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mainwindow.cpp
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mainwindow.cpp
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/*#-------------------------------------------------
#
# OpenCV Superpixels Segmentation
#
# by AbsurdePhoton - www.absurdephoton.fr
#
# v2.3 - 2019/07/08
#
#-------------------------------------------------*/
#include "mainwindow.h"
#include "ui_mainwindow.h"
#include <QMessageBox>
#include <QMouseEvent>
#include <QScrollBar>
#include <QCursor>
#include <QColorDialog>
#include <QWhatsThis>
//#include <opencv2/ximgproc.hpp>
#include <ImageMagick-7/Magick++.h>
#include "mat-image-tools.h"
using namespace cv;
using namespace cv::ximgproc;
using namespace std;
using namespace Magick;
/////////////////// Window init //////////////////////
MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow)
{
ui->setupUi(this);
// window
setWindowFlags((((windowFlags() | Qt::CustomizeWindowHint)
& ~Qt::WindowCloseButtonHint) | Qt::WindowMinMaxButtonsHint)); // don't show buttons in title bar
this->setWindowState(Qt::WindowMaximized); // maximize window
setFocusPolicy(Qt::StrongFocus); // catch keyboard and mouse in priority
// Populate combo lists
ui->comboBox_algorithm->blockSignals(true); // don't trigger the automatic actions for these widgets
ui->comboBox_algorithm->addItem(tr("SLIC")); // algorithms
ui->comboBox_algorithm->addItem(tr("SLICO"));
ui->comboBox_algorithm->addItem(tr("MSLIC"));
ui->comboBox_algorithm->addItem(tr("LSC"));
ui->comboBox_algorithm->addItem(tr("SEEDS"));
ui->comboBox_algorithm->blockSignals(false);
ui->comboBox_grid_color->blockSignals(true);
ui->comboBox_grid_color->addItem(tr("Red")); // grid colors
ui->comboBox_grid_color->addItem(tr("Green"));
ui->comboBox_grid_color->addItem(tr("Blue"));
ui->comboBox_grid_color->addItem(tr("Cyan"));
ui->comboBox_grid_color->addItem(tr("Magenta"));
ui->comboBox_grid_color->addItem(tr("Yellow"));
ui->comboBox_grid_color->addItem(tr("White"));
ui->comboBox_grid_color->blockSignals(false);
ui->comboBox_algorithm->setCurrentIndex(4); // SLIC
InitializeValues(); // init all indicators and zoom etc
basedirinifile = QDir::currentPath().toUtf8().constData();
basedirinifile += "/dir.ini";
cv::FileStorage fs(basedirinifile, FileStorage::READ); // open dir ini file
if (fs.isOpened()) {
fs["BaseDir"] >> basedir; // load base dir
}
else basedir = "/home/"; // base path and file
basefile = "";
}
MainWindow::~MainWindow()
{
delete ui;
}
/////////////////// GUI //////////////////////
void MainWindow::on_button_quit_clicked()
{
int quit = QMessageBox::question(this, "Quit this wonderful program", "Are you sure you want to quit?", QMessageBox::Yes|QMessageBox::No); // quit, are you sure ?
if (quit == QMessageBox::No) // don't quit !
return;
QCoreApplication::quit();
}
void MainWindow::on_button_whats_this_clicked() // What's this function
{
QWhatsThis::enterWhatsThisMode();
}
void MainWindow::on_Tabs_currentChanged(int) // when a tab is clicked
{
if(ui->Tabs->currentIndex()==2) ui->label_segmentation->setCursor(Qt::PointingHandCursor); // labels tab ? => labels view cursor
else ui->label_segmentation->setCursor(Qt::ArrowCursor); // default cursor
}
void MainWindow::InitializeValues() // initialize all sorts of indicators, zoom, etc
{
// Hide tabs
ui->Tabs->setTabEnabled(1, false);
ui->Tabs->setTabEnabled(2, false);
// Hide drawing tools
ui->frame_draw->setVisible(false);
// LCD
ui->lcd_cells->setPalette(Qt::red);
// Global variables init
loaded = false; // main image loaded ?
computed = false; // segmentation not yet computed
color = Vec3b(0,0,255); // pen color
gridColor = Vec3b(0, 0, 255); // current grid color
zoom = 1; // init zoom
oldZoom = 1; // to detect a zoom change
zoom_type = ""; // "button" or (mouse) "wheel"
// labels list
maxLabels = 0; // for new labels
ui->comboBox_grid_color->setCurrentIndex(0);
}
/////////////////// Labels //////////////////////
int MainWindow::GetCurrentLabelNumber() // label number for use with labels_mask
{
return ui->listWidget_labels->currentItem()->data(Qt::UserRole).toInt(); // label number stored in the special field
}
void MainWindow::DeleteAllLabels(bool newLabel) // add a label to the list
{
maxLabels = 0; // reset labels
ui->listWidget_labels->blockSignals(true); // the labels list must not trigger an action
ui->listWidget_labels->clear(); // delete all labels
ui->listWidget_labels->blockSignals(false); // return to normal
if (newLabel) AddNewLabel(""); // add one new default label or not
}
void MainWindow::UnselectAllLabels() // unselect all labels in list
{
for (int n = 0; n < ui->listWidget_labels->count(); n++) // for each label
ui->listWidget_labels->item(n)->setSelected(false); // unselect it
}
QListWidgetItem* MainWindow::AddNewLabel(QString newLabel) // add a label to the list
{
UnselectAllLabels(); // the new one will be the only selected
QListWidgetItem *item = new QListWidgetItem ();
if (newLabel == "") item->setText("Rename me!"); // default text of the label
else item->setText(newLabel); // or custom text
maxLabels++; // increase total number of labels
item->setData(Qt::UserRole, maxLabels); // custom field = label number
item->setFlags(Qt::ItemIsEditable | Qt::ItemIsSelectable | Qt::ItemIsEnabled); // item enabled, editable and selectable
item->setBackground(QColor(0, 0, 255)); // label color
if (IsRGBColorDark(0, 0, 255)) // is the label color dark ?
