Class to recognize straight line tracks, based on optimized Hough trasform. More...

Inheritance diagram for TotemRPUVPatternFinder:

Classes
struct	RPSettings
	block of (exceptional) settings for 1 RP More...

Public Member Functions
void	produce (edm::Event &e, const edm::EventSetup &c) override

	TotemRPUVPatternFinder (const edm::ParameterSet &conf)

	~TotemRPUVPatternFinder () override

Public Member Functions inherited from edm::stream::EDProducer<>
	EDProducer ()=default

	EDProducer (const EDProducer &)=delete

bool	hasAbilityToProduceInBeginLumis () const final

bool	hasAbilityToProduceInBeginProcessBlocks () const final

bool	hasAbilityToProduceInBeginRuns () const final

bool	hasAbilityToProduceInEndLumis () const final

bool	hasAbilityToProduceInEndProcessBlocks () const final

bool	hasAbilityToProduceInEndRuns () const final

const EDProducer &	operator= (const EDProducer &)=delete

Static Public Member Functions
static void	fillDescriptions (edm::ConfigurationDescriptions &)

Private Member Functions
void	recognizeAndSelect (TotemRPUVPattern::ProjectionType proj, double z0, double threshold, unsigned int planes_required, const edm::DetSetVector< TotemRPRecHit > &hits, edm::DetSet< TotemRPUVPattern > &patterns)
	executes line recognition in a projection More...

Private Attributes
edm::ESGetToken< CTPPSGeometry, VeryForwardRealGeometryRecord >	ctppsGeometryToken

edm::EDGetTokenT < edm::DetSetVector < TotemRPRecHit > >	detSetVectorTotemRPRecHitToken

std::map< unsigned int, RPSettings >	exceptionalSettings
	exceptional settings: RP Id –> settings More...

edm::ESWatcher < VeryForwardRealGeometryRecord >	geometryWatcher

FastLineRecognition *	lrcgn
	the line recognition algorithm More...

double	max_a_toFit
	maximal angle (in any projection) to mark candidate as fittable - controls track parallelity More...

unsigned int	maxHitsPerPlaneToSearch
	above this limit, planes are considered noisy More...

unsigned char	minPlanesPerProjectionToFit
	minimal required number of active planes per projection to mark track candidate as fittable More...

unsigned char	minPlanesPerProjectionToSearch
	minimal required number of active planes per projection to even start track recognition More...

edm::InputTag	tagRecHit

double	threshold
	minimal weight of (Hough) cluster to accept it as candidate More...

unsigned int	verbosity

Additional Inherited Members
Public Types inherited from edm::stream::EDProducer<>
using	CacheTypes = CacheContexts< T...>

using	GlobalCache = typename CacheTypes::GlobalCache

using	HasAbility = AbilityChecker< T...>

using	InputProcessBlockCache = typename CacheTypes::InputProcessBlockCache

using	LuminosityBlockCache = typename CacheTypes::LuminosityBlockCache

using	LuminosityBlockContext = LuminosityBlockContextT< LuminosityBlockCache, RunCache, GlobalCache >

using	LuminosityBlockSummaryCache = typename CacheTypes::LuminosityBlockSummaryCache

using	RunCache = typename CacheTypes::RunCache

using	RunContext = RunContextT< RunCache, GlobalCache >

using	RunSummaryCache = typename CacheTypes::RunSummaryCache

Detailed Description

Class to recognize straight line tracks, based on optimized Hough trasform.

The search is perfomed in global U,V coordinates (wrt. beam). In this way (some of) the alignment corrections can be taken into account.

Definition at line 37 of file TotemRPUVPatternFinder.cc.

Constructor & Destructor Documentation

TotemRPUVPatternFinder::TotemRPUVPatternFinder ( const edm::ParameterSet & conf )

Definition at line 98 of file TotemRPUVPatternFinder.cc.

