The only way to get a digital image into the Cabinet Editor is using a Display Cube
Open the cabinet Editor
Choose Display Cubes
enter the width, length and depth you want your image
Click on Select Image
Click on Add Image and locate the image you want to use
Open that image and choose a directory (or enter the name of a new directory to create) to save it to.(remember the directory)
Click OK then locate that directory and select your image
Click OK
Select the Stretched Radio button
Click OK
Your image is now in the Cabinet Editor
If you are wanting to import an image and use it to trace for a cabinet, that is not possible in eCabinets.