item->setForeground(QColor(255, 255, 255)); // if so light text color
else item->setForeground(QColor(0, 0, 0)); // if not dark text color
ui->listWidget_labels->addItem(item); // add the item to the list
ui->listWidget_labels->setCurrentItem(item); // select the new label
return item; // pointer to new item
}
void MainWindow::on_listWidget_labels_currentItemChanged(QListWidgetItem *currentItem) // show current label color
{
QBrush brush = currentItem->background(); // the label color is stored in the background color of the list
ShowCurrentColor(brush.color().red(), brush.color().green(), brush.color().blue()); // show current color used
}
void MainWindow::on_listWidget_labels_itemChanged(QListWidgetItem *currentItem) // show current label text
{
ui->label_color->setText(currentItem->text()); // show label name
}
void MainWindow::on_pushButton_label_add_clicked() // add new default label
{
if (!computed) { // if image not computed yet get out
QMessageBox::warning(this, "No cells found",
"Not now!\n\nBefore anything else, compute the segmentation or load a previous session");
return;
}
AddNewLabel("");
}
void MainWindow::on_pushButton_label_hide_clicked() // hide label = set its color to 0
{
if (!computed) { // if image not computed yet get out
QMessageBox::warning(this, "No cells found",
"Not now!\n\nBefore anything else, compute the segmentation or load a previous session");
return;
}
color = Vec3b(0,0,0); // black = transparent
ShowCurrentColor(color[2], color[1], color[0]); // set black color to label
}
void MainWindow::on_pushButton_label_delete_clicked() // delete the current label
{
if (!computed) { // if image not computed yet get out
QMessageBox::warning(this, "No cells found",
"Not now!\n\nBefore anything else, compute the segmentation or load a previous session");
return;
}
if (ui->listWidget_labels->count() == 1) { // last label ?
QMessageBox::warning(this, "Delete label", "You can't delete the last label in the list");
return;
}
QListWidgetItem *item = ui->listWidget_labels->currentItem();
int deletion = QMessageBox::question(this, "Delete label", "Are you sure?\n''" + item->text() + "'' label will be deleted", QMessageBox::Yes|QMessageBox::No); // sure ?
if (deletion == QMessageBox::No) // don't delete it !
return;
Mat1b superpixel_mask = labels_mask == GetCurrentLabelNumber(); // extract label to delete from labels mask
mask.setTo(0, superpixel_mask); // set 0 (= unclaimed) to labels mask
ShowSegmentation(); // display mask
int row = ui->listWidget_labels->currentRow(); // current label to delete
ui->listWidget_labels->removeItemWidget(item); // delete item object
ui->listWidget_labels->takeItem(row); // delete label from list
}
void MainWindow::on_pushButton_label_join_clicked() // join 2 or more labels, result to one selected label
{
int join = QMessageBox::question(this, "Join labels", "Are you sure?\n\nSelected labels in the list will be joined", QMessageBox::Yes|QMessageBox::No); // sure ?
if (join == QMessageBox::No) // join the mask !
return;
QList<QListWidgetItem *> items = ui->listWidget_labels->selectedItems(); // get selected items
if (items.count() < 2) // only one label selected ?
