Hello
I want to use a specific shape of sensor mask as picture file. I write the code as follow>
sensor.mask = loadImage('beads5.jpg');
But the code doesnt work and some errors appeas. I want to know is there anz specific limitation for sensor.mask.
For example I made a function name CI and write the code as follow:
sensor.mask = loadImage(CI);
Again it did not work.
Thanks
Hi Reza,
There are two requirements for defining a sensor mask in this way. First, your image must be the same size as the computational grid (or you should trim/pad it so they match). Second, the mask must be binary, i.e., a matrix of ones and zeros. For example:
% load image
filename = [getkWavePath 'examples/example_source_one.png'];
im = loadImage(filename);
% convert to binary sensor mask
mask = zeros(size(im));
mask(im > 0) = 1;Let me know if you get stuck.
Brad.
Hello,
Could you please let me know if the signals recorded at the positions of the transducers are pure pressure? Or you have considered the effect of transducer too? In other words, in the Homogeneous Propagation Medium Example, the matrix sensor_data contains the pressure or the pressure convolved the effect of transducer?
Thanks,
Hi Hamid,
By default, the sensor data is simply sampled at each time point at the grid points defined by sensor.mask. No other processing is applied (unless sensor.directivity_angle or sensor.frequency_response are defined).
Brad.
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