From 0290ecb192df6759f45c90dd6b5d2c2e78352a69 Mon Sep 17 00:00:00 2001
From: Jan Grewe <jan.grewe@g-node.org>
Date: Thu, 19 Nov 2020 09:02:15 +0100
Subject: [PATCH] [exposure] enable to set the exposure time
---
grabber.cpp | 1 +
grabber.h | 8 ++++++++
pylonrecorder.cpp | 16 ++++++++++++++--
pylonrecorder.h | 4 ++--
pylonwrapper.cpp | 23 +++++++++++++++++++++++
pylonwrapper.h | 2 ++
writer.h | 1 +
7 files changed, 51 insertions(+), 4 deletions(-)
diff --git a/grabber.cpp b/grabber.cpp
index cdccdb2..59fa903 100644
--- a/grabber.cpp
+++ b/grabber.cpp
@@ -7,6 +7,7 @@ void Grabber::run() {
int count = 0;
if (camera->isOpen()) {
camera->frameRate(static_cast<uint>(framerate));
+ camera->exposureTime(exposure);
Pylon::CGrabResultPtr frame;
Pylon::CInstantCamera *cam = camera->getCamera();
cam->StartGrabbing();
diff --git a/grabber.h b/grabber.h
index 7365da0..5c7683a 100644
--- a/grabber.h
+++ b/grabber.h
@@ -19,11 +19,16 @@ public:
return framerate;
}
+ double currentExposureTime() {
+ return exposure;
+ }
+
private:
bool stop_request = false;
PylonWrapper *camera;
ImageBuffer *buffer;
int framerate;
+ double exposure;
public slots:
void requestStop() {
@@ -32,6 +37,9 @@ public slots:
void setFrameRate(int newFramerate) {
framerate = newFramerate;
}
+ void setExposureTime(double newExposureTime) {
+ exposure = newExposureTime;
+ }
signals:
void terminated();
};
diff --git a/pylonrecorder.cpp b/pylonrecorder.cpp
index b0e49f9..4810c4a 100644
--- a/pylonrecorder.cpp
+++ b/pylonrecorder.cpp
@@ -385,6 +385,13 @@ void PylonRecorder::createActions() {
buffersizeSpinner->setFixedSize(120, 25);
buffersizeSpinner->setStyleSheet("QSpinBox{font-size: 10px;font-family: Arial;color: rgb(0, 0, 0);background-color: rgb(255,255,255);}");
+ exposureSpinner = new QSpinBox();
+ exposureSpinner->setRange(10, 50000);
+ exposureSpinner->setSingleStep(10);
+ exposureSpinner->setValue(defaultExposureTime);
+ exposureSpinner->setFixedSize(120, 25);
+ exposureSpinner->setStyleSheet("QSpinBox{font-size: 10px;font-family: Arial;color: rgb(0, 0, 0);background-color: rgb(255,255,255);}");
+
dryRunCheckBox = new QCheckBox("Dry run, no writing");
dryRunCheckBox->setChecked(false);
dryRunCheckBox->setFixedSize(150, 25);
@@ -400,9 +407,12 @@ void PylonRecorder::createActions() {
toolbar->addAction(grab_continuous_action);
toolbar->addAction(grab_stop_action);
toolbar->addSeparator();
- toolbar->addWidget(new QLabel("frame rate:"));
+ toolbar->addWidget(new QLabel("frame rate (Hz):"));
toolbar->addWidget(framerateSpinner);
toolbar->addSeparator();
+ toolbar->addWidget(new QLabel("exposure time (us):"));
+ toolbar->addWidget(exposureSpinner);
+ toolbar->addSeparator();
toolbar->addWidget(new QLabel("buffer size:"));
toolbar->addWidget(buffersizeSpinner);
toolbar->addSeparator();
@@ -480,11 +490,11 @@ void PylonRecorder::disconnectCamera() {
void PylonRecorder::startRecording() {
std::string filename = createFilename();
- //std::cerr << filename << std::endl;
fileLabel->setText(QString::fromStdString(filename));
VideoSpecs specs;
specs.fps = framerateSpinner->value();
specs.filename = filename;
+ specs.exposureTime = static_cast<double>(exposureSpinner->value());
