diff --git a/include/LambdaCamera.h b/include/LambdaCamera.h
index 95053ba..8b5e314 100755
--- a/include/LambdaCamera.h
+++ b/include/LambdaCamera.h
@@ -90,6 +90,12 @@ class LIBLAMBDA_API Camera
 	void getChargeSumming(bool &is_charge_summing);
 	void setChargeSumming(int is_charge_summing);
 
+	// Frame summing
+	void checkDependency(double exposure_i);
+
+	void setExposureAccuTime(double exposure_i);
+	void setAccumulationMode(bool accumulationMode);
+
 private:
 	class CameraThread: public CmdThread
 	{
@@ -142,7 +148,10 @@ class LIBLAMBDA_API Camera
 	/* main acquisition thread*/
 	CameraThread 	m_thread;
 	int 		m_acq_frame_nb;
-	
+
+	// Frame summing
+	double m_exposure_i;
+	bool is_frame_summing;
 };
 }
 }
diff --git a/src/LambdaCamera.cpp b/src/LambdaCamera.cpp
index dd82ea5..4504f78 100755
--- a/src/LambdaCamera.cpp
+++ b/src/LambdaCamera.cpp
@@ -134,11 +134,19 @@ void Camera::CameraThread::execStartAcq()
         
                 void *ptr = buffer_mgr.getFrameBufferPtr(acq_frame_nb);
 
-                if(m_nDataType == 1) // short (12 bits)
-                    memcpy((short*)ptr, frame->data(), frame->size()); //we need a nb of BYTES .
-                else if(m_nDataType == 2) // int (24 bits)
-                    memcpy((int*)ptr, frame->data(), frame->size()); //we need a nb of BYTES .
-                
+                if (m_cam->receiver->summedFrames() > 1)
+                {
+                    // En mode accumulation image en 32 bits 
+                    memcpy((int32_t*)ptr, frame->data(), frame->size());
+                }
+                else
+                {
+
+                    if(m_nDataType == 1) // short (12 bits)
+                        memcpy((short*)ptr, frame->data(), frame->size()); //we need a nb of BYTES .
+                    else if(m_nDataType == 2) // int (24 bits)
+                        memcpy((int*)ptr, frame->data(), frame->size()); //we need a nb of BYTES .
+                }
                 m_cam->receiver->release(frame);
             }
 
@@ -228,6 +236,18 @@ Camera::Camera(std::string& config_file):
     }
     
     m_size = Size(receiver->frameWidth(),receiver->frameHeight());
+
+    int N = receiver->summedFrames();
+    if (N > 1)
+    {
+        m_exposure_i = m_exposure / (double)N;
+        is_frame_summing = true;
+    }
+    else
+    {
+        is_frame_summing = false;
+        m_exposure_i = m_exposure;
+    }
     
     m_thread.start();
 }
@@ -740,4 +760,87 @@ void Camera::setChargeSumming(int is_charge_summing)
     {
         detector->setChargeSumming(xsp::lambda::ChargeSumming::OFF);
     }
-}
\ No newline at end of file
+}
+
+//---------------------------------------------------------------------------------------
+//! ICATHALES-582 - Frame summing by accumulation
+//! Camera Frame summing setting params
+//! globalExposure = exposure_i * N
+//---------------------------------------------------------------------------------------
+void Camera::checkDependency(double exposure_i)
+{
+    // Check image bits
+    xsp::lambda::OperationMode om = detector->operationMode();
+    if (exposure_i > 1)
+    {
+        if (om.bit_depth != xsp::lambda::BitDepth::DEPTH_24)
+            throw LIMA_HW_EXC(InvalidValue, "Exposure by frame is not conform with operation mode : 24 bits image required !");
+        //detector->setOperationMode(OperationMode(xsp::lambda::BitDepth::DEPTH_24));
+        //detector->setBitDepth(xsp::lambda::BitDepth::DEPTH_24);
+    }
+    else if (exposure_i >= 0.5)
+    {
+        if (om.bit_depth != xsp::lambda::BitDepth::DEPTH_12)
+            throw LIMA_HW_EXC(InvalidValue, "Exposure by frame is not conform with operation mode : 12 bits image required !");
+        //detector->setOperationMode(OperationMode(xsp::lambda::BitDepth::DEPTH_12));
+        //detector->setBitDepth(xsp::lambda::BitDepth::DEPTH_12);
+    }
+    else if (exposure_i >= 0.25)
+    {
+        if (om.bit_depth != xsp::lambda::BitDepth::DEPTH_6)
+            throw LIMA_HW_EXC(InvalidValue, "Exposure by frame is not conform with operation mode : 6 bits image required !");
+        //detector->setOperationMode(OperationMode(xsp::lambda::BitDepth::DEPTH_6));
+        //detector->setBitDepth(xsp::lambda::BitDepth::DEPTH_6);
+    }
+    else if (exposure_i > 0.0) {
+        if (om.bit_depth != xsp::lambda::BitDepth::DEPTH_1)
+            throw LIMA_HW_EXC(InvalidValue, "Exposure by frame is not conform with operation mode : 1 bit image required !");
+        //detector->setOperationMode(OperationMode(xsp::lambda::BitDepth::DEPTH_1));
+        //detector->setBitDepth(xsp::lambda::BitDepth::DEPTH_1);
+    }
+    else 
+        throw LIMA_HW_EXC(InvalidValue, "Exposure by frame should be positive and not null !");
+}
+
+void Camera::setExposureAccuTime(double exposureAccuTime)
+{
+    DEB_MEMBER_FUNCT();
+    DEB_TRACE() << "Camera::setExposureAccuTime - " << DEB_VAR1(exposureAccuTime);
+
+    double exposureByFrame = exposureAccuTime / 1E3;
+    if (exposureByFrame <= 0.0 || exposureByFrame > m_exposure)
+        LIMA_HW_EXC(InvalidValue, "Exposure by frame should be positive, greather than zero, in milliseconds and less than global exposure.");
+
+    m_exposure_i = exposureByFrame;
+
+    if (receiver->summedFrames() > 1)
+    {
+        // Update Nb frames to sum by image
+        int N = m_exposure / m_exposure_i;
+        receiver->setSummedFrames(N);
+
+        is_frame_summing = N > 1;
+    }
+}
+
+void Camera::setAccumulationMode(bool accumulationMode)
+{
+    DEB_MEMBER_FUNCT();
+    DEB_TRACE() << "Camera::setAccumulationMode - " << DEB_VAR1(accumulationMode);
+
+    // Le hardware se met en mode summing automatiquement quand N > 1
+    if (accumulationMode)
+    {
+        if (m_exposure_i == 0.0)
+            LIMA_HW_EXC(InvalidValue, "Impossible to determine N. Fix before exposureAccuTime");            
+    
+        // Activation summing
+        int N = m_exposure / m_exposure_i;
+        receiver->setSummedFrames(N);
+    }
+    else {
+        // Desactivation summing
+        receiver->setSummedFrames(1);
+    }
+    is_frame_summing = accumulationMode;
+}