References detSetVectorTotemRPRecHitToken, exceptionalSettings, edm::ParameterSet::getParameter(), TotemRPUVPatternFinder::RPSettings::minPlanesPerProjectionToFit_U, and tagRecHit.

     : tagRecHit(conf.getParameter<edm::InputTag>("tagRecHit")),
       ctppsGeometryToken(esConsumes()),
       verbosity(conf.getUntrackedParameter<unsigned int>("verbosity", 0)),
       minPlanesPerProjectionToSearch(conf.getParameter<unsigned int>("minPlanesPerProjectionToSearch")),
       minPlanesPerProjectionToFit(conf.getParameter<unsigned int>("minPlanesPerProjectionToFit")),
       maxHitsPerPlaneToSearch(conf.getParameter<unsigned int>("maxHitsPerPlaneToSearch")),
       lrcgn(new FastLineRecognition(conf.getParameter<double>("clusterSize_a"),
                                     conf.getParameter<double>("clusterSize_b"))),
       threshold(conf.getParameter<double>("threshold")),
       max_a_toFit(conf.getParameter<double>("max_a_toFit")) {
   for (const auto &ps : conf.getParameter<vector<ParameterSet>>("exceptionalSettings")) {
     unsigned int rpId = ps.getParameter<unsigned int>("rpId");
 
     RPSettings settings;
     settings.minPlanesPerProjectionToFit_U = ps.getParameter<unsigned int>("minPlanesPerProjectionToFit_U");
     settings.minPlanesPerProjectionToFit_V = ps.getParameter<unsigned int>("minPlanesPerProjectionToFit_V");
     settings.threshold_U = ps.getParameter<double>("threshold_U");
     settings.threshold_V = ps.getParameter<double>("threshold_V");
 
     exceptionalSettings[rpId] = settings;
   }
 
   detSetVectorTotemRPRecHitToken = consumes<edm::DetSetVector<TotemRPRecHit>>(tagRecHit);
 
   produces<DetSetVector<TotemRPUVPattern>>();
 }

TotemRPUVPatternFinder::~TotemRPUVPatternFinder ( )

override

Definition at line 128 of file TotemRPUVPatternFinder.cc.

References lrcgn.

128 { delete lrcgn; }

TotemRPUVPatternFinder::lrcgn

FastLineRecognition * lrcgn

the line recognition algorithm

Definition: TotemRPUVPatternFinder.cc:65

Member Function Documentation

void TotemRPUVPatternFinder::fillDescriptions ( edm::ConfigurationDescriptions & descr )

static

Definition at line 285 of file TotemRPUVPatternFinder.cc.

References edm::ConfigurationDescriptions::add(), edm::ParameterSetDescription::add(), edm::ParameterSetDescription::addUntracked(), edm::ParameterSetDescription::addVPSet(), submitPVResolutionJobs::desc, HLT_FULL_cff::InputTag, and edm::ParameterDescriptionNode::setComment().

                                                                                  {
   edm::ParameterSetDescription desc;
 
   desc.add<edm::InputTag>("tagRecHit", edm::InputTag("totemRPRecHitProducer"))
       ->setComment("input rechits collection to retrieve");
   desc.addUntracked<unsigned int>("verbosity", 0);
   desc.add<unsigned int>("maxHitsPerPlaneToSearch", 5)
       ->setComment("minimum threshold of hits multiplicity to flag the pattern as dirty");
   desc.add<unsigned int>("minPlanesPerProjectionToSearch", 3)
       ->setComment(
           "minimal number of reasonable (= not empty and not dirty) planes per projection and per RP, to start the "
           "pattern search");
   desc.add<double>("clusterSize_a", 0.02 /* rad */)
       ->setComment("(full) cluster size (in rad) in slope-intercept space");
   desc.add<double>("clusterSize_b", 0.3 /* mm */);
 