ImageSettings settings = pylon->getImageSettings();
specs.width = static_cast<uint32_t>(settings.width);
specs.height= static_cast<uint32_t>(settings.height);
@@ -497,6 +507,8 @@ void PylonRecorder::startRecording() {
}
if (framerateSpinner->value() != grabber->currentFramerate())
grabber->setFrameRate(framerateSpinner->value());
+ if (exposureSpinner->value() != int(grabber->currentExposureTime()))
+ grabber->setExposureTime(static_cast<double>(exposureSpinner->value()));
writer->setVideoSpecs(specs);
buffer->clear();
grabber->start();
diff --git a/pylonrecorder.h b/pylonrecorder.h
index ee1dddd..7bbbf06 100644
--- a/pylonrecorder.h
+++ b/pylonrecorder.h
@@ -76,7 +76,7 @@ private:
void applyScaling();
void adjustScrollBar(QScrollBar *scrollBar, double factor);
- int defaultBufferSize = 1000, defaultFrameRate = 30, movieCount = 0;
+ int defaultBufferSize = 1000, defaultFrameRate = 30, movieCount = 0, defaultExposureTime = 3000;
QImage image;
QTimer *frameTimer, *preassureTimer, *labelTimer;
QLabel *imageLabel, *writingLabel, *grabbingLabel, *cameraConnectedLabel, *fileLabel;
@@ -94,7 +94,7 @@ private:
QString activeLabelStyleHigh = "QLabel { font-size: 10px;font-family: Arial; color : red; }";
QString activeLabelStyleLow = "QLabel { font-size: 10px;font-family: Arial; color : cmyk(0, 255, 255, 0, 50); }";
QString inactiveLabelStyle = ("QLabel { font-size: 10px;font-family: Arial; color :gray; }");
- QSpinBox *framerateSpinner, *buffersizeSpinner;
+ QSpinBox *framerateSpinner, *buffersizeSpinner, *exposureSpinner;
#if defined(QT_PRINTSUPPORT_LIB) && QT_CONFIG(printer)
diff --git a/pylonwrapper.cpp b/pylonwrapper.cpp
index d9c80e4..f9b8913 100644
--- a/pylonwrapper.cpp
+++ b/pylonwrapper.cpp
@@ -59,6 +59,29 @@ double PylonWrapper::frameRate() {
return rate;
}
+double PylonWrapper::exposureTime() {
+ double time = -1.;
+ if (valid) {
+ GenApi::INodeMap& nodemap = camera->GetNodeMap();
+ GenApi::INode* n = nodemap.GetNode( "ExposureTime" );
+ Pylon::CFloatParameter exposure_time( n );
+ time = exposure_time.GetValue();
+ }
+ return time;
+}
+
+bool PylonWrapper::exposureTime(double exposure_time) {
+ if (valid) {
+ GenApi::INodeMap& nodemap = camera->GetNodeMap();
+ GenApi::CEnumerationPtr(nodemap.GetNode( "ExposureTimeMode" ))->FromString("Standard");
+ GenApi::INode* n = nodemap.GetNode( "ExposureTime" );
+ Pylon::CFloatParameter exp_time( n );
+ exp_time.SetValue( exposure_time );
+ return true;
+ }
+ return false;
+}
+
ImageSettings PylonWrapper::getImageSettings() {
ImageSettings settings;
if (valid) {
diff --git a/pylonwrapper.h b/pylonwrapper.h
index 66f14d1..f2e5e24 100644
--- a/pylonwrapper.h
+++ b/pylonwrapper.h
@@ -27,6 +27,8 @@ public:
bool frameRate(uint framerate);
double frameRate();
double maxFrameRate();
+ double exposureTime();
+ bool exposureTime(double exposure_time);
Pylon::CInstantCamera *getCamera();
private:
diff --git a/writer.h b/writer.h
index 673b365..4f5c17d 100644
--- a/writer.h
+++ b/writer.h
@@ -11,6 +11,7 @@ struct VideoSpecs {
std::string filename;
uint32_t width, height, quality = 95;
int fps;
+ double exposureTime;
Pylon::EPixelType pixelType;
Pylon::EImageOrientation orientation;
};