{
QMessageBox::warning(this, "Join labels",
"You have to select more than one label to join");
return;
}
QBrush brush = items[0]->background(); // color of first label encountered: this label will contain the result
Vec3b col = Vec3b(brush.color().red(), brush.color().green(), brush.color().blue()); // get its color
int id = items[0]->data(Qt::UserRole).toInt(); // and get its label number for labels mask
for (int i = 1; i < items.count(); i++) { // each item of the list minus the first
Mat1b superpixel_mask = labels_mask == items[i]->data(Qt::UserRole).toInt(); // label number for labels mask
labels_mask.setTo(id, superpixel_mask); // claim cells for the first label
mask.setTo(col, superpixel_mask); // and set its color to the mask
ui->listWidget_labels->setCurrentItem(items[i]); // select the item
int row = ui->listWidget_labels->currentRow(); // find its row number in the list
ui->listWidget_labels->removeItemWidget(items[i]); // delete this item
ui->listWidget_labels->takeItem(row); // and delete the label from the list
}
items[0]->setText(items[0]->text() + " (joined)"); // add "join" to the first label name containing the result
ShowSegmentation(); // show result
}
void MainWindow::on_pushButton_label_draw_clicked() // special mode to modify the cells (superpixels)
{
if (!computed) { // if image not computed yet get out
QMessageBox::warning(this, "No cells found",
"Not now!\n\nBefore anything else, compute the segmentation or load a previous session");
ui->pushButton_label_draw->setChecked(false); // get out of the special mode
return;
}
if (ui->pushButton_label_draw->isChecked()) { // initialize cell update
ui->label_segmentation->setCursor(Qt::CrossCursor); // cursor change to show this is a special mode
ui->frame_pick_colors->setVisible(false); // disable all tabs/elements to keep the user in the special mode
ui->pushButton_label_add->setVisible(false);
ui->pushButton_label_delete->setVisible(false);
ui->pushButton_label_hide->setVisible(false);
ui->pushButton_label_join->setVisible(false);
ui->button_load_session->setVisible(false);
ui->button_save_session->setVisible(false);
ui->pushButton_psd->setVisible(false);
ui->pushButton_tif->setVisible(false);
ui->button_quit->setVisible(false);
ui->frame_draw->setVisible(true);
ui->Tabs->setTabEnabled(0, false);
ui->Tabs->setTabEnabled(1, false);
ui->listWidget_labels->setEnabled(false);
ui->checkBox_mask->setChecked(true);
ui->pushButton_draw_grabcut_iteration->setVisible(false);
ui->checkBox_selection->setChecked(false);
mask.copyTo(draw_cell_mask_save); // save all the masks
labels_mask.copyTo(draw_cell_labels_mask_save);
labels.copyTo(draw_cell_labels_save);
grid.copyTo(draw_cell_grid_save);
pos_save = cv::Point(-1, -1); // no first line point defined
}
else { // special mode ended by clicking again the button
int draw = QMessageBox::question(this, "Update cells", "Are you sure you want to update the cells from the white mask?\nIf not, the mask will be deleted", QMessageBox::Yes|QMessageBox::No); // really update the cells ?
double min, max;
minMaxIdx(labels, &min, &max); // find the highest superpixel number
int maxLabel = max + 1; // superpixel value of new cell
Mat1b white_mask;
inRange(mask, Vec3b(255, 255, 255), Vec3b(255, 255, 255), white_mask); // extract white color from mask
if ((cv::sum(white_mask) != Scalar(0,0,0)) & (draw == QMessageBox::Yes)) { // update the cells
vector<vector<cv::Point>> contours;
vector<Vec4i> hierarchy;
findContours(white_mask, contours, RETR_EXTERNAL, CHAIN_APPROX_SIMPLE); // find new cell contours
grid.setTo(0, white_mask); // erase cell in grid mask
drawContours(grid, contours, -1, gridColor, 1, 8, hierarchy ); // draw contour of new cell in grid
draw_cell_mask_save.copyTo(mask); // restore mask
labels.setTo(maxLabel, white_mask); // set new superpixel value in labels
labels_mask.setTo(GetCurrentLabelNumber(), white_mask); // set current label value in labels mask
mask.setTo(color, white_mask); // update mask with current label color
}
else // don't update the cells !
{
if ((cv::sum(white_mask) == Scalar(0,0,0)) & (draw == QMessageBox::Yes))
QMessageBox::warning(this, "Not updating the cells",
"The mask was empty, cells not updated");
draw_cell_mask_save.copyTo(mask); // restore original mask
ShowSegmentation(); // show view back to previous state
}
//SaveUndo(); // save current state
ui->label_segmentation->setCursor(Qt::PointingHandCursor); // cursor back to normal
ui->frame_pick_colors->setVisible(true); // show again the elements hidden for the special mode
ui->pushButton_label_add->setVisible(true);
ui->pushButton_label_delete->setVisible(true);
ui->pushButton_label_hide->setVisible(true);
ui->pushButton_label_join->setVisible(true);
ui->button_load_session->setVisible(true);
ui->button_save_session->setVisible(true);
ui->pushButton_psd->setVisible(true);
ui->pushButton_tif->setVisible(true);
ui->button_quit->setVisible(true);
ui->frame_draw->setVisible(false);
ui->Tabs->setTabEnabled(0, true);
ui->Tabs->setTabEnabled(1, true);
ui->listWidget_labels->setEnabled(true);
ui->checkBox_selection->setChecked(true);
ShowCurrentColor(color[2], color[1], color[0]); // redraw label
}
}
void MainWindow::on_pushButton_draw_clear_clicked() // clear the cell drawing mask
{
SaveUndo(); // save current state
draw_cell_mask_save.copyTo(mask); // Restore current mask
ShowSegmentation(); // show view back to previous state
}
void MainWindow::on_pushButton_draw_grabcut_clicked() // use GrabCut in cell drawing mode
{
