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Freenect or depth_image_proc to process depth image

My depth image comes from meta glass which runs on the windows system. I already transmitted my data image from windows to linux and had it published on the topic. Is that possible that I directly change the subscribe topic of freenect_camera to the topic I build and then it still works? Or how can I use depth_image_proc package to convert depth image to point cloud? Thank you for any suggestion.