Added a note about max_disp

components/rgbd-sources/src/algorithms/fixstars_sgm.cpp

@@ -12,6 +12,8 @@ using cv::Mat;
 FixstarsSGM::FixstarsSGM(nlohmann::json &config) : Disparity(config) {
 	ssgm_ = nullptr;
 	use_filter_ = config.value("use_filter", false);
+	// note: (max_disp_ << 4) libsgm subpixel accuracy.
+	//       What is the impact in the filter? (possible artifacts)
 	filter_ = cv::cuda::createDisparityBilateralFilter(max_disp_ << 4, config.value("filter_radius", 25), config.value("filter_iter", 1));
 }