSubtractorGMG.getMaxFeatures | ( | ) |
Returns total number of distinct colors to maintain in histogram.
◆ getMaxVal()
| double OpenCVForUnity.BgsegmModule.BackgroundSubtractorGMG.getMaxVal | ( | ) |
Returns the maximum value taken on by pixels in image sequence. e.g. 1.0 or 255.
◆ getMinVal()
| double OpenCVForUnity.BgsegmModule.BackgroundSubtractorGMG.getMinVal | ( | ) |
Returns the minimum value taken on by pixels in image sequence. Usually 0.
◆ getNumFrames()
| int OpenCVForUnity.BgsegmModule.BackgroundSubtractorGMG.getNumFrames | ( | ) |
Returns the number of frames used to initialize background model.
◆ getQuantizationLevels()
| int OpenCVForUnity.BgsegmModule.BackgroundSubtractorGMG.getQuantizationLevels | ( | ) |
Returns the parameter used for quantization of color-space.
It is the number of discrete levels in each channel to be used in histograms.
◆ getSmoothingRadius()
| int OpenCVForUnity.BgsegmModule.BackgroundSubtractorGMG.getSmoothingRadius | ( | ) |
Returns the kernel radius used for morphological operations.
◆ getUpdateBackgroundModel()
| bool OpenCVForUnity.BgsegmModule.BackgroundSubtractorGMG.getUpdateBackgroundModel | ( | ) |
Returns the status of background model update.
◆ setBackgroundPrior()
| void OpenCVForUnity.BgsegmModule.BackgroundSubtractorGMG.setBackgroundPrior | ( | double | bgprior | ) |
Sets the prior probability that each individual pixel is a background pixel.
◆ setDecisionThreshold()
| void OpenCVForUnity.BgsegmModule.BackgroundSubtractorGMG.setDecisionThreshold | ( | double | thresh | ) |
Sets the value of decision threshold.
◆ setDefaultLearningRate()
| void OpenCVForUnity.BgsegmModule.BackgroundSubtractorGMG.setDefaultLearningRate | ( | double | lr | ) |
Sets the learning rate of the algorithm.
◆ setMaxFeatures()
| void OpenCVForUnity.BgsegmModule.BackgroundSubtractorGMG.setMaxFeatures | ( | int | maxFeatures | ) |
Sets total number of distinct colors to maintain in histogram.
◆ setMaxVal()
| void OpenCVForUnity.BgsegmModule.BackgroundSubtractorGMG.setMaxVal | ( | double | val | ) |
Sets the maximum value taken on by pixels in image sequence.
◆ setMinVal()
| void OpenCVForUnity.BgsegmModule.BackgroundSubtractorGMG.setMinVal | ( | double | val | ) |
Sets the minimum value taken on by pixels in image sequence.
◆ setNumFrames()
| void OpenCVForUnity.BgsegmModule.BackgroundSubtractorGMG.setNumFrames | ( | int | nframes | ) |
Sets the number of frames used to initialize background model.
◆ setQuantizationLevels()
| void OpenCVForUnity.BgsegmModule.BackgroundSubtractorGMG.setQuantizationLevels | ( | int | nlevels | ) |
Sets the parameter used for quantization of color-space.
◆ setSmoothingRadius()
| void OpenCVForUnity.BgsegmModule.BackgroundSubtractorGMG.setSmoothingRadius | ( | int | radius | ) |
Sets the kernel radius used for morphological operations.
◆ setUpdateBackgroundModel()
| void OpenCVForUnity.BgsegmModule.BackgroundSubtractorGMG.setUpdateBackgroundModel | ( | bool | update | ) |
Sets the status of background model update.
The documentation for this class was generated from the following file:
- OpenCVForUnity/Assets/OpenCVForUnity/org/opencv_contrib/bgsegm/BackgroundSubtractorGMG.cs
