Convolution Dialog Box (Image Tool)

Image Processing Toolkit User Guide > Image Tool > Convolution Dialog Box (Image Tool)

Convolve an array with a kernel (or another array).

Convolution Kernel—An array used to convolve each value in the input image. The dimensions of the Convolution Kernel must be smaller than those of the input image, but they can be of any data type except string.

note	Use the Define Kernel dialog box to define the Convolution Kernel. Select Filter=>Define Kernel to bring up the Define Kernel dialog box.

Edge—Choose how edge effects are handled. Edge options include:

Copy—Copies the border of the input image to the output image.

Zero—Sets the border of the output image to zero.

Pad—The input image is padded before the filtering operation with the value specified using the Pad Value option.

Reduce—Returns a reduced-size image that is smaller than the input image by the kernel dimensions.

Pad Value—This option is active only when the Edge selection is Pad. The value used to pad the image. (Default: 0)

Create New Image—If this option is selected, the processed data is used to create a new image. Enter a suffix for the new image variable name in the text field provided.

Overwrite Image—If this option is selected, the current image is overwritten by the processed data.

X Sweet Spot—Enter the value for the filter window sweet spot in the x-direction.

Y Sweet Spot—Enter the value for the filter window sweet spot in the y-direction.

Mirror Kernel—If selected, the kernel is mirrored about the origin before the convolution operation.

Clipping—If set to No, the data type of the result is greater than the original image data type. This prevents overflow values in the resulting image from being clipped. If set to Yes, data values may be clipped.

Zero Negatives—If set, all negative values in the result are set to zero.

Variable Suffix—If the Create New Image option is selected, enter a suffix for the new image variable name. This suffix is added to the original variable name.

OK—Convolve the image and exit the dialog box.

Apply—Convolve the image, but do not exit the dialog box.

Cancel—Dismiss the dialog box without taking any action.

Help—Display online Help on the dialog box.

Version 2017.0