SaveUndo(); // save current state
QApplication::setOverrideCursor(Qt::WaitCursor); // wait cursor
grabcut_mask = Mat::zeros(image.rows, image.cols, CV_8UC1);
grabcut_mask = GC_BGD; // init GrabCut with 'maybe Background'
grabcut_foreground.release(); // clear grabcut internal masks
grabcut_background.release();
Mat1b mask_tmp = Mat::zeros(image.rows, image.cols, CV_8UC1); // to find white, red or blue pixels
cv::inRange(mask, Vec3b(255,255,255), Vec3b(255,255,255), mask_tmp); // find white
grabcut_mask.setTo(GC_FGD, mask_tmp); // white = foreground
cv::inRange(mask, Vec3b(0,0,255), Vec3b(0,0,255), mask_tmp); // find red
grabcut_mask.setTo(GC_BGD, mask_tmp); // red = background
cv::inRange(mask, Vec3b(255,0,0), Vec3b(255,0,0), mask_tmp); // find blue
grabcut_mask.setTo(GC_PR_FGD, mask_tmp); // blue = maybe foreground
cv::grabCut(image, // input image
grabcut_mask, // segmentation result
cv::Rect(0,0,image.cols,image.rows), // rectangle containing foreground, not used here
grabcut_background, grabcut_foreground, // internal for GrabCut
1, // number of iterations = 1
cv::GC_INIT_WITH_MASK); // init with mask (not rectangle)
draw_cell_mask_save.copyTo(mask); // restore mask
cv::inRange(grabcut_mask, GC_FGD, GC_FGD, mask_tmp); // get 'sure' foreground pixels
mask.setTo(Vec3b(255,255,255), mask_tmp); // set foreground = white in mask
cv::inRange(grabcut_mask, GC_PR_FGD, GC_PR_FGD, mask_tmp); // get 'maybe' foreground pixels
mask.setTo(Vec3b(255,0,0), mask_tmp); // set maybe = blue in mask
QApplication::restoreOverrideCursor(); // Restore cursor
ui->pushButton_draw_grabcut_iteration->setVisible(true); // show the new iteration button
ShowSegmentation(); // show GrabCut result
}
void MainWindow::on_pushButton_draw_grabcut_iteration_clicked() // repeat GrabCut in cell drawing mode
{
Mat1b mask_tmp; // temp mask
QApplication::setOverrideCursor(Qt::WaitCursor); // wait cursor
cv::grabCut(image, // input image
grabcut_mask, // segmentation result
cv::Rect(0,0,image.cols,image.rows), // rectangle containing foreground, not used here
grabcut_background, grabcut_foreground, // internal for GrabCut
1, // number of iterations = 1
cv::GC_EVAL); // resume algorithm
draw_cell_mask_save.copyTo(mask); // restore mask
cv::inRange(grabcut_mask, GC_FGD, GC_FGD, mask_tmp); // get 'sure' foreground pixels
mask.setTo(Vec3b(255,255,255), mask_tmp); // set foreground = white in mask
cv::inRange(grabcut_mask, GC_PR_FGD, GC_PR_FGD, mask_tmp); // get 'maybe' foreground pixels
mask.setTo(Vec3b(255,0,0), mask_tmp); // set maybe = blue in mask
QApplication::restoreOverrideCursor(); // Restore cursor
ShowSegmentation(); // show GrabCut result
}
Vec3b MainWindow::DrawColor() // return drawing color in cell drawing mode
{
Vec3b draw_color;
if (ui->radioButton_draw_mask->isChecked()) draw_color = Vec3b(255, 255, 255); // white = keep
if (ui->radioButton_draw_reject->isChecked()) draw_color = Vec3b(0, 0, 255); // red = reject
if (ui->radioButton_draw_maybe->isChecked()) draw_color = Vec3b(255, 0, 0); // blue = maybe
return draw_color;
}
/////////////////// Save and load //////////////////////
void MainWindow::SaveDirBaseFile()
{
cv::FileStorage fs(basedirinifile, cv::FileStorage::WRITE); // open dir ini file for writing
fs << "BaseDir" << basedir; // write folder name
fs.release(); // close file
}
void MainWindow::on_pushButton_psd_clicked() // save image (background) + layers (labels) to PSD Photoshop image
{
SavePSDorTIF("psd");
}
void MainWindow::on_pushButton_tif_clicked() // save image + layers as pages to multipage TIFF image
{
SavePSDorTIF("tif");
}
Magick::Image Mat2Magick(const Mat &src) // image conversion from Mat to Magick (only for RGB images)
{
Magick::Image mgk(Geometry(src.cols, src.rows), "black"); // result image
mgk.read(src.cols, src.rows, "BGR", Magick::CharPixel, (char*)src.data); // transfer image data from Mat
return mgk;
}
void MainWindow::SavePSDorTIF(std::string type) // save image + layers to PSD or TIFF image
{
if (!loaded) { // if image not loaded yet get out
QMessageBox::warning(this, "Image not loaded",
"Not now!\n\nBefore anything else, load an image");
return;
}
std::string ext = type; // file type
std::transform(type.begin(), type.end(), type.begin(), ::toupper); // file type uppercase
QString filename = QFileDialog::getSaveFileName(this, "Save labels to multi-layers image file...", // choose filename
"./" + QString::fromStdString(basedir + basefile + "-segmentation-labels." + ext),
QString::fromStdString("*." + ext + " *." + type));
if (filename.isNull() || filename.isEmpty()) // cancel ?
return;
QApplication::setOverrideCursor(Qt::WaitCursor); // wait cursor
std::string fileImage = filename.toUtf8().constData(); // convert filename to std::string
if (type == "TIF") type = "TIFF"; // add a F to TIF
vector<Image> imageList; // layers (labels) list
Magick::Image bkg; // result
bkg = Mat2Magick(image); // convert image
bkg.magick(type); // set layer type to PSD or TIFF
if (type == "PSD") bkg.compressType(RLECompression); // RLE compression for PSD
else bkg.compressType(LZWCompression); // and LZW for TIFF
bkg.density(300); // dpi
bkg.resolutionUnits(PixelsPerInchResolution); // dpi unit
bkg.label("Background"); // for Photoshop image is the "background"
imageList.push_back(bkg); // add image to the list
if (type == "PSD") imageList.push_back(bkg); // for PSD the first image is the preview, the second is the background
int nb_count = ui->listWidget_labels->count(); // how many layerss (labels) to save ?
