Function reference • Rvision

All functions

CLAHE(): Contrast Limited Adaptive Histogram Equalization

image(): An S4 Class Containing an OpenCV Image

LUT(): Look-up Table Transform

ORBkeypoints(): Keypoint Detection with ORB

queue(): An S4 Class Containing a Queue of Images

Rvision-package Rvision: Rvision: Computer vision library for R

RvisionAck: Image and video samples

stream(): An S4 Class Containing an OpenCV Stream

video(): An S4 Class Containing an OpenCV Video

VideoStack-class VideoStack: An S4 Class Containing a Video Stack

videoWriter(): An S4 Class Containing an OpenCV Video Writer

adaptiveThreshold(): Adaptive Thresholding

addWeighted(): Weighted Sum of Two Images

anisotropicDiffusion(): Anisotropic Diffusion

api(): API of a Video Writer

approxPolyDP(): Calculate a Contour Perimeter or a Curve Length

arcLength(): Calculate a Contour Perimeter or a Curve Length

as.array(<Rcpp_Image>): Convert Image to Array or Matrix

autothreshold(): Automated Thresholding

bilateralFilter(): Edge-Preserving Noise Reduction with a Bilateral Filter

bitdepth(): The Bit Depth of an Image

blur(): Blurs an Image Using a Normalized Box Filter

border(): Add Border to Image

boxFilter(): Blurs an Image Using a Box Filter

boxPoints(): Find Vertices of a Rotated Rectangle

calibrateCamera(): Find a Camera's Intrinsic and Extrinsic Parameters

canny(): Canny Edge Detector

capacity(): Capacity of a Queue

cartToPolar(): Convert Cartesian Coordinates to Polar

cc_table: Table of Color Space Conversions

changeBitDepth(): Convert Image to New Bit Depth

changeColorSpace(): Convert Image to New Color Space

click(): Detect Mouse Click on Image Display

cloneImage(): Make a copy of an Image object

codec(): Codec of a Video

col2bgr(): Color to BGR Conversion

colorspace(): The Color Space of an Image

compare(): Comparison between Images

computeECC(): Enhanced Correlation Coefficient Value

concatenate(): Concatenate Images

connectedComponents(): Find Connected Components in a binary Image

contourArea(): Area of a Contour

convexHull(): Compute the Convex Hull of a Set of Points

convexityDefects(): Find the Convexity Defects of a Polygon

cornerSubPix(): Refine Corner Locations

countNonZero(): Count Non-Zero Pixels

destroyDisplay() destroyAllDisplays(): Destroy Image Display

dim(<Rcpp_Image>): Dimensions of an Image

dim(<Rcpp_Queue>): Dimensions of a Queue

dim(<Rcpp_Stream>): Dimensions of a Stream

dim(<Rcpp_Video>): Dimensions of a Video

dim(<Rcpp_VideoWriter>): Dimensions of a Video Writer

dim(<VideoStack>): Dimensions of a VideoStack

display(): Display Image Object

distanceTransform(): Distance Transform

drawArrow(): Draw Arrows on an Image

drawCircle(): Draw Circles on an Image

drawEllipse(): Draw Ellipses on an Image

drawLine(): Draw Lines on an Image

drawPolyline(): Draw Polygonal Lines on an Image

drawRectangle(): Draw Rectangles on an Image

drawRotatedRectangle(): Draw Rotated Rectangles on an Image

drawText(): Draw Text on an Image

edgePreservingFilter(): Edge Preserving Filter

exp(): Exponential Generic for Image objects

extractChannel(): Extract Single Channel from Image

farneback(): Optical Flow Using Farneback's Algorithm

fillConvexPoly(): Fill Convex Polygon with Color in Image

fillPoly(): Fill Polygon with Color in Image

filter2D(): Image Convolution with Kernel

findChessboardCorners(): Find Calibration Chessboard in Image

findContours(): Find Contours in a Binary Image

findHomography(): Perspective Transformation Between Two Planes

findNonZero(): Find Non-Zero Pixels in an Image

findTransformECC(): Enhanced Correlation Coefficient-based Geometric Transform

findTransformORB(): ORB-based Geometric Transform

fitEllipse(): Fit an Ellipse Around a Set of 2D Points

flip(): Flip an Image

floodFill(): Fills a Connected Component with a Given Color.

fourcc(): Codec Name to FOURCC Code

fps(): Frame Rate of a Video

frame() `frame<-`(): Reader Head Position

full() empty(): Test for a Full/Empty Queue Object

gaussianBlur(): Blurs an Image Using a Gaussian Filter

getAffineTransform(): Affine Transform

getGaborKernel(): Gabor Filter Kernels

getOptimalNewCameraMatrix(): Camera Matrix Correction Using the Free Scaling Parameter

getPerspectiveTransform(): Perspective Transform

getStructuringElement(): Structuring Elements

getTextSize(): Calculate the Height and Width of a Text String

goodFeaturesToTrack(): Good Features to Track

grabCut(): Segmentation with GrabCut Algorithm

histEq(): Histogram Equalization

histmatch(): Histogram Matching/Specification

houghCircles(): Hough Circle Detector

houghLinesP(): Probabilistic Hough Line Detector

huInvariants(): Calculate Seven Hu Moments Invariants

add() subtract() multiply() divide() absdiff(): Arithmetic Functions for Images

bitAnd() bitOr() bitNot(): Logical Functions for Images

bitMin() bitMax(): Element-Wise Minimums and Maximums

imhist(): Multichannel Histogram of an Image

improfile(): Pixel Values Along a Line Segment

`%i+%` `%i-%` `%i*%` `%i/%` `%i^%`: In Place Arithmetic Operators for Images

`%i>%` `%i<%` `%i>=%` `%i<=%` `%i==%` `%i!=%`: In Place Comparison Operators for Images

