Class StereoSGBM

Semi-Global Stereo Matching

Inheritance
System.Object
DisposableObject
DisposableCvObject
Algorithm
StereoMatcher
StereoSGBM
Implements
Inherited Members
Namespace: OpenCvSharp
Assembly: OpenCvSharp.dll
Syntax
public class StereoSGBM : StereoMatcher, ICvPtrHolder

Constructors

| Improve this Doc View Source

StereoSGBM(IntPtr)

constructor

Declaration
protected StereoSGBM(IntPtr ptr)
Parameters
Type Name Description
IntPtr ptr

Properties

| Improve this Doc View Source

Mode

Set it to StereoSGBM::MODE_HH to run the full-scale two-pass dynamic programming algorithm. It will consume O(W*H*numDisparities) bytes, which is large for 640x480 stereo and huge for HD-size pictures. By default, it is set to false .

Declaration
public StereoSGBMMode Mode { get; set; }
Property Value
Type Description
StereoSGBMMode
| Improve this Doc View Source

P1

The first parameter controlling the disparity smoothness. See P2 description.

Declaration
public int P1 { get; set; }
Property Value
Type Description
System.Int32
| Improve this Doc View Source

P2

The second parameter controlling the disparity smoothness. The larger the values are, the smoother the disparity is. P1 is the penalty on the disparity change by plus or minus 1 between neighbor pixels. P2 is the penalty on the disparity change by more than 1 between neighbor pixels. The algorithm requires P2 > P1 . See stereo_match.cpp sample where some reasonably good P1 and P2 values are shown (like 8*number_of_image_channels*SADWindowSize*SADWindowSize and 32*number_of_image_channels*SADWindowSize*SADWindowSize , respectively).

Declaration
public int P2 { get; set; }
Property Value
Type Description
System.Int32
| Improve this Doc View Source

PreFilterCap

Truncation value for the prefiltered image pixels. The algorithm first computes x-derivative at each pixel and clips its value by [-preFilterCap, preFilterCap] interval. The result values are passed to the Birchfield-Tomasi pixel cost function.

Declaration
public int PreFilterCap { get; set; }
Property Value
Type Description
System.Int32
| Improve this Doc View Source

UniquenessRatio

Margin in percentage by which the best (minimum) computed cost function value should "win" the second best value to consider the found match correct. Normally, a value within the 5-15 range is good enough.

Declaration
public int UniquenessRatio { get; set; }
Property Value
Type Description
System.Int32

Methods

| Improve this Doc View Source

Create(Int32, Int32, Int32, Int32, Int32, Int32, Int32, Int32, Int32, Int32, StereoSGBMMode)

Declaration
public static StereoSGBM Create(int minDisparity, int numDisparities, int blockSize, int p1 = 0, int p2 = 0, int disp12MaxDiff = 0, int preFilterCap = 0, int uniquenessRatio = 0, int speckleWindowSize = 0, int speckleRange = 0, StereoSGBMMode mode = StereoSGBMMode.SGBM)
Parameters
Type Name Description
System.Int32 minDisparity
System.Int32 numDisparities
System.Int32 blockSize
System.Int32 p1
System.Int32 p2
System.Int32 disp12MaxDiff
System.Int32 preFilterCap
System.Int32 uniquenessRatio
System.Int32 speckleWindowSize
System.Int32 speckleRange
StereoSGBMMode mode
Returns
Type Description
StereoSGBM
| Improve this Doc View Source

DisposeManaged()

Releases managed resources

Declaration
protected override void DisposeManaged()
Overrides
| Improve this Doc View Source

DisposeUnmanaged()

Declaration
protected override void DisposeUnmanaged()
Overrides
| Improve this Doc View Source

Get()

Declaration
public override IntPtr Get()
Returns
Type Description
IntPtr

Implements