for (int i = 0; i < nb_count; i++) { // for each label
QListWidgetItem *item = ui->listWidget_labels->item(i); // this label from the list
int id = item->data(Qt::UserRole).toInt(); // get its label id for labels mask
//std::string name = std::to_string(i) + "-" + item->text().toUtf8().constData(); // unique label name
std::string name = item->text().toUtf8().constData(); // convert label name to std::string
QBrush brush = item->background(); // label color
Vec3b col = Vec3b(brush.color().red(), brush.color().green(), brush.color().blue());
Mat1b superpixel_mask = labels_mask == id; // extract label
Mat save; // current layer image
image.copyTo(save); // copy image structure
save = 0; // set it to 0 (transparent)
save.setTo(Vec3b(col[2], col[1], col[0]), superpixel_mask); // copy cells to layer
Magick::Image img(Geometry(image.cols, image.rows), "black"); // Magick current layer
img = Mat2Magick(save); // convert Mat layer to Magick layer
if (type == "TIFF") bkg.depth(8); // 8-bit TIFF
img.transparent(Magick::Color(0,0,0)); // set the transparent color
if (type == "PSD") img.compressType(RLECompression); // RLE compression for PSD
else img.compressType(LZWCompression); // and LZW for TIFF
img.label(name); // set the name (doesn't work for TIFF pages)
img.density(300); // dpi
img.resolutionUnits(PixelsPerInchResolution); // dpi unit
img.magick(type); // set PSD or TIFF type
imageList.push_back(img); // save the image to the list
}
Magick::writeImages(imageList.begin(), imageList.end(), fileImage, true); // Write result to disk
QApplication::restoreOverrideCursor(); // Restore cursor
}
void MainWindow::on_button_image_clicked() // Load main image
{
QString filename = QFileDialog::getOpenFileName(this, "Select picture file", QString::fromStdString(basedir),
tr("Images (*.jpg *.jpeg *.jp2 *.png *.tif *.tiff)")); // image filename
if (filename.isNull() || filename.isEmpty()) // cancel ?
return;
basefile = filename.toUtf8().constData(); // base file name and dir are used after to save other files
basefile = basefile.substr(0, basefile.size()-4); // strip the file extension
basedir = basefile;
size_t found = basefile.find_last_of("/"); // find last directory
basedir = basedir.substr(0,found) + "/"; // extract file location
basefile = basefile.substr(found+1); // delete ending slash
ui->label_filename->setText(filename); // display file name in ui
SaveDirBaseFile(); // Save current path to ini file
std::string filename_s = filename.toUtf8().constData(); // convert filename from QString
cv::Mat mat = cv::imread(filename_s, IMREAD_COLOR); // Load image
if (mat.empty()) { // problem ?
QMessageBox::critical(this, "File error",
"There was a problem reading the image file");
return;
}
ui->label_thumbnail->setPixmap(QPixmap()); // unset all images in GUI
ui->label_segmentation->setPixmap(QPixmap());
ui->label_thumbnail->setPixmap(Mat2QPixmapResized(mat, ui->label_thumbnail->width(), ui->label_thumbnail->height(), true)); // Show thumbnail
image = mat; // store the image for further use
mat.copyTo(image_backup); // for undo
selection = Mat::zeros(image.rows, image.cols, CV_8UC3); // init selection mask
ui->label_segmentation->setPixmap(QPixmap()); // Delete the depthmap image
ui->label_segmentation->setText("Segmentation not computed"); // Text in the segmentation area
ui->horizontalScrollBar_segmentation->setMaximum(0); // update scrollbars
ui->verticalScrollBar_segmentation->setMaximum(0);
ui->horizontalScrollBar_segmentation->setValue(0);
ui->verticalScrollBar_segmentation->setValue(0);
ui->lcd_cells->setPalette(Qt::red); // LCD count red = not yet computed
ui->lcd_cells->display(0); // LCD count
ui->label_image_width->setText(QString::number(image.cols)); // display image dimensions
ui->label_image_height->setText(QString::number(image.rows));
InitializeValues(); // reset all variables
double zoomX = double(ui->label_segmentation->width()) / image.cols; // try vertical and horizontal ratios
double zoomY = double(ui->label_segmentation->height()) / image.rows;
if (zoomX < zoomY) zoom = zoomX; // the lowest fit the view
else zoom = zoomY;
oldZoom = zoom; // for center view
ShowZoomValue(); // display current zoom
viewport = Rect(0, 0, image.cols, image.rows); // update viewport
cv::resize(image, thumbnail, Size(ui->label_thumbnail->pixmap()->width(),ui->label_thumbnail->pixmap()->height()),
0, 0, INTER_AREA); // create thumbnail
mask.release(); // reinit mask
grid.release(); // reinit grid
undo_mask.release(); // reinit undo masks
undo_labels.release();
selection.release();
loaded = true; // image loaded successfuly
computed = false; // segmentation not performed
DeleteAllLabels(true); // empty a previous labels list
SaveUndo(); // for undo
CopyFromImage(image, viewport).copyTo(disp_color); // copy only the viewport part of image
QPixmap D;
D = Mat2QPixmapResized(disp_color, int(viewport.width*zoom), int(viewport.height*zoom), true); // zoomed image
ui->label_segmentation->setPixmap(D); // Set new image content to viewport
DisplayThumbnail(); // update thumbnail view
ShowSegmentation(); // show the result
ui->Tabs->setTabEnabled(1, true); // enable Segmentation and Labels tabs
ui->Tabs->setTabEnabled(2, true);
}
void MainWindow::on_button_save_session_clicked() // save session files
{
if (!computed) { // if image not computed yet get out
QMessageBox::warning(this, "No cells found",
"Not now!\n\nBefore anything else, compute the segmentation or load a previous session");
return;
}
QString filename = QFileDialog::getSaveFileName(this, "Save session to XML file...", "./" + QString::fromStdString(basedir + basefile + "-segmentation-data.xml"), tr("XML (*.xml)")); // filename
if (filename.isNull() || filename.isEmpty()) // cancel ?
