Thank you very much.

You clearly explained what I wanted to do.

>2. The human model of each frame is separated and recognized as a still image. --- Why are you converting the human model to a still image?

>4. Export all edited images as obj file --- Again, not sure what you mean here. You want to convert an image to an OBJ file? 

The reason I do this is that I want a static sampled image (obj) of the breathing moving model.

I can't write purpose. sorry.

I've found the easiest and most accurate way to create morphs as you taught me, rather than editing the coordinates of the model.

I will try the method you taught me.