# One Image Operator Edit Control

The IPOneImage edit control provides a graphical user interface to the IPOneImageTool class which implements basic image processing operations such as Gaussian smoothing, high-pass filtering, and image quantization. The following figure shows an example of the edit control after performing image quantization on a run-time image.

See the topic Control Reference for a description of the buttons along the top of the edit control. In addition, the IPOneImage edit control supports the following image buffers:

- The Current.InputImage buffer contains the current image with any enclosing region graphics.
- The LastRun.InputImage buffer contains the result from the last execution of the tool.
- The LastRun.OutputImage buffer contains the results of the tool after it performs the image processing operations.

Note:

- The coordinate space tree of the output image is adjusted to preserve the relationship between root space and image features. See the topic Image Processing and Coordinate Spaces for more information.
- The edit control allows you to pick which operators process the input image, in order. The output of the first operator becomes the input image to the second operator, and so on.
- Some image-processing operators support image masking.
- If the input region for any operator causes the image to become cropped after processing, then any masking parameters or offsets for subsequent operators will be applied using the new coordinates of the cropped output image.

See the following topics for more information: