predictivephenomics · sotlampr · Oct 22, 2025 · Oct 22, 2025 · Oct 31, 2025 · Oct 31, 2025
diff --git a/CMake/cvutilInstallTargets.cmake b/CMake/cvutilInstallTargets.cmake
@@ -155,10 +155,17 @@ if (CMAKE_SYSTEM_NAME STREQUAL "Windows")
 
 elseif (CMAKE_SYSTEM_NAME STREQUAL "Linux")
     # Install the RhizoVisionExplorer executable
-    install(TARGETS RhizoVisionExplorer rv
-        CONFIGURATIONS Debug Release
-        RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
-    )
+    if(Qt6_FOUND)
+        install(TARGETS RhizoVisionExplorer rv
+            CONFIGURATIONS Debug Release
+            RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
+        )
+    else()
+        install(TARGETS rv
+            CONFIGURATIONS Debug Release
+            RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
+        )
+    endif()
 
     # Install additional files.
     install(FILES README.md COPYING CONFIGURATIONS Debug Release DESTINATION ${CMAKE_INSTALL_DATAROOTDIR}/RhizoVisionExplorer)

diff --git a/CMakeLists.txt b/CMakeLists.txt
@@ -89,14 +89,22 @@ endif()
 find_package(OpenCV REQUIRED)
 
 # Find Qt6
-find_package(Qt6 REQUIRED COMPONENTS Core Widgets Charts Gui OpenGL)
-qt_standard_project_setup()
+find_package(Qt6 COMPONENTS Core Widgets Charts Gui OpenGL)
+
+if(Qt6_found)
+    qt_standard_project_setup()
+    add_compile_definitions(BUILD_GUI)
+else()
+    message(WARNING "qt6 not found, building without GUI support.")
+endif()
 
 # Find cvutil
 find_package(cvutil REQUIRED)
 
-if (CMAKE_SYSTEM_NAME STREQUAL "Linux")
-    find_package(X11 REQUIRED)
+if(Qt6_FOUND)
+    if (CMAKE_SYSTEM_NAME STREQUAL "Linux")
+        find_package(X11 REQUIRED)
+    endif()
 endif()
 
 get_cmake_property(_variableNames VARIABLES)
@@ -116,7 +124,6 @@ set(CMAKE_AUTOUIC ON)    # Enable automatic UIC
 
 # Define the source files for RoiManager
 set(SOURCES
-    RhizoVisionExplorer/MainUI.cpp
     RhizoVisionExplorer/feature_extraction.cpp
     RhizoVisionExplorer/rootsegmentprop.cpp
     RhizoVisionExplorer/roottopology.cpp
@@ -128,8 +135,6 @@ set(HEADERS
     RhizoVisionExplorer/feature_extraction.h
     RhizoVisionExplorer/feature_config.h
     RhizoVisionExplorer/common_types.h
-    RhizoVisionExplorer/demo.h
-    RhizoVisionExplorer/MainUI.h
     RhizoVisionExplorer/resource.h
     RhizoVisionExplorer/rootsegmentprop.h
     RhizoVisionExplorer/roottopology.h
@@ -140,61 +145,61 @@ if(WIN32)
     list(APPEND SOURCES RhizoVisionExplorer/RhizoVisionExplorer.rc)
 endif()
 
-# Define the target as an executable.
-add_executable(RhizoVisionExplorer WIN32 
-    RhizoVisionExplorer/main.cpp
-    ${SOURCES}
-    ${HEADERS})
-add_executable(rv 
+if(Qt6_found)
+    list(APPEND SOURCES RhizoVisionExplorer/MainUI.cpp)
+    list(APPEND HEADERS RhizoVisionExplorer/demo.h RhizoVisionExplorer/MainUI.h)
+endif()
+
+if(Qt6_found)
+    # Define the target as an executable.
+    add_executable(RhizoVisionExplorer WIN32
+        RhizoVisionExplorer/main.cpp
+        ${SOURCES}
+        ${HEADERS})
+    set_target_properties(RhizoVisionExplorer PROPERTIES DEBUG_POSTFIX ${CMAKE_DEBUG_POSTFIX})
+    # Add the generated resource .cpp file to the target
+    target_sources(RhizoVisionExplorer PRIVATE ${RESOURCES})
+
+    # Include directories (Qt and OpenCV paths are already handled at the solution level)
+    target_include_directories(RhizoVisionExplorer
+        PRIVATE
+            #${CMAKE_BINARY_DIR}/library/include
+            ${OpenCV_INCLUDE_DIRS}
+    )
+    # Link libraries (cvutil depends on PluginManager and RoiManager)
+    target_link_libraries(RhizoVisionExplorer
+        PRIVATE
+            ${OpenCV_LIBS}
+            Qt6::Core
+            Qt6::Widgets
+            Qt6::Charts
+            Qt6::Gui
+            Qt6::OpenGL
+            cvutil::cvutil
+            cvutil::PluginManager
+            cvutil::RoiManager
+    )
+endif()
+
+add_executable(rv
     RhizoVisionExplorer/rv.cpp
     RhizoVisionExplorer/indicators/indicators.hpp
     ${SOURCES}
     ${HEADERS})
 
-set_target_properties(RhizoVisionExplorer PROPERTIES DEBUG_POSTFIX ${CMAKE_DEBUG_POSTFIX})
-set_target_properties(rv PROPERTIES DEBUG_POSTFIX ${CMAKE_DEBUG_POSTFIX})
-
-# Add the generated resource .cpp file to the target
-target_sources(RhizoVisionExplorer PRIVATE ${RESOURCES})
 
-# Include directories (Qt and OpenCV paths are already handled at the solution level)
-target_include_directories(RhizoVisionExplorer
-    PRIVATE
-        #${CMAKE_BINARY_DIR}/library/include
-        ${OpenCV_INCLUDE_DIRS}
-)
+set_target_properties(rv PROPERTIES DEBUG_POSTFIX ${CMAKE_DEBUG_POSTFIX})
 
 target_include_directories(rv
     PRIVATE
         #${CMAKE_BINARY_DIR}/library/include
         ${OpenCV_INCLUDE_DIRS}
 )
 
-# Link libraries (cvutil depends on PluginManager and RoiManager)
-target_link_libraries(RhizoVisionExplorer
-    PRIVATE
-        ${OpenCV_LIBS}
-        Qt6::Core
-        Qt6::Widgets
-        Qt6::Charts
-        Qt6::Gui
-        Qt6::OpenGL
-        cvutil::cvutil
-        cvutil::PluginManager
-        cvutil::RoiManager
-)
-
 target_link_libraries(rv
     PRIVATE
         ${OpenCV_LIBS}
-        Qt6::Core
-        Qt6::Widgets
-        Qt6::Charts
-        Qt6::Gui
-        Qt6::OpenGL
         cvutil::cvutil
-        cvutil::PluginManager
-        cvutil::RoiManager
 )
 
 set(CPACK_PROPERTIES_FILE "${CMAKE_BINARY_DIR}/RhizoVisionCPackProperties-$<CONFIG>.cmake")

diff --git a/README.md b/README.md
@@ -1,4 +1,13 @@
-# ![RhiZoVision Explorer Logo](./RVElogoclearback-80.png) RhizoVision Explorer
+# Information about this fork
+
+Modified source code to remove dependencies on Qt6. Needs an appropriate
+[cvutil](https://github.com/sotlampr/cvutil).
+
+TODO:
+- Better replace Q* clases with std equivalents
+- Use RoiManager (uses QtGraphicsRectItem for calculations)
+
+## ![RhiZoVision Explorer Logo](./RVElogoclearback-80.png) RhizoVision Explorer
 
 RhizoVision Explorer is free and open-source software developed for estimating root traits from images acquired from a flatbed scanner or camera. Root images are expected to have a high contrast of roots with the background, homogenous lighting, and minimal overlapping of roots. The software is built in C++ for speed and stability, using QT for the graphical user interface and OpenCV for image processing. Traits extracted by RhizoVision Explorer have been extensively validated using a physical copper wire ground truth image set, thousands of simulated roots, and comparisons with other image analysis software. The default “Broken Roots” mode is meant for roots washed out from soil cores or pots that are disconnected and provides length, volume, branching frequency, among other features, with the ability to bin measurements based on diameter thresholds. The “Whole Root” mode extracts additional root system architecture features of more intact root systems, especially excavated root crowns or rhizoboxes, such as the convex hull, angles, and holes. The software supports multiple regions of interest, batch mode, and user-defined export of processed images with overlaid features for use in reports.
 

diff --git a/RhizoVisionExplorer/feature_config.h b/RhizoVisionExplorer/feature_config.h
@@ -34,7 +34,12 @@ If not, see <https://www.gnu.org/licenses/>.
 #include <opencv2/opencv.hpp>
 #include <vector>
 
+#ifdef BUILD_GUI
 #include <QtCore/QString>
+#else
+#include <string>
+typedef std::string QString;
+#endif
 
 #define RHIZOVISION_EXPLORER_VERSION "2.5.0 Beta"
 

diff --git a/RhizoVisionExplorer/feature_extraction.cpp b/RhizoVisionExplorer/feature_extraction.cpp
@@ -868,8 +868,10 @@ static bool checkProgress(feature_config *config, QString str)
     {
         if (!config->consolemode)
         {
+#ifdef BUILD_GUI
             config->ui->updateProgress(str);
             QApplication::processEvents();
+#endif
             return config->abortprocess;
         }
         // else

diff --git a/RhizoVisionExplorer/feature_extraction.h b/RhizoVisionExplorer/feature_extraction.h
@@ -44,7 +44,11 @@ If not, see <https://www.gnu.org/licenses/>.
 //using namespace cv;
 using namespace std;
 
+#ifdef BUILD_GUI
 #include "MainUI.h"
+#else
+#include "feature_config.h"
+#endif
 
 void feature_extractor(feature_config *config);
 

diff --git a/RhizoVisionExplorer/rootsegmentprop.cpp b/RhizoVisionExplorer/rootsegmentprop.cpp
@@ -97,9 +97,12 @@ void getrootlength_new(Mat skeleton, ListofListsRef<Point> segments, PointList o
     for (int i = 0; i < segsize; i++)
     {
         simplified = doughlas_peucker(segments[i], 0.71, false); // We took the 0.71 as threshold to make sure we identify straight lines.
-        segmentsize = simplified.size() - 1;
+        segmentsize = simplified.size();
 
-        for (int j = 0; j < segmentsize; j++)
+        if (segmentsize == 0)
+            continue;
+
+        for (int j = 0; j < segmentsize-1; j++)
         {
             diff = simplified[j] - simplified[j + 1];
             rootlen += norm(diff);

diff --git a/RhizoVisionExplorer/roottopology.cpp b/RhizoVisionExplorer/roottopology.cpp
@@ -990,6 +990,11 @@ void getroottopology(Mat &_skeleton, Mat dist,
             }
         }
     }
+
+    if (segment != nullptr) {
+        delete segment;
+        segment = nullptr;
+    }
 
     //window("new1", skeleton.rowRange(3729 - 50, 3729 + 50).colRange(3400 - 50, 3400 + 50));