Function reference • OpenImageR

All functions
`Augmentation()`	image augmentations of a matrix, data frame, array or a list of 3-dimensional arrays (where the third dimension is equal to 3)
`GaborFeatureExtract`	Gabor Feature Extraction
`HOG()`	calculate the HOG (Histogram of oriented gradients) for an image
`HOG_apply()`	calculate the HOG (Histogram of oriented gradients) for a matrix, array or a folder of images
`List_2_Array()`	convert a list of matrices to an array of matrices
`MinMaxObject()`	minimum and maximum values of vector, matrix, data frame or array
`NormalizeObject()`	normalize a vector, matrix or array (in the range between 0 and 1)
`RGB_to_HSV()`	Conversion of RGB to HSV colour type
`RGB_to_Lab()`	Conversion of RGB to Lab colour type
`ZCAwhiten()`	zca whiten of an image
`average_hash()`	calculation of the 'average hash' of an image
`convolution()`	convolution
`cropImage()`	crop an image
`dhash()`	calculation of the 'dhash' of an image
`dilationErosion()`	Dilation or Erosion of an image
`down_sample_image()`	downsampling an image ( by a factor ) using gaussian blur
`edge_detection()`	edge detection (Frei_chen, LoG, Prewitt, Roberts_cross, Scharr, Sobel)
`flipImage()`	flip image horizontally or vertically
`gamma_correction()`	Gamma correction
`getAffineTransform()`	Get Affine Transform
`hash_apply()`	calculate the binary or the hexadecimal hash for a matrix, array or a folder of images for the average_hash, phash or dhash functions
`imageShow()`	display an image
`image_thresholding()`	image thresholding
`invariant_hash()`	invariant hashing (caclulation of the hamming or the levenshtein distance when the image is flipped, rotated or cropped)
`load_binary()`	loads either 2- or 3-dimensional data (where the third dimension is equal to 3) from a binary file
`norm_matrix_range()`	Normalize a matrix to specific range of values
`padding()`	Padding of matrices or n-dimensional arrays with a user specified value
`phash()`	calculation of the 'phash' of an image
`readImage()`	this function reads various types of images
`resizeImage()`	resize an image using the 'nearest neighbors' or the 'bilinear' method
`rgb_2gray()`	convert an RGB image to Gray
`rotateFixed()`	Rotate an image by 90, 180, 270 degrees
`rotateImage()`	Rotate an image using the 'nearest' or 'bilinear' method
`superpixel_bbox()`	Bounding box for the superpixel labels
`superpixel_bbox_subset()`	Bounding box for a subset of superpixel labels
`superpixels()`	SLIC and SLICO superpixel implementations
`translation()`	image translation
`uniform_filter()`	uniform filter (convolution with uniform kernel)
`verify_image_extension()`	Verify that the input image extension is valid
`warpAffine()`	Warp Affine
`writeImage()`	This function writes 2- or 3-dimensional image (where the third dimension is equal to 3) data to a file

Reference

All functions