return;
std::string filesession = filename.toUtf8().constData(); // base file name
size_t pos = filesession.find("-segmentation-data.xml");
if (pos != std::string::npos) filesession.erase(pos, filesession.length());
pos = filesession.find(".xml");
if (pos != std::string::npos) filesession.erase(pos, filesession.length());
bool write;
write = cv::imwrite(filesession + "-segmentation-mask.png", mask); // save mask
if (!write) {
QMessageBox::critical(this, "File error",
"There was a problem saving the segmentation mask image file");
return;
}
write = cv::imwrite(filesession + "-segmentation-grid.png", grid); // save grid
if (!write) {
QMessageBox::critical(this, "File error",
"There was a problem saving the segmentation grid image file");
return;
}
write = cv::imwrite(filesession + "-segmentation-image.png", image); // save processed image
if (!write) {
QMessageBox::critical(this, "File error",
"There was a problem saving the segmentation image file");
return;
}
cv::FileStorage fs(filesession + "-segmentation-data.xml", cv::FileStorage::WRITE); // open labels file for writing
if (!fs.isOpened()) {
QMessageBox::critical(this, "File error",
"There was a problem writing the segmentation data file");
return;
}
int gridValue = ui->comboBox_grid_color->currentIndex(); // save grid color
fs << "GridColor" << gridValue; // write labels count
int nb_count = ui->listWidget_labels->count(); // how many labels to save ?
fs << "LabelsCount" << nb_count; // write labels count
for (int i = 0; i < nb_count; i++) { // for each label
std::string field;
QListWidgetItem *item = ui->listWidget_labels->item(i); // label id
field = "LabelId" + std::to_string(i);
fs << field << item->data(Qt::UserRole).toInt(); // write label id
std::string name = item->text().toUtf8().constData(); // write label name
field = "LabelName" + std::to_string(i);
fs << field << name;
QBrush brush = item->background(); // write label color
Vec3b col = Vec3b(brush.color().red(), brush.color().green(), brush.color().blue());
field = "LabelColor" + std::to_string(i);
fs << field << col;
}
fs << "Labels" << labels; // write labels Mat
fs << "LabelsMask" << labels_mask; // write labels mask Mat
fs.release(); // close file
QMessageBox::information(this, "Save segmentation session", "Session saved with base name:\n" + QString::fromStdString(filesession));
basefile = filesession; // base file name and dir are used after to save other files
basedir = basefile;
size_t found = basefile.find_last_of("/"); // find last directory
basedir = basedir.substr(0,found) + "/"; // extract file location
basefile = basefile.substr(found+1); // delete ending slash
pos = basefile.find("-segmentation-data");
if (pos != std::string::npos) basefile.erase(pos, basefile.length());
ui->label_filename->setText(filename); // display file name in ui
SaveDirBaseFile(); // Save current path to ini file
}
void MainWindow::on_button_load_session_clicked() // load previous session
{
//if (image.empty()) // image mandatory
// return;
QString filename = QFileDialog::getOpenFileName(this, "Load session from XML file...", QString::fromStdString(basedir), tr("XML (*.xml)"));
if (filename.isNull() || filename.isEmpty()) // cancel ?