   desc.add<double>("threshold", 2.99)
       ->setComment(
           "minimal weight of (Hough) cluster to accept it as candidate\n"
           "  weight of cluster = sum of weights of contributing points\n"
           "  weight of point = sigma0 / sigma_of_point\n"
           "most often: weight of point ~ 1, thus cluster weight is roughly number of contributing points");
 
   desc.add<unsigned int>("minPlanesPerProjectionToFit", 3)
       ->setComment(
           "minimal number of planes (in the recognised patterns) per projection and per RP, to tag the candidate as "
           "fittable");
 
   desc.add<bool>("allowAmbiguousCombination", false)
       ->setComment(
           "whether to allow combination of most significant U and V pattern, in case there several of them.\n"
           "don't set it to True, unless you have reason");
 
   desc.add<double>("max_a_toFit", 10.0)
       ->setComment(
           "maximal angle (in any projection) to mark the candidate as fittable -> controls track parallelity with "
           "beam\n"
           "huge value -> no constraint");
 
   edm::ParameterSetDescription exceptions_validator;
   exceptions_validator.add<unsigned int>("rpId")->setComment("RP id according to CTPPSDetId");
   exceptions_validator.add<unsigned int>("minPlanesPerProjectionToFit_U");
   exceptions_validator.add<unsigned int>("minPlanesPerProjectionToFit_V");
   exceptions_validator.add<double>("threshold_U");
   exceptions_validator.add<double>("threshold_V");
 
   std::vector<edm::ParameterSet> exceptions_default;
   desc.addVPSet("exceptionalSettings", exceptions_validator, exceptions_default);
 
   descr.add("totemRPUVPatternFinder", desc);
 }

void TotemRPUVPatternFinder::produce	(	edm::Event &	e,
		const edm::EventSetup &	c
	)

override

Definition at line 164 of file TotemRPUVPatternFinder.cc.

References edm::ESWatcher< T >::check(), ctppsGeometryToken, data, detSetVectorTotemRPRecHitToken, exceptionalSettings, edm::DetSetVector< T >::find_or_insert(), relativeConstraints::geometry, geometryWatcher, edm::EventSetup::getData(), h, input, lrcgn, maxHitsPerPlaneToSearch, minPlanesPerProjectionToFit, minPlanesPerProjectionToSearch, AlCaHLTBitMon_ParallelJobs::p, TotemRPDetId::plane(), TotemRPUVPattern::projU, TotemRPUVPattern::projV, recognizeAndSelect(), FastLineRecognition::resetGeometry(), CTPPSDetId::rpId(), threshold, and verbosity.

                                                                              {
   if (verbosity > 5)
     LogVerbatim("TotemRPUVPatternFinder")
         << ">> TotemRPUVPatternFinder::produce " << event.id().run() << ":" << event.id().event();
 
   // geometry
   const auto &geometry = es.getData(ctppsGeometryToken);
   if (geometryWatcher.check(es))
     lrcgn->resetGeometry(&geometry);
 
   // get input
   edm::Handle<edm::DetSetVector<TotemRPRecHit>> input;
   event.getByToken(detSetVectorTotemRPRecHitToken, input);
 
   // prepare output
   DetSetVector<TotemRPUVPattern> patternsVector;
 
   // split input per RP and per U/V projection
   struct RPData {
     DetSetVector<TotemRPRecHit> hits_U, hits_V;
     map<uint8_t, uint16_t> planeOccupancy_U, planeOccupancy_V;
   };
   map<unsigned int, RPData> rpData;
 
   for (auto &ids : *input) {
     TotemRPDetId detId(ids.detId());
     unsigned int plane = detId.plane();
     bool uDir = detId.isStripsCoordinateUDirection();
 
     CTPPSDetId rpId = detId.rpId();
 
     RPData &data = rpData[rpId];
 
     for (auto &h : ids) {
       if (uDir) {
         auto &ods = data.hits_U.find_or_insert(ids.detId());
         ods.push_back(h);
         data.planeOccupancy_U[plane]++;
       } else {
         auto &ods = data.hits_V.find_or_insert(ids.detId());
         ods.push_back(h);
         data.planeOccupancy_V[plane]++;
       }
     }
   }
 
