diff --git a/HPPA/HPPA.cpp b/HPPA/HPPA.cpp
index a15a30a..27df1cf 100644
--- a/HPPA/HPPA.cpp
+++ b/HPPA/HPPA.cpp
@@ -271,6 +271,10 @@ sizePolicy1.setHeightForWidth(graphicsView_delete->sizePolicy().hasHeightForWidt
 
     gridLayout_toc->addWidget(m_layerTreeView, 0, 0, 1, 1);
 
+    // Connect TOC selection change to populate ImageControl
+    connect(m_layerTreeView->selectionModel(), SIGNAL(selectionChanged(QItemSelection,QItemSelection)),
+        this, SLOT(onLayerTreeSelectionChanged(QItemSelection,QItemSelection)));
+
     dock_layers->setWidget(dock_layersWidgetContents);
     dock_layersWidgetContents->setStyleSheet(qss_DockWidget_contentWidget);
 
@@ -479,6 +483,10 @@ sizePolicy1.setHeightForWidth(graphicsView_delete->sizePolicy().hasHeightForWidt
 	initControlTabwidget();
 	m_tabManager = new TabManager(ui.controlTabWidget, this);
 
+	// Connect ImageControl band change to re-render (m_ic created in initControlTabwidget)
+	connect(m_ic, SIGNAL(bandSelectionChanged(double,double,double)),
+		this, SLOT(onBandSelectionChanged(double,double,double)));
+
 	//3D模型看板
 	ui.mDockWidgetSimulator->setTile(QString::fromLocal8Bit("3D模型"));
 	//ui.mDockWidgetSimulator->show();
@@ -748,6 +756,11 @@ void HPPA::initControlTabwidget()
 	connect(m_tmc, SIGNAL(sequenceComplete()), this, SLOT(onsequenceComplete()));
 	m_tmc->setWindowFlags(Qt::Widget);
 	ui.controlTabWidget->addTab(m_tmc, QString::fromLocal8Bit("2轴控制"));
+
+
+	// Connect ImageControl band change to re-render (m_ic created in initControlTabwidget)
+	connect(m_ic, SIGNAL(bandSelectionChanged(double,double,double)),
+		this, SLOT(onBandSelectionChanged(double,double,double)));
 }
 
 void HPPA::recordFromRobotArm(int fileCounter)
@@ -839,7 +852,7 @@ void HPPA::createMoveplatformActionGroup()
 	}
 	else if (lastSelectedAction == "mAction_RobotArm")
 	{
-		ui.mAction_RobotArm->setChecked(true);
+	 ui.mAction_RobotArm->setChecked(true);
 	}
 	else if (lastSelectedAction == "mAction_1AxisMotor")
 	{
@@ -1014,8 +1027,8 @@ void HPPA::createScenarioActionGroup()
 	}
 	else if (lastSelectedAction == "mActionPlantPhenotypeScenario")
 	{
-		ui.mActionPlantPhenotypeScenario->setChecked(true);
-		ui.mActionPlantPhenotypeScenario->trigger();
+	 ui.mActionPlantPhenotypeScenario->setChecked(true);
+	 ui.mActionPlantPhenotypeScenario->trigger();
 	}
 }
 
@@ -1771,7 +1784,7 @@ void HPPA::onReference()
 {
 	QMessageBox msgBox;
 	msgBox.setText(QString::fromLocal8Bit("请确保白板放置正确！"));
-	msgBox.exec();
+ msgBox.exec();
 
 	QAction* checked = moveplatformActionGroup->checkedAction();
 	QString checkedName = checked->objectName();
@@ -2000,3 +2013,69 @@ void HPPA::onLayerCreatedFromFile(const QString& baseName, const QString& filePa
 
