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SimPlatform/Parameters.py

+# -*- coding: utf-8 -*-
+"""
+Created on Wed Aug 15 13:57:37 2018
+
+@author: Yi Zhang
+"""
+
+"""Parameters for ultrasonic device"""
+        
+"""
+1.pixel: size of pixel of screen. unit=mm, pixel[0] corresponds to y dimension,
+         pixel[1] corresponds to x dimension.
+2.psf: the standard variation of the point spread function. psf[0] corresponds to
+        y dimension, psf[1] corresponds to x dimension.
+3.shape: shape of the screen
+4.dt: duration of each frame
+5.amptissue: mean amplitude of tissue
+6.c2: mean amplitude
+"""        
+dt=0.01
+params_default={        
+        'pixel':(0.12,0.12),'psf':(0.14,0.32),'shape':(100,100),
+        'dt':dt, 'amptissue':1, 'ampbubbles':3, 'ampnoise':0.1
+        }
+
+"""Parameters for tissue"""
+        
+"""
+1.ev: envelope of the amplitude of tissue
+2.sdv_phi: standard variation for initial phase of tissue, unit: degree
+3.sdv_lp: the standard variation of 2d gaussian kernel as the low pass filter of amplitude,
+        unit mm
+4.kerflow: the size of probability kernel to represent flowing of tissue cells
+5.sdv_df: the standard variation of the change of flowing kernel
+6.minf: the minimum value of probability in flowing filter
+7.block: the size of block to share a common flow pattern
+8.numk: number of kernel to simulate the pattern of flow
+"""
+        
+params_tissue={        
+        'sdv_phi':15, 'sdv_lp':0.2, 'kerflow':3, 'sdv_df':0.3/3, 'minf':0.1,
+        'block':4, 'numk':4
+        }
+
+"""Parameters for bubbles"""
+        
+"""
+1.vmean: mean velocity of the bubbles. unit=mm/s
+2.density: maximum density of bubbles. unit=cm^(-2)
+3.muv: expectation of the envelope of velocity
+4.sigmav: standard variation of the envelope of velocity
+"""
+
+params_bubbles={
+        #bubbles
+        'vmean':0.24/dt,'density':130,'p_birth':0.3,'p_death':0.3,
+        'maxBirth':3,'maxDeath':3, 'sdv_phib':5,
+        'muv':1,'sigmav':1,'sigmaa':0.05*(0.12/dt)/dt,'sigmaA':1,'bubbleAM':0.1
+        }
+
+params_ev={
+        'sigrange':[15*0.14,30*0.14,15*0.16,30*0.16], 'numev':5
+        } 
+
+params_default.update(params_tissue)
+params_default.update(params_bubbles)
+params_default.update(params_ev)