http://www.k-wave.org/forum/topic/about-sensor-mask Support for the k-Wave MATLAB toolbox en-US Wed, 13 May 2026 01:04:30 +0000 http://bbpress.org/?v=1.0.2 q http://www.k-wave.org/forum/search.php http://www.k-wave.org/forum/topic/about-sensor-mask#post-4737 Mon, 22 Sep 2014 20:31:55 +0000 Bradley Treeby 4737@http://www.k-wave.org/forum/ <p>Hi Hamid,</p> <p>By default, the sensor data is simply sampled at each time point at the grid points defined by <code>sensor.mask</code>. No other processing is applied (unless <code>sensor.directivity_angle</code> or <code>sensor.frequency_response</code> are defined).</p> <p>Brad. </p> http://www.k-wave.org/forum/topic/about-sensor-mask#post-4736 Mon, 22 Sep 2014 19:49:39 +0000 Hamid 4736@http://www.k-wave.org/forum/ <p>Hello,</p> <p>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?<br /> Thanks, </p> http://www.k-wave.org/forum/topic/about-sensor-mask#post-4625 Tue, 08 Jul 2014 14:44:16 +0000 Bradley Treeby 4625@http://www.k-wave.org/forum/ <p>Hi Reza,</p> <p>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:</p> <pre><code>% load image filename = [getkWavePath &#39;examples/example_source_one.png&#39;]; im = loadImage(filename); % convert to binary sensor mask mask = zeros(size(im)); mask(im &gt; 0) = 1;</code></pre> <p>Let me know if you get stuck.</p> <p>Brad. </p> http://www.k-wave.org/forum/topic/about-sensor-mask#post-4624 Tue, 08 Jul 2014 13:58:28 +0000 Reza 4624@http://www.k-wave.org/forum/ <p>Hello<br /> I want to use a specific shape of sensor mask as picture file. I write the code as follow&gt;<br /> sensor.mask = loadImage('beads5.jpg');</p> <p>But the code doesnt work and some errors appeas. I want to know is there anz specific limitation for sensor.mask.<br /> For example I made a function name CI and write the code as follow:<br /> sensor.mask = loadImage(CI);</p> <p>Again it did not work.</p> <p>Thanks </p>