     qDebug() << "LayerFileCreated -> created layer:" << baseName << "path:" << filePath << "index:" << fileIndex;
 }
+
+void HPPA::onLayerTreeSelectionChanged(const QItemSelection& selected, const QItemSelection& deselected)
+{
+    Q_UNUSED(deselected);
+
+    if (selected.indexes().isEmpty()) {
+        m_ic->setActiveLayer(nullptr);
+        return;
+    }
+
+    QModelIndex idx = selected.indexes().first();
+    if (!idx.isValid()) {
+        m_ic->setActiveLayer(nullptr);
+        return;
+    }
+
+    LayerTreeNode* node = static_cast<LayerTreeNode*>(idx.internalPointer());
+    if (!node || node->type() != LayerTreeNode::Type::Layer) {
+        m_ic->setActiveLayer(nullptr);
+        return;
+    }
+
+    auto* layerNode = static_cast<LayerTreeLayerNode*>(node);
+    MapLayer* mapLayer = layerNode->mapLayer();
+    if (!mapLayer || mapLayer->layerType() != MapLayer::LayerType::Raster) {
+        m_ic->setActiveLayer(nullptr);
+        return;
+    }
+
+    RasterLayer* rl = static_cast<RasterLayer*>(mapLayer);
+    m_ic->setActiveLayer(rl);
+
+    // Also switch to the corresponding tab in the image viewer
+    if (m_MapLayerStore && m_imageViewerTabWidget) {
+        QWidget* widget = m_MapLayerStore->widgetForLayer(mapLayer);
+        if (widget) {
+            int tabIndex = m_imageViewerTabWidget->indexOf(widget);
+            if (tabIndex >= 0) {
+                m_imageViewerTabWidget->setCurrentIndex(tabIndex);
+            }
+        }
+    }
+}
+
+void HPPA::onBandSelectionChanged(double rWave, double gWave, double bWave)
+{
+    RasterLayer* rl = m_ic->activeLayer();
+    if (!rl) return;
+
+    // Find the Mapcavas widget associated with this layer and re-render
+    if (!m_MapLayerStore) return;
+
+    QWidget* container = m_MapLayerStore->widgetForLayer(rl);
+    if (!container) return;
+
+    QList<Mapcavas*> mapcavas = container->findChildren<Mapcavas*>();
+    if (mapcavas.isEmpty()) return;
+
+    RasterLayer::RenderParams params = rl->currentRenderParams();
+    params.rWave = rWave;
+    params.gWave = gWave;
+    params.bWave = bWave;
+    rl->setCurrentRenderParams(params);
+
+    mapcavas[0]->freshmap(params);
+}
diff --git a/HPPA/HPPA.h b/HPPA/HPPA.h
index 05b8ae2..03f983f 100644
--- a/HPPA/HPPA.h
+++ b/HPPA/HPPA.h
@@ -19,6 +19,7 @@
 #include <QNetworkReply>
 #include <QNetworkAccessManager>
 #include <QVector>
+#include <QItemSelection>
 
 #include "ui_HPPA.h"
 #include "resononImager.h"
@@ -335,6 +336,8 @@ public Q_SLOTS:
 		void removeLayerByTreeIndex();
 		void removeAllLayersInRasterGroup();
 
+		void onLayerTreeSelectionChanged(const QItemSelection& selected, const QItemSelection& deselected);
+		void onBandSelectionChanged(double rWave, double gWave, double bWave);
 signals:
 	void StartFocusSignal();
 	void StartRecordSignal();
diff --git a/HPPA/imageControl.cpp b/HPPA/imageControl.cpp
index ccd101f..4afc784 100644
--- a/HPPA/imageControl.cpp
+++ b/HPPA/imageControl.cpp
@@ -1,12 +1,186 @@
 #include "imageControl.h"
+#include "RasterLayer.h"
 
 ImageControl::ImageControl(QWidget* parent)
 	: QDialog(parent)
 {
 	ui.setupUi(this);
 
