|What's New in IDL 6.4: New Features in IDL 6.4|
The CDF_EPOCH_COMPARE function compares two epoch (date and time) values and returns an integer value of 1, 0, or -1.
The CDF_EPOCH_DIFF function compares two epoch (date and time) values and returns the difference in milliseconds (default) or microseconds.
The COLOR_EXCHANGE procedure replaces image pixels of a given color with pixels of a new color.
The COLOR_RANGE_MAP function maps all the pixels of an image to another set of pixels, using source and target ranges to control the mapping.
The COLORIZE_SAMPLE function colorizes a grayscale image by matching luminance levels with an RGB sample table.
The COLORMAP_GRADIENT function maps an image into a specified luminance-based gradient.
The COLORMAP_ROTATION function maps pixels within a given hue range to another hue range, using the HSV hue component.
The EDGE_DOG function applies the Difference of Gaussians filter to a 2D image array.
Applies an "embossed" convolution operator to a 2D image array.
Applies a Laplacian operator to a 2D image array.
The NOISE_HURL function introduces noise into an image by changing randomly selected pixels to random colors.
The NOISE_PICK function introduces noise into an image by picking randomly selected pixels to be replaced by a neighboring pixel from a random direction.
The NOISE_SCATTER function introduces noise into an image by applying normally distributed noise to the entire image.
The NOISE_SLUR function introduces noise into an image by selecting random pixels to be replaced by a neighboring pixel from a random location in the row above.
Determines whether an object class implements or inherits a specified method or methods.
The PREWITT function returns an approximation to the Prewitt edge enhancement operator for images.
The SHIFT_DIFF function applies a shift-difference filter to a 2D image array.
IDL Online Help (March 06, 2007)