histEq | R Documentation |
histEq
performs the histogram equalization of an image.
The function equalizes the histogram of the input image using the following
algorithm:
Calculate the histogram of the image.
Normalize the histogram so that the sum of histogram bins is 255.
Compute the integral of the histogram.
Transform the image using the integral of the histogram as a look-up table.
histEq(image, target = "new")
image |
An 8-bit (8U) |
target |
The location where the results should be stored. It can take 3 values:
|
If target="new"
, the function returns an Image
object. If target="self"
, the function returns nothing and modifies
image
in place. If target
is an Image
object,
the function returns nothing and modifies that Image
object in
place.
Simon Garnier, garnier@njit.edu
Image
, histmatch
, LUT
balloon <- image(system.file("sample_img/balloon1.png", package = "Rvision"))
balloon_eq <- histEq(balloon)
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