calculate the HOG (Histogram of oriented gradients) for a matrix, array or a folder of images
convert a list of matrices to an array of matrices
image augmentations of a matrix, data frame, array or a list of 3-dimensional arrays
calculate the HOG (Histogram of oriented gradients) for an image
Gamma correction
gaussian-kernel
laplacian kernels
normalize in specific range of values
crop an image in R [ for RGB or grey images ]
Delation or Erosion of an image
calculation of the 'phash' of an image
this function reads various types of images
image translation
uniform filter (convolution with uniform kernel)
zca whiten of an image
calculation of the 'average hash' of an image
calculation of the 'dhash' of an image
downsampling an image ( by a factor ) using gaussian blur
convolution
crop an image
function to check the range of values of an image or normalize an image
secondary function for HOG_apply
resize an image using the 'nearest neighbors' or the 'bilinear' method
convert an RGB image to Gray
Rotate an image by 90, 180, 270 degrees
Rotate an image using the 'nearest' or 'bilinear' method
image thresholding
invariant hashing (caclulation of the hamming or the levenshtein distance when the image is flipped, rotated or cropped)
if-else function for hashing
secondary function for invariant_hash
calculate the binary or the hexadecimal hash for a matrix, array or a folder of images for the average_hash, phash or dhash functions
display an image
launcher for the shiny application
secondary function for downsampling
secondary function for 'resizeImage' [ array ]
secondary function for edge_detection function
minimum and maximum values of vector, matrix, data frame or array
normalize a vector, matrix or array (in the range between 0 and 1)
edge detection (Frei_chen, LoG, Prewitt, Roberts_cross, Scharr, Sobel)
flip image horizontally or vertically
This function writes 2- or 3-dimensional image data to a file