How to use OPENCV library

RSOpenCV
Author: XverhelstX
Version: 1

• RSCVFeatureDetector
  Fields:
  • BRISK As Int
  • DENSE As Int
  • FAST As Int
  • GFTT As Int
  • HARRIS As Int
  • MSER As Int
  • ORB As Int
  • SIFT As Int
  • SIMPLEBLOB As Int
  • STAR As Int
  • SURF As Int
  Methods:
  • Detect (image As Mat) As List
    Detects keypoints in an image (first variant) or image set (second variant).
    Returns a list of keypoints.
  • Initialize (DetectorType As Int)
    Initializes this FeatureDetector.
  • IsInitialized As Boolean
• RSCVImgProc
  Fields:
  • CV_CHAIN_APPROX_NONE As Int
  • CV_CHAIN_APPROX_SIMPLE As Int
  • CV_CHAIN_APPROX_TC89_KCOS As Int
  • CV_CHAIN_APPROX_TC89_L1 As Int
  • CV_INTER_AREA As Int
  • CV_INTER_CUBIC As Int
  • CV_INTER_LANCZOS4 As Int
  • CV_INTER_LINEAR As Int
  • CV_INTER_NN As Int
  • CV_MOP_BLACKHAT As Int
  • CV_MOP_CLOSE As Int
  • CV_MOP_DILATE As Int
  • CV_MOP_ERODE As Int
  • CV_MOP_GRADIENT As Int
  • CV_MOP_OPEN As Int
  • CV_MOP_TOPHAT As Int
  • CV_RETR_CCOMP As Int
  • CV_RETR_EXTERNAL As Int
  • CV_RETR_FLOODFILL As Int
  • CV_RETR_LIST As Int
  • CV_RETR_TREE As Int
  • CV_THRESH_BINARY As Int
  • CV_THRESH_BINARY_INV As Int
  • CV_THRESH_MASK As Int
  • CV_THRESH_OTSU As Int
  • CV_THRESH_TOZERO As Int
  • CV_THRESH_TOZERO_INV As Int
  • CV_THRESH_TRUNC As Int
  • IPL_BORDER_CONSTANT As Int
  • IPL_BORDER_REFLECT As Int
  • IPL_BORDER_REFLECT_101 As Int
  • IPL_BORDER_REPLICATE As Int
  • IPL_BORDER_TRANSPARENT As Int
  • IPL_BORDER_WRAP As Int
  • MORPH_BLACKHAT As Int
  • MORPH_CLOSE As Int
  • MORPH_CROSS As Int
  • MORPH_DILATE As Int
  • MORPH_ELLIPSE As Int
  • MORPH_ERODE As Int
  • MORPH_GRADIENT As Int
  • MORPH_OPEN As Int
  • MORPH_RECT As Int
  • MORPH_TOPHAT As Int
  Methods:
  • AddWeighted (src1 As Mat, alpha As Double, src2 As Mat, beta As Double, gamma As Double) As Mat
    Calculates the weighted sum of two arrays.
    src1: First input array.
    alpha: Weight of the first array elements.
    src2: Second input array of the same size and channel number as src1.
    Beta: weight of the second array elements.
    gamma: Scalar added to each sum.
  • BilateralFilter (src As Mat, d As Int, sigmaColor As Double, sigmaSpace As Double) As Mat
    Applies the bilateral filter to an image.
    The function applies bilateral filtering to the input image,
    BilateralFilter can reduce unwanted noise very well while keeping edges fairly sharp.
    However, it is very slow compared to most filters.
    src: Source image
    d: Diameter of each pixel neighborhood that is used during filtering. If it is non-positive, it is computed from sigmaSpace.
    sigmaColor: Filter sigma in the color space. A larger value of the parameter means that farther colors within the pixel neighborhood (see sigmaSpace) will be mixed together,
    resulting in larger areas of semi-equal color.
    sigmaSpace: Filter sigma in the coordinate space. A larger value of the parameter means that farther pixels will
    influence each other as long as their colors are close enough (see sigmaColor).
  • Blur (image As Mat, width As Double, height As Double) As Mat
    Blurs an image using the normalized box filter.
    image:
    width:
    height:
    Return type: @return:
  • Canny (image As Mat, threshold1 As Double, threshold2 As Double) As Mat
    Finds edges in an image using the [Canny86] algorithm.
    
