particleContainer.py

# -*- coding: utf-8 -*-
"""
GEPARD - Gepard-Enabled PARticle Detection
Copyright (C) 2018  Lars Bittrich and Josef Brandt, Leibniz-Institut für 
Polymerforschung Dresden e. V. <bittrich-lars@ipfdd.de>    

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program, see COPYING.  
If not, see <https://www.gnu.org/licenses/>.
"""
import numpy as np
import operator
import os
from PyQt5 import QtWidgets

from analysis import importSpectra
from analysis.particleAndMeasurement import Particle, Measurement


class ParticleContainer(object):
    def __init__(self, datasetParent):
        super(ParticleContainer, self).__init__()
        self.datasetParent = datasetParent
        self.particles = []
        self.measurements = []
        self.inconsistentParticles = []
        
        self.typeHistogram = None
    
    def addEmptyMeasurement(self):
        newMeas = Measurement()
        self.measurements.append(newMeas)
        return self.measurements.index(newMeas)
    
    def clearParticles(self):
        self.particles = []
    
    def clearMeasurements(self):
        self.measurements = []

    def setMeasurementScanIndex(self, indexOfMeasurment, scanIndex):
        self.measurements[indexOfMeasurment].ramanScanIndex = scanIndex
    
    def setMeasurementPixelCoords(self, indexOfMeasurment, x, y):
        self.measurements[indexOfMeasurment].pixelcoord_x = x
        self.measurements[indexOfMeasurment].pixelcoord_y = y
    
    def getMeasurementScanindex(self, indexOfMeasurement):
        return self.measurements[indexOfMeasurement].getScanIndex()
    
    def getSpectraFromDisk(self):
        spectra = None
        specPath = self.datasetParent.getSpectraFileName()
        
        if os.path.exists(specPath):
            spectra = np.load(specPath)
        else:
            
            fname = QtWidgets.QFileDialog.getOpenFileName(QtWidgets.QWidget(), 'Select Spectra File', self.datasetParent.path, 'text file (*.txt)')[0]
            if fname:
                #TODO: implement a more elegant way of testing through the individual imports...
                try:
                    spectra, spectraNames = importSpectra.importWITecSpectra(fname)
                except ImportError:
                    try:
                        spectra, spectraNames = importSpectra.importRenishawSpectra(fname)
                    except ImportError:
                        try:
                            spectra, spectraNames = importSpectra.importPerkinElmerSpectra(fname)
                        except ImportError:
                            pass
                
            if spectra is not None:
                np.save(self.datasetParent.getSpectraFileName(), spectra)
        return spectra
    
    def initializeParticles(self, numParticles):
        self.particles = []
        for i in range(numParticles):
            newParticle = Particle()
            newParticle.index = i
            self.particles.append(newParticle)
    
    def setParticleContours(self, contours):
        assert len(self.particles) == len(contours)
        for index, particle in enumerate(self.particles):
            particle.contour = contours[index]
        
    def setParticleStats(self, particlestats):
        assert len(self.particles) == len(particlestats)
        #particlestats is list of [long, short, longellipse, shortellipse, cv2.contourArea(cnt)]
        for index, particle in enumerate(self.particles):
            particle.longSize_box = float(particlestats[index][0])
            particle.shortSize_box = float(particlestats[index][1])
            particle.longSize_ellipse = float(particlestats[index][2])
            particle.shortSize_ellipse = float(particlestats[index][3])
            particle.area = float(particlestats[index][4])
    
    def testForInconsistentParticles(self): #i.e., particles that have multiple measurements with different assignments
        self.inconsistentParticles = []
        for particle in self.particles:
            if not particle.measurementsHaveSameOrigAssignment():
                self.inconsistentParticles.append(particle)
        if len(self.inconsistentParticles) > 0:
            print('Warning, inconsistent particles found!')
            for particle in self.inconsistentParticles:
                print(f'Particle with index {particle.index} has the following assignments:')
                for assignment in particle.getOrigMeasurementAssignments():
                    print(assignment)
        else:
            print('All particles have consistent spectra assignments')
    
    def applyPixelScaleToParticleStats(self, pixelscale):
        for index, particle in enumerate(self.particles):
            particle.longSize_box *= pixelscale
            particle.shortSize_box *= pixelscale
            particle.longSize_ellipse *= pixelscale
            particle.shortSize_ellipse *= pixelscale
            particle.area *= pixelscale**2

    def applyHQITresholdToParticles(self, minHQI):
        for particle in self.particles:
            particle.applyHQITresholdToMeasurements(minHQI)
            
    def applyAssignmentListToParticleMeasurements(self, assignmentList):
        '''AssignmentList is list of spectra assignments in order of spectra indices'''
        indicesOfTransferredAssignments = [None]*len(assignmentList)
        for particle in self.particles:
            for meas in particle.getMeasurements():
                scanIndex = meas.getScanIndex()
                meas.setAssignment(assignmentList[scanIndex])
                indicesOfTransferredAssignments[scanIndex] = scanIndex
        assert not None in indicesOfTransferredAssignments
    
    def applyHQIListToParticleMeasurements(self, hqiList):
        '''HQI-List is list of spectra hqis in order of spectra indices'''
        indicesOfTransferredHQIs = [None]*len(hqiList)
        for particle in self.particles:
            for meas in particle.getMeasurements():
                scanIndex = meas.getScanIndex()
                meas.setHQI(hqiList[scanIndex])
                indicesOfTransferredHQIs[scanIndex] = scanIndex
        assert not None in indicesOfTransferredHQIs
    
