Software Collimation options decide the image size (width and height) of an image collimated(cropped) by software. Please check the below table. The yellow overlayed area will be sent to the selected storage.

None Cut
An image will be sent to the selected storage in the original image size regardless of how the image has been cropped in VXvue. An image will be sent to the selected storage in the cropped image size.
Fill Fill & Center
An image will be sent to the selected storage in the original image size, but the cropped area will be filled with black color. An image will be sent to the selected storage in the original image size, but the interesting area will be centered, and the cropped area filled with black color.