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Mathematica > Data Manipulation > Image Processing & Analysis > Image Representation > ImageSubtract >

ImageSubtract

subtracts a constant amount x from each channel value in image.

gives an image in which each pixel is obtained by subtracting the values of the corresponding pixels in

and

If the image dimensions are different, ImageSubtract subtracts from the center of .

If or is a single-channel image, its values are subtracted from the values in each channel of the other image in ImageAdd.

If and are both multichannel images, the values in each channel are subtracted separately.

ImageSubtract gives an image with the same underlying data type as image, clipping or truncating values if necessary.

ImageSubtract gives an image with the largest type of either or , clipping or truncating values if necessary.

Subtract a binary mask from a color photo:

Subtracting a constant amount from each color channel darkens an image:

Subtract a binary mask from a color photo:

Out[1]=

Subtracting a constant amount from each color channel darkens an image:

Out[1]=

Create an unsharp mask by subtracting a blurred version:

Add the unsharp mask to the original image:

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