   // track recognition pot by pot
   for (auto const &it : rpData) {
     CTPPSDetId rpId(it.first);
     RPData const &data = it.second;
 
     // merge default and exceptional settings (if available)
     unsigned int minPlanesPerProjectionToFit_U = minPlanesPerProjectionToFit;
     unsigned int minPlanesPerProjectionToFit_V = minPlanesPerProjectionToFit;
     double threshold_U = threshold;
     double threshold_V = threshold;
 
     auto setIt = exceptionalSettings.find(rpId);
     if (setIt != exceptionalSettings.end()) {
       minPlanesPerProjectionToFit_U = setIt->second.minPlanesPerProjectionToFit_U;
       minPlanesPerProjectionToFit_V = setIt->second.minPlanesPerProjectionToFit_V;
       threshold_U = setIt->second.threshold_U;
       threshold_V = setIt->second.threshold_V;
     }
 
     auto &uColl = data.planeOccupancy_U;
     auto &vColl = data.planeOccupancy_V;
 
     if (verbosity > 5) {
       LogVerbatim("TotemRPUVPatternFinder")
           << "\tRP " << rpId << "\n\t\tall planes: u = " << uColl.size() << ", v = " << vColl.size();
     }
 
     // count planes with clean data (no showers, noise, ...)
     unsigned int uPlanes = 0, vPlanes = 0;
     for (auto pit : uColl)
       if (pit.second <= maxHitsPerPlaneToSearch)
         uPlanes++;
 
     for (auto pit : vColl)
       if (pit.second <= maxHitsPerPlaneToSearch)
         vPlanes++;
 
     if (verbosity > 5)
       LogVerbatim("TotemRPUVPatternFinder") << "\t\tplanes with clean data: u = " << uPlanes << ", v = " << vPlanes;
 
     // discard RPs with too few reasonable planes
     if (uPlanes < minPlanesPerProjectionToSearch || vPlanes < minPlanesPerProjectionToSearch)
       continue;
 
     // prepare data containers
     DetSet<TotemRPUVPattern> &patterns = patternsVector.find_or_insert(rpId);
 
     // "typical" z0 for the RP
     double z0 = geometry.rp(rpId)->translation().z();
 
     // u then v recognition
     recognizeAndSelect(TotemRPUVPattern::projU, z0, threshold_U, minPlanesPerProjectionToFit_U, data.hits_U, patterns);
 
     recognizeAndSelect(TotemRPUVPattern::projV, z0, threshold_V, minPlanesPerProjectionToFit_V, data.hits_V, patterns);
 
     if (verbosity > 5) {
       LogVerbatim("TotemRPUVPatternFinder") << "\t\tpatterns:";
       for (const auto &p : patterns) {
         unsigned int n_hits = 0;
         for (auto &hds : p.hits())
           n_hits += hds.size();
 
         LogVerbatim("TotemRPUVPatternFinder")
             << "\t\t\tproj = " << ((p.projection() == TotemRPUVPattern::projU) ? "U" : "V") << ", a = " << p.a()
             << ", b = " << p.b() << ", w = " << p.w() << ", fittable = " << p.fittable() << ", hits = " << n_hits;
       }
     }
   }
 
   // save output
   event.put(make_unique<DetSetVector<TotemRPUVPattern>>(patternsVector));
 }

void TotemRPUVPatternFinder::recognizeAndSelect	(	TotemRPUVPattern::ProjectionType	proj,
		double	z0,
		double	threshold,
		unsigned int	planes_required,
		const edm::DetSetVector< TotemRPRecHit > &	hits,
		edm::DetSet< TotemRPUVPattern > &	patterns
	)

private

executes line recognition in a projection

Definition at line 132 of file TotemRPUVPatternFinder.cc.

