Refactor: applied named constants (MSE, SSIM, FLOW thresholds) in constructor init

Author: r83575

src/deepstream/probes/frame_comparison/gpu/frame_change_detector.cpp

@@ -13,7 +13,7 @@ const double OPTICAL_FLOW_ACTIVE_THRESH = 0.5;
 std::unique_ptr<GPUFrameChangeDetector> GPUFrameChangeDetector::instance = nullptr;
 
 GPUFrameChangeDetector::GPUFrameChangeDetector()
-    : mse_thresh(500.0), ssim_thresh(0.99), flow_thresh(2.0), initialized(true) {}
+    : mse_thresh(MSE_THRESH), ssim_thresh(SSIM_THRESH), flow_thresh(FLOW_THRESH), initialized(true) {}
 
 GPUFrameChangeDetector* GPUFrameChangeDetector::getInstance() {
     if (!instance) {
@@ -121,7 +121,7 @@ GPUFrameChangeDetector::should_process_gpu_direct(const cv::cuda::GpuMat& gpu_fr
     double ssim_val = simple_ssim_gpu(prev_frame_gpu, processed_curr);
     double flow_val = optical_flow_gpu(prev_frame_gpu, processed_curr);
 
-    bool is_static = (mse_val < MSE_THRESH && ssim_val > SSIM_THRESH && flow_val < FLOW_THRESH);
+    bool is_static = (mse_val < mse_thresh && ssim_val > ssim_thresh && flow_val < flow_thresh);
 
     prev_frame_gpu = processed_curr;