+	// Connect spinboxes
+	connect(ui.spinRed, QOverload<double>::of(&QDoubleSpinBox::valueChanged), this, &ImageControl::onSpinRedChanged);
+	connect(ui.spinGreen, QOverload<double>::of(&QDoubleSpinBox::valueChanged), this, &ImageControl::onSpinGreenChanged);
+	connect(ui.spinBlue, QOverload<double>::of(&QDoubleSpinBox::valueChanged), this, &ImageControl::onSpinBlueChanged);
+
+	// Connect sliders
+	connect(ui.sliderRed, &QSlider::valueChanged, this, &ImageControl::onSliderRedChanged);
+	connect(ui.sliderGreen, &QSlider::valueChanged, this, &ImageControl::onSliderGreenChanged);
+	connect(ui.sliderBlue, &QSlider::valueChanged, this, &ImageControl::onSliderBlueChanged);
+
+	// Connect preset buttons
+	connect(ui.btnTrueColor, &QPushButton::clicked, this, &ImageControl::onTrueColorClicked);
+	connect(ui.btnColorInfrared, &QPushButton::clicked, this, &ImageControl::onColorInfraredClicked);
 }
 
 ImageControl::~ImageControl()
 {
+}
+
+void ImageControl::setActiveLayer(RasterLayer* layer)
+{
+	m_activeLayer = layer;
+
+	if (!layer) {
+		setEnabled(false);
+		return;
+	}
+	setEnabled(true);
+
+	// Get wavelength range from the layer
+	double minW = 374.5, maxW = 948.1;
+	if (layer->wavelengthRange(minW, maxW)) {
+		m_minWave = minW;
+		m_maxWave = maxW;
+	}
+
+	blockAllSignals(true);
+
+	// Configure spinbox ranges
+	ui.spinRed->setMinimum(m_minWave);
+	ui.spinRed->setMaximum(m_maxWave);
+	ui.spinGreen->setMinimum(m_minWave);
+	ui.spinGreen->setMaximum(m_maxWave);
+	ui.spinBlue->setMinimum(m_minWave);
+	ui.spinBlue->setMaximum(m_maxWave);
+
+	// Configure slider ranges (integer, multiply by 10 for 0.1 nm resolution)
+	int sliderMin = static_cast<int>(m_minWave * 10.0);
+	int sliderMax = static_cast<int>(m_maxWave * 10.0);
+	ui.sliderRed->setMinimum(sliderMin);
+	ui.sliderRed->setMaximum(sliderMax);
+	ui.sliderGreen->setMinimum(sliderMin);
+	ui.sliderGreen->setMaximum(sliderMax);
+	ui.sliderBlue->setMinimum(sliderMin);
+	ui.sliderBlue->setMaximum(sliderMax);
+
+	// Set current values from layer's render params
+	auto params = layer->currentRenderParams();
+	ui.spinRed->setValue(params.rWave);
+	ui.spinGreen->setValue(params.gWave);
+	ui.spinBlue->setValue(params.bWave);
+
+	ui.sliderRed->setValue(static_cast<int>(params.rWave * 10.0));
+	ui.sliderGreen->setValue(static_cast<int>(params.gWave * 10.0));
+	ui.sliderBlue->setValue(static_cast<int>(params.bWave * 10.0));
+
+	blockAllSignals(false);
+}
+
+RasterLayer* ImageControl::activeLayer() const
+{
+	return m_activeLayer;
+}
+
+void ImageControl::onSpinRedChanged(double val)
+{
+	ui.sliderRed->blockSignals(true);
+	ui.sliderRed->setValue(static_cast<int>(val * 10.0));
+	ui.sliderRed->blockSignals(false);
+	emitBandChange();
+}
+
+void ImageControl::onSpinGreenChanged(double val)
+{
+	ui.sliderGreen->blockSignals(true);
+	ui.sliderGreen->setValue(static_cast<int>(val * 10.0));
+	ui.sliderGreen->blockSignals(false);
+	emitBandChange();
+}
+
+void ImageControl::onSpinBlueChanged(double val)
+{
+	ui.sliderBlue->blockSignals(true);
+	ui.sliderBlue->setValue(static_cast<int>(val * 10.0));
+	ui.sliderBlue->blockSignals(false);
+	emitBandChange();
+}
+
+void ImageControl::onSliderRedChanged(int val)
+{
+	double wv = val / 10.0;
+	ui.spinRed->blockSignals(true);
+	ui.spinRed->setValue(wv);
+	ui.spinRed->blockSignals(false);
+	emitBandChange();
+}
+
+void ImageControl::onSliderGreenChanged(int val)
+{
+	double wv = val / 10.0;
+	ui.spinGreen->blockSignals(true);
+	ui.spinGreen->setValue(wv);
+	ui.spinGreen->blockSignals(false);
+	emitBandChange();
+}
+
+void ImageControl::onSliderBlueChanged(int val)
+{
+	double wv = val / 10.0;
+	ui.spinBlue->blockSignals(true);
+	ui.spinBlue->setValue(wv);
+	ui.spinBlue->blockSignals(false);
+	emitBandChange();
+}
+
+void ImageControl::onTrueColorClicked()
+{
+	blockAllSignals(true);
+	ui.spinRed->setValue(665.0);
+	ui.spinGreen->setValue(560.0);
+	ui.spinBlue->setValue(490.0);
+	ui.sliderRed->setValue(static_cast<int>(665.0 * 10.0));
+	ui.sliderGreen->setValue(static_cast<int>(560.0 * 10.0));
+	ui.sliderBlue->setValue(static_cast<int>(490.0 * 10.0));
+	blockAllSignals(false);
+	emitBandChange();
+}
+
+void ImageControl::onColorInfraredClicked()
+{
+	blockAllSignals(true);
+	ui.spinRed->setValue(800.0);
+	ui.spinGreen->setValue(665.0);
+	ui.spinBlue->setValue(560.0);
+	ui.sliderRed->setValue(static_cast<int>(800.0 * 10.0));
+	ui.sliderGreen->setValue(static_cast<int>(665.0 * 10.0));
+	ui.sliderBlue->setValue(static_cast<int>(560.0 * 10.0));
+	blockAllSignals(false);
+	emitBandChange();
+}
+
+void ImageControl::emitBandChange()
+{
+	double r = ui.spinRed->value();
+	double g = ui.spinGreen->value();
+	double b = ui.spinBlue->value();
+
+	// Update active layer's stored render params
+	if (m_activeLayer) {
+		auto params = m_activeLayer->currentRenderParams();
+		params.rWave = r;
+		params.gWave = g;
+		params.bWave = b;
+		m_activeLayer->setCurrentRenderParams(params);
+	}
+
+	emit bandSelectionChanged(r, g, b);
+}
+
+void ImageControl::blockAllSignals(bool block)
+{
+	ui.spinRed->blockSignals(block);
+	ui.spinGreen->blockSignals(block);
+	ui.spinBlue->blockSignals(block);
+	ui.sliderRed->blockSignals(block);
+	ui.sliderGreen->blockSignals(block);
+	ui.sliderBlue->blockSignals(block);
 }
\ No newline at end of file
diff --git a/HPPA/imageControl.h b/HPPA/imageControl.h
index b36d394..b7d60ba 100644
--- a/HPPA/imageControl.h
+++ b/HPPA/imageControl.h
@@ -7,6 +7,8 @@
 
