k-Wave

1. coreyjkelly
   

   Member
   Joined: Jul '14
   Posts: 1

   Thanks so much for providing these tools to the community!

   I understand that with the compiled binaries, defining a sensor by an NxM matrix of coordinates hasn't been implemented.

   I won't go so far as to call this a "feature request" - rather, I'm wondering if there's a big hurdle to implementing this if I were to try it myself. I figure someone else must have considered it!

   I'm trying to model a large, curved transducer, so scaling up my simulation until each sensor is in a separate voxel would be very expensive computationally.

   Posted 5 years ago #

2. Bradley Treeby
   

   Developer
   Joined: Mar '10
   Posts: 1,643

   Hi coreyjkelly,

   We've done this in an ad-hoc way in the past by calculating the equivalent binary sensor mask that contains the neighbouring points needed for interpolating the pressure values to the Cartesian points, and then post-processing. I won't say that it was entirely straightforward, but is certainly one approach.

   Another approach is to use nearest-neighbour interpolation (e.g., convert the Cartesian sensor mask to a binary mask using cart2grid). This approach obviously comes with the caveat you are recording the pressure values at a slightly different point to that intended.

   I'll give some thought to how this might be done more efficiently in the medium term. We have a new kWaveArray class under development (supported by both MATLAB and C++ codes), so it could possibly form part of this.

   Brad.

   Posted 5 years ago #

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