    The function finds edges in the input image image and marks them in the output map edges using the Canny algorithm.
    The smallest value between threshold1 and threshold2 is used for edge linking. The largest value is used to find initial segments of strong edges.
  • ContourArea (contour As Mat) As Double
    Calculates a contour area.
    
    The function computes a contour area. Similarly to "moments", the area is computed using the Green formula.
    Thus, the returned area and the number of non-zero pixels, if you draw the contour using "drawContours" or "fillPoly",
    can be different. Also, the function will most certainly give a wrong results for contours with self-intersections.
  • Denoise (src As Mat) As Mat
    Perform image denoising using Non-local Means Denoising algorithm.
    Noise expected to be a gaussian white noise
    src:
    Return type: @return:
  • Dilate (src As Mat, shape As Int, width As Double, height As Double, anchor As Point, iterations As Int) As Mat
    Dilates an image by using a specific structuring element.
    
    The function dilates the source image using the specified structuring element that determines the shape of a pixel neighborhood over which the maximum is taken:
    src: input image; the number of channels can be arbitrary, but the depth should be one of CV_8U, CV_16U, CV_16S, CV_32F" or CV_64F".
    shape: One of the Morph constants.
    width:
    height:
    anchor: position of the anchor within the element; default value (-1, -1) means that the anchor is at the element center.
    iterations: number of times dilation is applied.
    Return type: @return:
  • Erode (src As Mat, shape As Int, width As Double, height As Double, anchor As Point, iterations As Int) As Mat
    Erodes an image by using a specific structuring element.
    
    The function erodes the source image using the specified structuring element that determines the shape of a pixel neighborhood over which the minimum is taken:
    src: input image; the number of channels can be arbitrary, but the depth should be one of CV_8U, CV_16U, CV_16S, CV_32F" or CV_64F".
    shape: One of the Morph constants.
    width:
    height:
    anchor: position of the anchor within the element; default value (-1, -1) means that the anchor is at the element center.
    iterations: number of times dilation is applied.
    Return type: @return:
  • FindBoundingBox (contour As MatOfPoint) As Rect
    Find the bounding box of a contour.
    contour:
    Return type: @return:
  • FindContours (image As Mat, mode As Int, method As Int) As List
    Find contours in an image.
    image:
    hierarchy:
    mode:
    method: Returns a list of MatOfPoints from the contours.
  • GaussianBlur (src As Mat, width As Double, height As Double, sigmaX As Double) As Mat
    Blurs an image using a Gaussian filter.
    
    The function convolves the source image with the specified Gaussian kernel. In-place filtering is supported.
    src: input image; the image can have any number of channels, which are processed independently, but the depth should be CV_8U, CV_16U, CV_16S, CV_32F or CV_64F.
    Size: Gaussian kernel size. ksize.width and ksize.height can differ but they both must be positive and odd. Or, they can be zero's and then they are computed from sigma*.
    sigmaX: Gaussian kernel standard deviation in X direction.
  • GrayScale (src As Mat) As Mat
    Grayscales an image.
    src:
    Return type: @return:
  • Initialize
    Initializes this image processing.
  • IsInitialized As Boolean
  • PointsFromContour (mop As MatOfPoint) As List
    Returns points objects from a MatOfPoint as a list.
    mop:
    Return type: @return:
  • Resize (src As Mat, width As Double, height As Double) As Mat
    Resizes an image.
    
