An Image Processing Toolkit

Augmentation | image augmentations of a matrix, data frame, array or a list... |

average_hash | calculation of the 'average hash' of an image |

convolution | convolution |

cropImage | crop an image |

crop_image_secondary | crop an image in R [ for RGB or grey images ] |

delationErosion | Delation or Erosion of an image |

dhash | calculation of the 'dhash' 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,... |

flipImage | flip image horizontally or vertically |

func_chech_range | function to check the range of values of an image or... |

func_transform | secondary function for HOG_apply |

gamma_correction | Gamma correction |

gaussian_kernel | gaussian-kernel |

hash_apply | calculate the binary or the hexadecimal hash for a matrix,... |

HOG | calculate the HOG (Histogram of oriented gradients) for an... |

HOG_apply | calculate the HOG (Histogram of oriented gradients) for a... |

imageShow | display an image |

image_thresholding | image thresholding |

invariant_hash | invariant hashing (caclulation of the hamming or the... |

laplacian_kernels | laplacian kernels |

List_2_Array | convert a list of matrices to an array of matrices |

MinMaxObject | minimum and maximum values of vector, matrix, data frame or... |

NormalizeObject | normalize a vector, matrix or array (in the range between 0... |

norm_range_gauss | normalize in specific range of values |

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... |

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 |

runUI | launcher for the shiny application |

sec_gaus_bl | secondary function for downsampling |

sec_resiz_array | secondary function for 'resizeImage' [ array ] |

switch_filter | secondary function for edge_detection function |

switch_hashing | if-else function for hashing |

switch_invariant | secondary function for invariant_hash |

translation | image translation |

uniform_filter | uniform filter (convolution with uniform kernel) |

writeImage | This function writes 2- or 3-dimensional image data to a file |

ZCAwhiten | zca whiten of an image |

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