Comments (2)
Hello @USTCWzy,
Apologies for the delay on my end.
This is a really important question. Please find my comments below.
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Our work on this paper started by further analyzing BodyPressure. We noticed that BodyPressure 3D pressure map estimates formed by projecting the predicted 2D pressure image on top of the predicted mesh were better than the ones formed by projecting the ground truth 2D pressure image onto the predicted mesh. My reasoning for this is that the mesh estimates are many times not in conjunction with the ground truth 2D pressure image. We reasoned that learning the pressure map jointly with the predicted mesh would better tune the mesh and pressure estimates to be in conjunction with each other. Alas, I have found the same to be true for BodyMAP, i.e. the predicted 3D pressure map is better than the 3D pressure map formed by projecting 2D pressure image on top of the predicted mesh. This empirical evidence leads to more importance to the 3D pressure maps predicted by the model, and calls for further analysis and possibly training with larger datasets.
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Though we used multiple modalities for the main model, our approach achieves good performance even with just depth modality. As pressure sensors are quite expensive, the ability to predict 3D pressure maps jointly with the mesh with just depth modality is super beneficial for deployment.
We are also now exploring possibilities of using other modalities than 2D pressure image as input, allowing for higher performance and removing the expensive 2D pressure image inputs. -
As illustrated in the appendix section, BodyPressure requires the iterative projection at inference time, making it very slow to run. BodyMAP instead predicts the 3D pressure map in a single forward pass, achieving real-time performance. A real-time visualization of pressure onto the body can be helpful in nursing homes and such facilities, and potentially enhance the pressure injury prevention process.
Best,
Abhishek
from bodymap.
Thanks very much for your reply!
from bodymap.
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from bodymap.