    The function resize resizes the image src down to or up to the specified size.Note that the initial dst type or size are not taken into account.
    src:
    width:
    height:
• RSCVJavaCamera
  Fields:
  • CAMERA_ID_ANY As Int
  • CAMERA_ID_BACK As Int
  • CAMERA_ID_FRONT As Int
  • GONE As Int
  • INVISIBLE As Int
  • VISIBLE As Int
  Methods:
  • DisableView
    Disables the view.
  • EnableView
    Enables this view.
  • Initialize (EventName As String, CameraID As Int)
    Initializes this Java Camera View.
  • IsInitialized As Boolean
  Permissions:
  • android.permission.CAMERA
  Properties:
  • Visibilty As Int [write only]
    Sets the visibility.
• RSCVKeyPoint
  Methods:
  • Initialize (x As Float, y As Float, size As Float)
    Initializes this KeyPoint.
  • Initialize2 (x As Float, y As Float, size As Float, angle As Float)
    Initializes this KeyPoint with an angle.
  • IsInitialized As Boolean
  Properties:
  • Angle As Float [read only]
    Gets the angle of this keypoint.
    Computed orientation of the keypoint (-1 if not applicable).
  • ClassId As Int [read only]
    Gets the Object id of this keypoint.
    Object ID, that can be used to cluster keypoints by an object they belong to.
  • Octave As Int [read only]
    Gets the octave of this keypoint.
    Octave (pyramid layer), from which the keypoint has been extracted.
  • Response As Float [read only]
    Gets the Response.
    Returns The response, by which the strongest keypoints have been selected. Can be used for further sorting or subsampling.
  • Size As Float [read only]
    Gets the size.
    Returns Diameter of the useful keypoint adjacent area.
  • X As Double [read only]
    Gets the X coordinate of this keypoint.
  • Y As Double [read only]
    Gets the Y coordinate of this keypoint.
• RSCVNativeCamera
  Fields:
  • CAMERA_ID_ANY As Int
  • CAMERA_ID_BACK As Int
  • CAMERA_ID_FRONT As Int
  • GONE As Int
  • INVISIBLE As Int
  • VISIBLE As Int
  Methods:
  • DisableView
    Disables the view.
  • EnableView
    Enables this view.
  • Initialize (EventName As String, CameraID As Int)
    Initializes this Native Camera View.
  • IsInitialized As Boolean
  Permissions:
  • android.permission.CAMERA
  Properties:
  • Visibilty As Int [write only]
    Sets the visibility.
• RSCVPoint
  Methods:
  • Initialize (x As Float, y As Float)
    Initializes this Point.
  • IsInitialized As Boolean
  Properties:
  • X As Double [read only]
    Gets the X coordinate of this keypoint.
  • Y As Double [read only]
    Gets the Y coordinate of this keypoint.
• RSCVRect
  Methods:
  • Initialize (x As Int, y As Int, width As Int, height As Int)
    Initializes this rectangle.
  • IsInitialized As Boolean
  Properties:
  • Height As Int [read only]
  • Width As Int [read only]
  • X As Int [read only]
  • Y As Int [read only]
• RSCVThread
  Methods:
  • Initialize (ThreadName As String)
    Creates a new thread to work on.
  • IsInitialized As Boolean
• RSOpenCV
  Methods:
  • CleanString (text As String) As String
  • ConvertBitmapToMat (bitmap As Bitmap) As Mat
    Converts a bitmap to an opencv map object.
    Return type: @return:
  • ConvertMatToBitmap (mat As Mat) As Bitmap
    Converts a map to a bitmap..
    Return type: @return:
  • InitAsync
    Inits the Open CV loader in activity resume.
  • Initialize (EventName As String)
    Initializes the RSOpenCv Library.

Click to expand...

XverhelstX said:

Hi

The wrapper is not yet available for public use cause I can't port all methods.
If you want methods/classes to be ported to Basic4Android, please send me a private message.
You can see all available classes/methods here:
http://docs.opencv.org/java/

Kind regards,
Tomas

Click to expand...

XverhelstX said:

Hi

The wrapper is not yet available for public use cause I can't port all methods.
If you want methods/classes to be ported to Basic4Android, please send me a private message.
You can see all available classes/methods here:
http://docs.opencv.org/java/

Kind regards,
Tomas

Click to expand...