return;
basefile = filename.toUtf8().constData(); // base file name and dir are used after to save other files
size_t pos = basefile.find(".xml");
if (pos != std::string::npos) basefile.erase(pos, basefile.length());
basedir = basefile;
size_t found = basefile.find_last_of("/"); // find last directory
basedir = basedir.substr(0,found) + "/"; // extract file location
basefile = basefile.substr(found+1); // delete ending slash
pos = basefile.find("-segmentation-data");
if (pos != std::string::npos) basefile.erase(pos, basefile.length());
ui->label_filename->setText(filename); // display file name in ui
SaveDirBaseFile(); // Save current path to ini file
std::string filesession = filename.toUtf8().constData(); // base file name
pos = filesession.find("-segmentation-data.xml");
if (pos != std::string::npos) filesession.erase(pos, filesession.length());
InitializeValues(); // reinit all variables
image.release();
mask.release();
grid.release();
mask = cv::imread(filesession + "-segmentation-mask.png", IMREAD_COLOR); // load mask
if (mask.empty()) {
QMessageBox::critical(this, "File error",
"There was a problem reading the segmentation mask file:\nit must end with ''-segmentation-mask.png''");
return;
}
grid = cv::imread(filesession + "-segmentation-grid.png"); // load grid
if (grid.empty()) {
QMessageBox::critical(this, "File error",
"There was a problem reading the segmentation grid file:\nit must end with ''-segmentation-grid.png''");
return;
}
image = cv::imread(filesession + "-segmentation-image.png"); // load processed image
if (image.empty()) {
QMessageBox::critical(this, "File error",
"There was a problem reading the segmentation image file:\nit must end with ''-segmentation-image.png''");
return;
}
DeleteAllLabels(false); // delete all labels but do not create a new one
cv::FileStorage fs(filesession + "-segmentation-data.xml", FileStorage::READ); // open labels file
if (!fs.isOpened()) {
QMessageBox::critical(this, "File error",
"There was a problem reading the segmentation data file:\nit must end with ''-segmentation-data.xml''");
return;
}
Mat labels_temp(image.rows, image.cols, CV_32SC1);
fs["Labels"] >> labels_temp; // load labels
labels_temp.copyTo(labels);
fs["LabelsMask"] >> labels_temp; // load labels mask
labels_temp.copyTo(labels_mask);
maxLabels = 0; // reset label count
int nb_count, gridValue;
fs["GridColor"] >> gridValue; // grid color
fs["LabelsCount"] >> nb_count; // read how many labels to load ?
for (int i = 0; i < nb_count; i++) { // for each label to load
QListWidgetItem *item = new QListWidgetItem (); // create new label
std::string field;
int num;
field = "LabelId" + std::to_string(i); // read label id
fs [field] >> num;
item->setData(Qt::UserRole, num); // set it to current label
if (num > maxLabels) maxLabels = num; // numLabels must be equal to the max label value
std::string name;
field = "LabelName" + std::to_string(i); // read label name
fs [field] >> name;
item->setText(QString::fromStdString(name)); // set name to current label
Vec3b col;
field = "LabelColor" + std::to_string(i); // read label color
fs [field] >> col;
item->setBackground(QColor(col[0], col[1], col[2])); // set color to current label
if (IsRGBColorDark(col[0], col[1], col[2])) // set text color relative to background darkness
item->setForeground(QColor(255, 255, 255));
else item->setForeground(QColor(0, 0, 0));
item->setFlags(Qt::ItemIsEditable | Qt::ItemIsSelectable | Qt::ItemIsEnabled); // item enabled, editable and selectable
ui->listWidget_labels->addItem(item); // add the new item to the list
ui->listWidget_labels->setCurrentItem(item); // select the new label
item->setSelected(false); // don't select it !
ui->Tabs->setTabEnabled(1, true); // enable Segmentation and Labels tabs
ui->Tabs->setTabEnabled(2, true);
ui->Tabs->setCurrentIndex(2);
}
fs.release(); // close file
ui->label_thumbnail->setPixmap(QPixmap()); // reinit all images in GUI
ui->label_segmentation->setPixmap(QPixmap());
ui->label_thumbnail->setPixmap(Mat2QPixmapResized(image, ui->label_thumbnail->width(), ui->label_thumbnail->height(), true)); // Show thumbnail
double zoomX = double(ui->label_segmentation->width()) / image.cols; // try vertical and horizontal ratios
double zoomY = double(ui->label_segmentation->height()) / image.rows;
if (zoomX < zoomY) zoom = zoomX; // the lowest fit the view
else zoom = zoomY;
oldZoom = zoom; // for center view
ShowZoomValue(); // display current zoom
viewport = Rect(0, 0, image.cols, image.rows); // update viewport
cv::resize(image, thumbnail, Size(ui->label_thumbnail->pixmap()->width(),ui->label_thumbnail->pixmap()->height()),
0, 0, INTER_AREA); // create thumbnail
undo_mask.release(); // reinit undo masks
undo_labels.release();
selection.release();
image.copyTo(image_backup); // for undo
selection = Mat::zeros(image.rows, image.cols, CV_8UC3);
double min, max;
minMaxIdx(labels, &min, &max); // find the highest superpixel number
ui->lcd_cells->setPalette(Qt::red); // LCD count red = not yet computed
ui->lcd_cells->display(max); // LCD count
ui->label_image_width->setText(QString::number(image.cols)); // display image dimensions
ui->label_image_height->setText(QString::number(image.rows));
SaveUndo(); // for undo
loaded = true; // done !
computed = true; // not really computed but necessary
ui->comboBox_grid_color->setCurrentIndex(gridValue); // update grid color in ui
UnselectAllLabels(); // only the first label must be selected
ui->listWidget_labels->setCurrentRow(0);
//QMessageBox::information(this, "Load segmentation session", "Session loaded with base name:\n" + QString::fromStdString(filesession));
}
void MainWindow::on_button_save_conf_clicked() // save configuration
{
QString filename = QFileDialog::getSaveFileName(this, "Save configuration to XML file...", "./" + QString::fromStdString(basedir + basefile + "-segmentation-conf.xml"), tr("XML (*.xml)"));
if (filename.isNull() || filename.isEmpty()) // cancel ?
