Image dimensions
Replace part of an image with another
Photograph of sailing boats from Kodak set
Select a region of homogeneous colour
Save image
Remove empty dimensions from an array
Blur image anisotropically, in an edge-preserving way.
Compute image gradient.
Return image hessian.
Autocrop image region
Split a video into separate frames
Shift image content.
Renormalise image
Image warping
Create an image from a data.frame
A cross-shaped stencil
Convert an RGB image to grayscale
Convert cimg to spatstat im object
Array subset operator for cimg objects
Convolve image by filter.
Compute image hessian.
Return pixel values in a neighbourhood defined by a stencil
Convert a cimg object to a raster object
Draw image on another image
Split an image along axis, apply function, return a data.frame
Combining images
Rotate image by an arbitrary angle.
Various shortcuts for extracting colour channels, frames, etc
Resize image uniformly
Permute image axes
Split an image along a certain axis (producing a list)
Compute field of diffusion tensors for edge-preserving smoothing.
Compute Haar multiscale wavelet transform.
Compute the Discrete Fourier Transform of an image
Estimate displacement field between two images.
Return image patches
Play a video
Create an image by sampling a function
Generate (Gaussian) white-noise image
Add colour channels to an grayscale image
Compute image gradient
Display image using CImg library
Blur image with the median filter.
Blur image with a box filter (square window)
Return pixel value at coordinates
Return coordinates of subset of pixels
Threshold grayscale image
Apply recursive Deriche filter.
Bucket fill
Convert an image in spatstat format to an image in cimg format
Combine a list of images into a single image
Correlation of image by filter
Blur image isotropically.
Select part of an image
Blur image with a box filter.
Create an image of custom size by filling in repeated values
Sharpen image.
Colour space conversions in imager
Compute watershed transform.
Center stencil at a location
Load image from file or URL
Erode/dilate image by a structuring element.
Apply function to each element of a list, then combine the result as an image by appending along specified axis
imager: an R library for image processing, based on CImg
Interpolate image values
Resize image to new dimensions.
If pd[x,y,z,v]<0, it corresponds to a percentage of the original size (the default value is -100).
Pad image with n pixels along specified axis
Display an image using base graphics
Mirror image content along specified axis
Compute the periodic part of an image, using the periodic/smooth decomposition of Moisan (2009)
Display image list using CImg library
Convert a pixel image to a data.frame
Capture the current R plot device as a cimg image
Split an image along axis, apply function, return a list
Return the pixel grid for an image
Label connected components.
Rotate image by an arbitrary angle, around a center point.
Split an image, apply function, recombine the results as an image
Turn an numeric array into a cimg object
Split a colour image into a list of separate channels
Linear index in internal vector from pixel coordinates
Convert to cimg object
Compute Euclidean distance function to a specified value.
Split an image along a certain axis (producing a list)
Young-Van Vliet recursive Gaussian filter.
Create a cimg object
Warp image
Generates a "dirac" image, i.e. with all values set to 0 except one.