References FastLineRecognition::getPatterns(), lrcgn, max_a_toFit, AlCaHLTBitMon_ParallelJobs::p, and edm::DetSet< T >::push_back().

Referenced by produce().

                                                                                     {
   // run recognition
   DetSet<TotemRPUVPattern> newPatterns;
   lrcgn->getPatterns(hits, z0, threshold_loc, newPatterns);
 
   // set pattern properties and copy to the global pattern collection
   for (auto &p : newPatterns) {
     p.setProjection(proj);
 
     p.setFittable(true);
 
     set<unsigned int> planes;
     for (const auto &ds : p.hits())
       planes.insert(TotemRPDetId(ds.detId()).plane());
 
     if (planes.size() < planes_required)
       p.setFittable(false);
 
     if (fabs(p.a()) > max_a_toFit)
       p.setFittable(false);
 
     patterns.push_back(p);
   }
 }

Member Data Documentation

edm::ESGetToken<CTPPSGeometry, VeryForwardRealGeometryRecord> TotemRPUVPatternFinder::ctppsGeometryToken

private

Definition at line 50 of file TotemRPUVPatternFinder.cc.

Referenced by produce().

edm::EDGetTokenT<edm::DetSetVector<TotemRPRecHit> > TotemRPUVPatternFinder::detSetVectorTotemRPRecHitToken

private

Definition at line 48 of file TotemRPUVPatternFinder.cc.

Referenced by produce(), and TotemRPUVPatternFinder().

std::map<unsigned int, RPSettings> TotemRPUVPatternFinder::exceptionalSettings

private

exceptional settings: RP Id –> settings

Definition at line 80 of file TotemRPUVPatternFinder.cc.

Referenced by produce(), and TotemRPUVPatternFinder().

edm::ESWatcher<VeryForwardRealGeometryRecord> TotemRPUVPatternFinder::geometryWatcher

private

Definition at line 51 of file TotemRPUVPatternFinder.cc.

Referenced by produce().

FastLineRecognition* TotemRPUVPatternFinder::lrcgn

private

the line recognition algorithm

Definition at line 65 of file TotemRPUVPatternFinder.cc.

Referenced by produce(), recognizeAndSelect(), and ~TotemRPUVPatternFinder().

double TotemRPUVPatternFinder::max_a_toFit

private

maximal angle (in any projection) to mark candidate as fittable - controls track parallelity

Definition at line 71 of file TotemRPUVPatternFinder.cc.

Referenced by recognizeAndSelect().

unsigned int TotemRPUVPatternFinder::maxHitsPerPlaneToSearch

private

above this limit, planes are considered noisy

Definition at line 62 of file TotemRPUVPatternFinder.cc.

Referenced by produce().

unsigned char TotemRPUVPatternFinder::minPlanesPerProjectionToFit

private

minimal required number of active planes per projection to mark track candidate as fittable

Definition at line 59 of file TotemRPUVPatternFinder.cc.

Referenced by produce().

unsigned char TotemRPUVPatternFinder::minPlanesPerProjectionToSearch

private

minimal required number of active planes per projection to even start track recognition

Definition at line 56 of file TotemRPUVPatternFinder.cc.

Referenced by produce().

edm::InputTag TotemRPUVPatternFinder::tagRecHit

private

Definition at line 47 of file TotemRPUVPatternFinder.cc.

Referenced by TotemRPUVPatternFinder().

double TotemRPUVPatternFinder::threshold

private

minimal weight of (Hough) cluster to accept it as candidate

Definition at line 68 of file TotemRPUVPatternFinder.cc.

Referenced by utils.StatisticalTest::get_status(), and produce().

unsigned int TotemRPUVPatternFinder::verbosity

private

Definition at line 53 of file TotemRPUVPatternFinder.cc.

Referenced by produce().

Classes

Public Member Functions

Static Public Member Functions

Private Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation