ADAPT_HIST_EQUAL - Performs adaptive histogram equalization
BANDPASS_FILTER - Applies a bandpass filter to a one-channel image.
BANDREJECT_FILTER - Applies a band reject filter on a one-channel image.
BUTTERWORTH - Returns the absolute value of the low-pass Butterworth kernel.
BYTSCL - Scales all values of an array into range of bytes.
CANNY - Implements the Canny edge-detection algorithm.
CONVOL - Convolves two vectors or arrays.
DIGITAL_FILTER - Calculates coefficients of a non-recursive, digital filter.
ESTIMATOR_FILTER - Applies an order statistic noise-reduction filter to a one-channel image.
FFT - Returns the Fast Fourier Transform of an array.
HILBERT - Constructs a Hilbert transform.
HIST_EQUAL - Histogram-equalizes an image.
IR_FILTER - Performs the infinite or finite impulse response filter on data.
LEAST_SQUARES_FILTER - Reduces degradation and noise in an image based on the mean and variance of the degradation and noise.
LEEFILT - Performs the Lee filter algorithm on an image array.
MEAN_FILTER - Applies mean filter noise reduction on a one- or multi-channel image.
MEDIAN - Returns the median value of Array or applies a median filter.
ROBERTS - Returns an approximation of Roberts edge enhancement.
SMOOTH - Smooths with a boxcar average.
SOBEL - Returns an approximation of Sobel edge enhancement.
UNSHARP_MASK - Performs an unsharp-mask sharpening filter on a two-dimensional array or a truecolor image.
WIENER_FILTER - Reduces degradation and noise in an image by statistically comparing it with an undegraded image.
CONTOUR - Draws a contour plot.
DEFROI - Defines an irregular region of interest of an image. (Direct Graphics)
HISTOGRAM - Computes the density function of an array.
HOUGH - Returns the Hough transform of a two-dimensional image.
IMAGE_STATISTICS - Computes sample statistics for a given array of values.
ISOCONTOUR - Interprets the contouring algorithm found in the IDLgrContour object.
ISOSURFACE - Returns topologically consistent triangles by using oriented tetrahedral decomposition.
LABEL_REGION - Labels regions (blobs) of a bi-level image.
MAX - Returns the value of the largest element of Array.
MEDIAN - Returns the median value of Array or applies a median filter.
MIN - Returns the value of the smallest element of an array.
PROFILES Procedure - Interactively examines image profiles.
RADON - Returns the Radon transform of a two-dimensional image.
REGION_GROW - Perform region growing.
SEARCH2D - Finds “objects” or regions of similar data within a 2D array.
THIN - Returns the “skeleton” of a bi-level image.
UNIQ - Returns subscripts of the unique elements in an array.
WATERSHED - Applies the morphological watershed operator to a grayscale image.
WHERE - Returns subscripts of nonzero array elements.
DISSOLVE - Provides a digital “dissolve” effect for images.
IDLgrImage - Creates an image object that represents a mapping from a 2D array of data values to a 2D array of pixel colors.
IDLgrPalette - Represents a color lookup table that maps indices to red, green, and blue values.
IIMAGE - Creates an iTool and associated user interface (UI) configured to display and manipulate image data.
RDPIX - Interactively displays image pixel values. (Direct Graphics)
SMOOTH - Creates a scrolling graphics window for examining large images.
TV - Displays an image. To scale and display the image, use TVSCL. (Direct Graphics)
TVCRS - Manipulates the image display cursor. (Direct Graphics)
TVLCT - Loads display color tables. (Direct Graphics)
TVSCL - Scales and displays an image. (Direct Graphics)
XOBJVIEW - Displays object viewer widget.
XOBJVIEW_ROTATE - Programmatically rotate the object currently displayed in XOBJVIEW.
XOBJVIEW_WRITE_IMAGE - Write the object currently displayed in XOBJVIEW to an image file.
ZOOM - Zooms portions of the display. (Direct Graphics)
ZOOM_24 - Zooms portions of true-color (24-bit) display. (Direct Graphics)
CONGRID - Resamples an image to any dimensions.
EXPAND - Shrinks/expands image using bilinear interpolation.
EXTRAC - Returns sub-matrix of input array. Array operators (e.g., * and :) should usually be used instead.
INTERPOLATE - Returns an array of interpolates.
INVERT - Computes the inverse of a square array.
POLY_2D - Performs polynomial warping of images.
POLYWARP - Performs polynomial spatial warping.
REBIN - Resizes a vector or array by integer multiples.
REFORM - Changes array dimensions without changing the total number of elements.
REVERSE - Reverses the order of one dimension of an array.
ROT - Rotates an image by any amount.
ROTATE - Rotates/transposes an array in multiples of 90 degrees.
SHIFT - Shifts elements of vectors or arrays by a specified number of elements.
TRANSPOSE - Transposes an array.
WARP_TRI - Warps an image using control points.
DILATE - Implements morphologic dilation operator on binary and grayscale images.
ERODE - Implements the erosion operator on binary and grayscale images and vectors.
LABEL_REGION - Labels regions (blobs) of a bi-level image.
MORPH_CLOSE - Applies closing operator to binary or grayscale image.
MORPH_DISTANCE - Estimates N-dimensional distance maps, which contain for each foreground pixel the distance to the nearest background pixel, using a given norm.
MORPH_GRADIENT - Applies the morphological gradient operator to a grayscale image.
MORPH_HITORMISS - Applies the hit-or-miss operator to a binary image.
MORPH_OPEN - Applies the opening operator to a binary or grayscale image.
MORPH_THIN - Performs a thinning operation on binary images.
MORPH_TOPHAT - Applies top-hat operator to a grayscale image.
WATERSHED - Applies the morphological watershed operator to a grayscale image.
CW_DEFROI - Creates compound widget used to define region of interest. (Direct Graphics)
DEFROI - Defines an irregular region of interest of an image. (Direct Graphics)
DRAW_ROI - Draws region or group of regions to current Direct Graphics device. (Direct Graphics)
IDLanROI - Represents a region of interest used for analysis.
IDLanROIGroup - Analytical representation of a group of regions of interest.
IDLgrROI - Object graphics representation of a region of interest.
IDLgrROIGroup - Object Graphics representation of a group of regions of interest.
LABEL_REGION - Labels regions (blobs) of a bi-level image.
REGION_GROW - Grows an initial region to include all areas that match specified constraints.
XROI - Utility for defining regions of interest, and obtaining geometry and statistical data about these ROIs.