    def reassignParticleToAssignment(self, particleIndex, newAssignment):
        particle = self.getParticleOfIndex(particleIndex)
        particle.setAllSpectraToNewAssignment(newAssignment)
    
    def getParticleOfIndex(self, index):
        try:
            particle = self.particles[index]
        except:
            print('failed getting particle')
            print('requested Index:', index)
            print('len particles', len(self.particles))
        assert particle.index == index, f'particle.index ({particle.index}) does match requested index in particleList ({index})' 
        return particle
    
    def getParticleIndexContainingSpecIndex(self, index):
        for particle in self.particles:
            if index in particle.getMeasurementIndices():
                return particle.index
    
    def getNumberOfParticles(self):
        return len(self.particles)
    
    def getNumberOfMeasurements(self):
        return len(self.measurements)
    
    def getParticleContours(self):
        contours = [part.contour for part in self.particles]
        return contours
    
    def getParticleContoursByIndex(self, partIndices):
        contours = []
        for index in partIndices:
            particle = self.getParticleOfIndex(index)
            contours.append(particle.contour)
        return contours
    
    def getParticleAssignmentByIndex(self, partIndex):
        particle = self.getParticleOfIndex(partIndex)
        return particle.getParticleAssignment()
    
    def getMeasurementPixelCoords(self):
        coords = []
        for meas in self.measurements:
            coords.append([meas.pixelcoord_x, meas.pixelcoord_y])
        return coords
    
    def getNumberOfParticlesOfAssignment(self, assignment):
        num = 0
        for particle in self.particles:
            if particle.getParticleAssignment() == assignment:
                num += 1
        return num
    
    def getNumberOfSpectraOfParticle(self, particleIndex):
        particle = self.getParticleOfIndex(particleIndex)
        return particle.getNumberOfMeasurements()

    def getSpectraIndicesOfParticle(self, particleIndex):
        particle = self.getParticleOfIndex(particleIndex)
        return particle.getMeasurementIndices()
        
    def getListOfParticleAssignments(self):
        particleAssignments = []
        for particle in self.particles:
            particleAssignments.append(particle.getParticleAssignment())
        return particleAssignments
    
    def getListOfHighestHQIs(self):
        hqis = []
        for particle in self.particles:
            hqis.append(particle.getHighestHQI())
        return hqis
    
    def getHQIOfSpectrumIndex(self, specIndex):
        for particle in self.particles:
            if specIndex in particle.getMeasurementIndices():
                return particle.getHQIOfMeasurementIndex(specIndex)
                    
    def getSizesOfAllParticles(self):
        particleSizes = []
        for particle in self.particles:
            particleSizes.append(particle.getParticleSize())
        return particleSizes
        
    def getShortSizesOfAllParticles(self):
        shortSizes = []
        for particle in self.particles:
            shortSizes.append(particle.getShortParticleSize())
        return shortSizes
    
    def getAreasOfAllParticles(self):
        areas = []
        for particle in self.particles:
            areas.append(particle.getArea())
        return areas
    
    def getSizesOfParticleType(self, assignment):
        particleSizes = []
        for particle in self.particles:
            if particle.getParticleAssignment() == assignment:
                particleSizes.append(particle.getParticleSize())
        return particleSizes
    
    def getIndicesOfParticleType(self, assignment):
        indices = []
        for particle in self.particles:
            if particle.getParticleAssignment() == assignment:
                indices.append(particle.index)
        return indices
    
    def getSizeOfParticleByIndex(self, index):
        particle = self.getParticleOfIndex(index)
        return particle.getParticleSize()
    
    def getUniquePolymers(self):
        typeHist = self.getTypeHistogram()
        return typeHist.keys()

    def getTypeHistogram(self):
        uniquePolymers = np.unique(self.getListOfParticleAssignments())
        typehistogram = {i: 0 for i in uniquePolymers}
        for assignment in self.getListOfParticleAssignments():
            typehistogram[assignment] += 1
        ##sort typehistogram, it will be converted into a list!!
        sorted_typehistogram = sorted(typehistogram.items(), key = operator.itemgetter(1), reverse = True)
        #convert back to dsetParticlecontoursict
        final_typehistogram = {i[0]: i[1] for i in sorted_typehistogram}
        return final_typehistogram
    
    def addMergedParticle(self, particleIndices, newContour, newStats, newAssignment=None):
        newParticle = Particle()
        #copy Measurements
        for index in particleIndices:
            particle = self.getParticleOfIndex(index)
            for meas in particle.getMeasurements():
                if newAssignment is not None:
                    meas.setAssignment(newAssignment)
                    meas.setHQI(100)
                newParticle.addMeasurement(meas)
        
        #set Particle Stats
        long, short, longellipse, shortellipse, area = newStats
        newParticle.longSize_box = long
        newParticle.shortSize_box = short
        newParticle.longSize_ellipse = longellipse
        newParticle.shortSize_ellipse = shortellipse
        newParticle.area = area
        newParticle.contour = newContour
        
        self.particles.append(newParticle)
        print('added new particle')
        
    def removeParticle(self, index):
        particle = self.getParticleOfIndex(index)   #just for asserting to have the correct particle!
        del self.particles[index]
            
    def resetParticleIndices(self):
        for newIndex, particle in enumerate(self.particles):
            particle.index = newIndex