Is it possible to directly use bpycv in bpy instead of using the scripttext in blender

[Leon-LXA]

I have my project just using bpy to generate rendered images instead of opening blender. I need to generate depth image as 16bit to represent the depth information as milimeter but bpy seems only output normalized depth information, not the real true depth values. It's hard for me to adjust my project into the text editor in blender.