`%i&%` `%i|%` not(): In Place Logical Operators for Images

inRange(): Range Thresholding

inpaint(): Reconstruct Image Region from Region Neighborhood

insertChannel(): Insert Single Channel into Image

invert(): Invert Colors

invertFourcc(): FOURCC Code to Codec Name

isBlob(): Test for a Blob Object

isImage(): Test for an Image Object

isQueue(): Test for a Queue object

isStream(): Test for a Stream Object

isVideo(): Test for a Video Object

isVideoStack(): Test for a VideoStack Object

isVideoWriter(): Test for a VideoWriter Object

laplacian(): Calculates the Laplacian of an Image

log(): Logarithm Generic for Image objects

matchKeypoints(): Match Keypoints

matchShapes(): Compare Two Shapes

matchTemplate(): Template Matching

mean(<Rcpp_Image>): Mean Value of the Pixels in an Image

mean(<list>): Mean of Images in a List

medianBlur(): Blurs an Image Using a Median Filter

merge(): Merge Separate Channels into an Image

min(<Rcpp_Image>) max(<Rcpp_Image>) range(<Rcpp_Image>): Maxima and Minima of an Image

minAreaRect(): Fit a Rectangle Around a Set of 2D Points

minMaxLoc(): Coordinates of the Maxima and Minima of an Image

moments(): Calculate the Moments of a Shape

morph(): Morphological Operations

newDisplay(): Open New Image Display

niBlackThreshold(): Niblack Thresholding

nrow.Rcpp_Image() ncol.Rcpp_Image() nchan(): The Number of Rows/Columns/Channels of an Image

ones(): Create a One-Filled Image

pget(): Return Pixel Value at Specified Locations

pixelsInContour(): Which Pixels are Inside a Contour

plot(<Rcpp_Image>): Plot Rvision Images

plot(<blob>): Plot Blobs

plotOF(): Plot Optical Flow Arrays

polarToCart(): Convert Polar Coordinates to Cartesian

pow(): Power Function

pset(): Set Pixel Value at Specified Locations

pyrDown(): Pyramid Downsampling

pyrUp(): Pyramid Upsampling

nrow.Rcpp_Queue() ncol.Rcpp_Queue() length(<Rcpp_Queue>): The Number of Rows/Columns and Length of a Queue

randn(): Random Normal Image

randu(): Random Uniform Image

readFrame(): Read Specific Video Frame

readHIS(): Read HIS Image from Varex Imaging X-ray Panels

readMulti(): Read a Multi-Page Image

readNext(): Read Next Frame of an Object

reduce(): Reduces a 2D Image to a 1D Image

release(): Release Object from Memory

reset(): Reset a Queue

resize(): Resize an Image

rotate(): Image Rotation In 90-Degree Increments

rotateScale(): Image Rotation and Scaling

scharr(): Calculates an Image Derivatives Using a Scharr Operator

selectROI(): Select a Region of Interest in an Image

sepFilter2D(): Image Filtering with a Separable Linear Filter

setProp() getProp(): Set/Get Video Properties

setTo(): Set All or Some of an Image to the Specified Value

simpleBlobDetector(): Simple Blob Detector

sobel(): Calculates an Image Derivatives Using an Extended Sobel Operator

spatialGradient(): First Order Derivatives of an Image with the Sobel Operator

split(): Split an Image into Separate Channels

sqrBoxFilter(): Blurs an Image Using a Square Box Filter

sqrt(): Square Root Generic for Image objects

nrow.Rcpp_Stream() ncol.Rcpp_Stream(): The Number of Rows/Columns of a Stream

`[`(<Rcpp_Image>) `[<-`(<Rcpp_Image>): Extract or Replace Parts of an Image

`[[`(<VideoStack>) `[[<-`(<VideoStack>) `[`(<VideoStack>) `[<-`(<VideoStack>): Extract or Replace Videos in Video Stacks

subImage(): Extract Subimage

sum(): Sum Generic for Image objects

thinning(): Thinning

threshold(): Thresholding

tile(): Repeat Image

timelapse(): Make Timelapse from Stream Object

undistort(): Transform an Image to Compensate for Lens Distortion

undistortPoints(): Transform Coordinates to Compensate for Lens Distortion

videoStack(): Create an Object of Class VideoStack

nrow.Rcpp_Video() ncol.Rcpp_Video() nframes(): The Number of Rows/Columns/Frames of a Video

nrow.VideoStack() nrow.VideoStack() nframes(<VideoStack>): The Number of Rows/Columns/Frames of a VideoStack

nrow.Rcpp_VideoWriter() ncol.Rcpp_VideoWriter(): The Number of Rows/Columns of a Video Writer

warpAffine(): Affine Transformation

warpPerspective(): Perspective Transformation

watershed(): Image Segmentation Using the Watershed Algorithm

write.Image(): Image Output

writeFrame(): Write Frame to Output Video

writeMulti(): Write a Multi-Page Image

writerOuput(): Output File of a Video Writer

zeros(): Create a Zero-Filled Image