| add.colour | Add colour channels to a grayscale image or pixel set |
| as.cimg | Convert to cimg object |
| as.cimg.array | Turn an numeric array into a cimg object |
| as.cimg.data.frame | Create an image from a data.frame |
| as.cimg.function | Create an image by sampling a function |
| as.cimg.raster | Convert a raster object to a cimg object |
| as.data.frame.cimg | Convert a pixel image to a data.frame |
| as.data.frame.imlist | Convert image list to data.frame |
| as.data.frame.pixset | Methods to convert pixsets to various objects |
| as.igraph.cimg | Form a graph from an image |
| as.igraph.pixset | Form an adjacency graph from a pixset |
| as.imlist | Convert various objects to image lists |
| as.pixset | Methods to convert various objects to pixsets |
| as.raster.cimg | Convert a cimg object to a raster object for plotting |
| at | Return or set pixel value at coordinates |
| autocrop | Autocrop image region |
| bbox | Compute the bounding box of a pixset |
| blur_anisotropic | Blur image anisotropically, in an edge-preserving way. |
| boats | Photograph of sailing boats from Kodak set |
| boundary | Find the boundary of a shape in a pixel set |
| boxblur | Blur image with a box filter (square window) |
| boxblur_xy | Blur image with a box filter. |
| bucketfill | Bucket fill |
| cannyEdges | Canny edge detector |
| capture.plot | Capture the current R plot device as a cimg image |
| center.stencil | Center stencil at a location |
| channels | Split a colour image into a list of separate channels |
| ci | Concatenation for image lists |
| cimg | Create a cimg object |
| cimg2im | Convert cimg to spatstat im object |
| cimg.dimensions | Image dimensions |
| cimg.extract | Various shortcuts for extracting colour channels, frames, etc |
| cimg.use.openmp | Control CImg's parallelisation |
| circles | Add circles to plot |
| clean | Clean up and fill in pixel sets (morphological opening and... |
| colorise | Fill in a colour in an area given by a pixset |
| common_pixsets | Various useful pixsets |
| contours | Return contours of image/pixset |
| coord.index | Coordinates from pixel index |
| correlate | Correlation/convolution of image by filter |
| crop.borders | Crop the outer margins of an image |
| deriche | Apply recursive Deriche filter. |
| diffusion_tensors | Compute field of diffusion tensors for edge-preserving... |
| displacement | Estimate displacement field between two images. |
| display | Display object using CImg library |
| display.cimg | Display image using CImg library |
| display.list | Display image list using CImg library |
| distance_transform | Compute Euclidean distance function to a specified value. |
| draw_circle | Draw circle on image |
| draw_rect | Draw rectangle on image |
| draw_text | Draw text on an image |
| erode | Erode/dilate image by a structuring element. |
| extract_patches | Extract image patches and return a list |
| FFT | Compute the Discrete Fourier Transform of an image |
| flatten.alpha | Flatten alpha channel |
| frames | Split a video into separate frames |
| get_gradient | Compute image gradient. |
| get_hessian | Return image hessian. |
| get.locations | Return coordinates of subset of pixels |
| get.stencil | Return pixel values in a neighbourhood defined by a stencil |
| grab | Select image regions interactively |
| grapes-inr-grapes | Check that value is in a range |
| grayscale | Convert an RGB image to grayscale |
| grow | Grow/shrink a pixel set |
| gsdim | Grayscale dimensions of image |
| haar | Compute Haar multiscale wavelet transform. |
| highlight | Highlight pixel set on image |
| hough_circle | Circle detection using Hough transform |
| hough_line | Hough transform for lines |
| idply | Split an image along axis, map function, return a data.frame |
| iiply | Split an image, apply function, recombine the results as an... |
| ilply | Split an image along axis, apply function, return a list |
| im2cimg | Convert an image in spatstat format to an image in cimg... |
| imager | imager: an R library for image processing, based on CImg |
| imager.colourspaces | Colour space conversions in imager |
| imager.combine | Combining images |
| imager.replace | Replace part of an image with another |
| imager.subset | Array subset operator for cimg objects |
| imappend | Combine a list of images into a single image |
| imchange | Modify parts of an image |
| imcoord | Coordinates as images |
| imdirac | Generates a "dirac" image, i.e. with all values set to 0... |
| imdraw | Draw image on another image |
| imeval | Evaluation in an image context |
| imfill | Create an image of custom size by filling in repeated values |
| imgradient | Compute image gradient |
| imhessian | Compute image hessian. |
| iminfo | Return information on image file |
| imlap | Compute image Laplacian |
| imlist | Image list |
| imnoise | Generate (Gaussian) white-noise image |
| implot | Plot objects on image using base graphics |
| imrep | Replicate images |
| imrotate | Rotate an image along the XY plane. |
| imsharpen | Sharpen image. |
| imshift | Shift image content. |
| imsplit | Split an image along a certain axis (producing a list) |
| im_split | Split an image along a certain axis (producing a list) |
| imsub | Select part of an image |
| imwarp | Image warping |
| index.coord | Linear index in internal vector from pixel coordinates |
| inpaint | Fill-in NA values in an image |
| interact | Build simple interactive interfaces using imager |
| interp | Interpolate image values |
| is.cimg | Checks that an object is a cimg object |
| is.imlist | Check that an object is an imlist object |
| isoblur | Blur image isotropically. |
| is.pixset | Check that an object is a pixset object |
| label | Label connected components. |
| liply | Apply function to each element of a list, then combine the... |
| load.dir | Load all images in a directory |
| load.example | Load example image |
| load.image | Load image from file or URL |
| load.video | Load a video using ffmpeg |
| magick | Convert a magick image to a cimg image or image list and vice... |
| make.video | Make/save a video using ffmpeg |
| map_il | Type-stable map for use with the purrr package |
| medianblur | Blur image with the median filter. In a window of size n x n... |
| mirror | Mirror image content along specified axis |
| mutate_plyr | Mutate a data frame by adding new or replacing existing... |
| nfline | Plot a line, Hesse normal form parameterisation |
| pad | Pad image with n pixels along specified axis |
| patchstat | Return image patch summary |
| patch_summary_cimg | Extract a numerical summary from image patches, using CImg's... |
| periodic.part | Compute the periodic part of an image, using the... |
| permute_axes | Permute image axes |
| pipe | Pipe operator |
| pixel.grid | Return the pixel grid for an image |
| pixset | Pixel sets (pixsets) |
| play | Play a video |
| plot.cimg | Display an image using base graphics |
| plot.imlist | Plot an image list |
| px.flood | Select a region of homogeneous colour |
| px.na | A pixset for NA values |
| px.remove_outer | Remove all connected regions that touch image boundaries |
| RasterPackage | Convert a RasterLayer/RasterBrick to a cimg image/image list |
| renorm | Renormalise image |
| resize | Resize image |
| resize_uniform | Resize image uniformly |
| rm.alpha | Remove alpha channel and store as attribute |
| rotate_xy | Rotate image by an arbitrary angle, around a center point. |
| save.image | Save image |
| split_connected | Split pixset into connected components |
| squeeze | Remove empty dimensions from an array |
| stencil.cross | A cross-shaped stencil |
| threshold | Threshold grayscale image |
| vanvliet | Young-Van Vliet recursive Gaussian filter. |
| warp | Warp image |
| watershed | Compute watershed transform. |
| where | Return locations in pixel set |