return;
std::string filename_s = filename.toUtf8().constData(); // Convert from QString
int algorithm = ui->comboBox_algorithm->currentIndex(); // Initialize variables to save from GUI
int region_size = ui->horizontalSlider_region_size->value();
int ruler = ui->horizontalSlider_ruler->value();
int min_element_size = ui->horizontalSlider_connectivity->value();
int num_iterations = ui->horizontalSlider_iterations->value();
int line_color = ui->comboBox_grid_color->currentIndex();
bool thick_lines = ui->checkBox_thick->isChecked();
int num_superpixels = ui->horizontalSlider_num_superpixels->value();
int num_levels = ui->horizontalSlider_num_levels->value();
int prior = ui->horizontalSlider_prior->value();
int num_histogram_bins = ui->horizontalSlider_num_histogram_bins->value();
bool double_step = ui->checkBox_double_step->isChecked();
double ratio = ui->doubleSpinBox_ratio->value();
bool lab = ui->checkBox_lab_colors->isChecked();
bool gaussian_blur = ui->checkBox_gaussian_blur->isChecked();
bool normalize = ui->checkBox_normalize->isChecked();
bool equalize = ui->checkBox_equalize->isChecked();
bool color_balance = ui->checkBox_color_balance->isChecked();
int color_balance_percent = ui->spinBox_color_balance_percent->value();
bool contours = ui->checkBox_contours->isChecked();
int contours_sigma = ui->spinBox_contours_sigma->value();
int contours_thickness = ui->spinBox_contours_thickness->value();
int contours_aperture = ui->comboBox_contours_aperture->currentIndex() * 2 + 3;
bool denoise = ui->checkBox_denoise->isChecked();
int luminance = ui->horizontalSlider_luminance->value();
int chrominance = ui->horizontalSlider_chrominance->value();
FileStorage fs(filename_s, FileStorage::WRITE); // save to openCV XML file type
if (!fs.isOpened()) {
QMessageBox::critical(this, "File error",
"There was a problem writing the configuration file");
return;
}
//// Segmentation parameters
fs << "Algorithm" << algorithm;
fs << "RegionSize" << region_size;
fs << "Ruler" << ruler;
fs << "Connectivity" << min_element_size;
fs << "NumIterations" << num_iterations;
fs << "Superpixels" << num_superpixels;
fs << "Levels" << num_levels;
fs << "Prior" << prior;
fs << "Histograms" << num_histogram_bins;
fs << "DoubleStep" << double_step;
fs << "Ratio" << ratio;
fs << "ThickLines" << thick_lines;
fs << "LabColors" << lab;
fs << "Color" << line_color;
//// image pre-production parameters
fs << "ColorBalance" << color_balance;
fs << "ColorBalancePercent" << color_balance_percent;
fs << "GaussianBlur" << gaussian_blur;
fs << "Normalize" << normalize;
fs << "Equalize" << equalize;
fs << "Contours" << contours;
fs << "ContoursSigma" << contours_sigma;
fs << "ContoursThickness" << contours_thickness;
fs << "ContoursAperture" << contours_aperture;
fs << "Noise" << denoise;
fs << "NoiseLuminance" << luminance;
fs << "NoiseChrominance" << chrominance;
fs.release(); // close file
QMessageBox::information(this, "Save configuration", "Configuration saved to:\n" + filename);
}
void MainWindow::on_button_load_conf_clicked() // load configuration
{
QString filename = QFileDialog::getOpenFileName(this, "Select XML configuration file", QString::fromStdString(basedir + basefile + "-segmentation-conf.xml"), tr("XML (*.xml)")); // filename
if (filename.isNull()) // cancel ?
return;
std::string filename_s = filename.toUtf8().constData(); // convert filename from QString to std::string
// Initialize variables to save
int algorithm, region_size, ruler, min_element_size, num_iterations, line_color, color_balance_percent,
num_superpixels, num_levels, prior, num_histogram_bins,
contours_sigma, contours_thickness, contours_aperture, luminance, chrominance;
double ratio;
bool thick_lines, double_step, lab, gaussian_blur, equalize, normalize, color_balance, contours, denoise;
FileStorage fs(filename_s, FileStorage::READ); // load from openCV XML file
if (!fs.isOpened()) {
QMessageBox::critical(this, "File error",
"There was a problem reading the configuration file");
return;
}
fs["Algorithm"] >> algorithm;
fs["RegionSize"] >> region_size;
fs["Ruler"] >> ruler;
fs["Connectivity"] >> min_element_size;
fs["NumIterations"] >> num_iterations;
fs["Superpixels"] >> num_superpixels;
fs["Levels"] >> num_levels;
fs["Prior"] >> prior;
fs["Histograms"] >> num_histogram_bins;
fs["DoubleStep"] >> double_step;
fs["Ratio"] >> ratio;
fs["ThickLines"] >> thick_lines;
fs["LabColors"] >> lab;
fs["Color"] >> line_color;
fs["ColorBalance"] >> color_balance;
fs["ColorBalancePercent"] >> color_balance_percent;
fs["GaussianBlur"] >> gaussian_blur;
fs["Normalize"] >> normalize;
fs["Equalize"] >> equalize;
fs["Contours"] >> contours;
fs["ContoursSigma"] >> contours_sigma;
fs["ContoursThickness"] >> contours_thickness;
fs["ContoursAperture"] >> contours_aperture;
fs["Noise"] >> denoise;
fs["NoiseLuminance"] >> luminance;
fs["NoiseChrominance"] >> chrominance;
fs.release();