 #include "ui_imgControl.h"
 
+class RasterLayer;
+
 class ImageControl : public QDialog
 {
 	Q_OBJECT
@@ -15,9 +17,32 @@ public:
 	ImageControl(QWidget* parent = nullptr);
 	~ImageControl();
 
+	// Populate controls from a RasterLayer's wavelength info and current render params
+	void setActiveLayer(RasterLayer* layer);
+	RasterLayer* activeLayer() const;
 
 public Q_SLOTS:
 
+Q_SIGNALS:
+	// Emitted when user changes any of the R/G/B wavelength values
+	void bandSelectionChanged(double rWave, double gWave, double bWave);
+
+private Q_SLOTS:
+	void onSpinRedChanged(double val);
+	void onSpinGreenChanged(double val);
+	void onSpinBlueChanged(double val);
+	void onSliderRedChanged(int val);
+	void onSliderGreenChanged(int val);
+	void onSliderBlueChanged(int val);
+	void onTrueColorClicked();
+	void onColorInfraredClicked();
+
 private:
+	void emitBandChange();
+	void blockAllSignals(bool block);
+
 	Ui::ImageControl ui;
+	RasterLayer* m_activeLayer = nullptr;
+	double m_minWave = 374.5;
+	double m_maxWave = 948.1;
 };