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Change Coordinate system: Relative to Absolute

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This commit is contained in:
yonghye 2018-11-06 20:27:12 +09:00
parent ec5462e2d7
commit 25bc781e66
3 changed files with 117 additions and 64 deletions
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130
label_img.cpp
View File

@ -40,13 +40,13 @@ void label_img::mousePressEvent(QMouseEvent *ev)
if(ev->button() == Qt::RightButton) if(ev->button() == Qt::RightButton)
{ {
removeFocusedObjectBox(m_mouse_pos_in_image_coordinate); removeFocusedObjectBox(m_relative_mouse_pos_in_ui);
showImage(); showImage();
} }
else if(ev->button() == Qt::LeftButton) else if(ev->button() == Qt::LeftButton)
{ {
m_bMouseLeftButtonClicked = true; m_bMouseLeftButtonClicked = true;
m_leftButtonClickedPoint = m_mouse_pos_in_image_coordinate; m_relatvie_mouse_pos_LBtnClicked_in_ui = m_relative_mouse_pos_in_ui;
} }
emit Mouse_Pressed(); emit Mouse_Pressed();
@ -63,18 +63,19 @@ void label_img::mouseReleaseEvent(QMouseEvent *ev)
ObjectLabelingBox objBoundingbox; ObjectLabelingBox objBoundingbox;
objBoundingbox.label = m_focusedObjectLabel; objBoundingbox.label = m_focusedObjectLabel;
objBoundingbox.box = getRectFromTwoPoints(m_mouse_pos_in_image_coordinate, m_leftButtonClickedPoint); objBoundingbox.box = getRelativeRectFromTwoPoints(m_relative_mouse_pos_in_ui,
m_relatvie_mouse_pos_LBtnClicked_in_ui);
bool width_is_too_small = objBoundingbox.box.width() < m_inputImg.width() * 0.01; bool width_is_too_small = objBoundingbox.box.width() < 0.01;
bool height_is_too_small = objBoundingbox.box.height() < m_inputImg.height() * 0.01; bool height_is_too_small = objBoundingbox.box.height() < 0.01;
if(!width_is_too_small && !height_is_too_small) if(!width_is_too_small && !height_is_too_small)
m_objBoundingBoxes.push_back(objBoundingbox); m_objBoundingBoxes.push_back(objBoundingbox);
showImage();
m_bMouseLeftButtonClicked = false; m_bMouseLeftButtonClicked = false;
} }
showImage();
emit Mouse_Release(); emit Mouse_Release();
} }
@ -86,22 +87,17 @@ void label_img::setMousePosition(int x, int y)
if(x > this->width()) x = this->width() - 1; if(x > this->width()) x = this->width() - 1;
if(y > this->height()) y = this->height() - 1; if(y > this->height()) y = this->height() - 1;
m_aspectRatioWidth = static_cast<double>(m_inputImg.width()) / this->width(); m_relative_mouse_pos_in_ui = cvtAbsoluteToRelativePoint(QPoint(x, y));
m_aspectRatioHeight = static_cast<double>(m_inputImg.height()) / this->height();
m_mouse_pos_in_image_coordinate = QPoint(static_cast<int>(x * m_aspectRatioWidth + 0.5),
static_cast<int>(y * m_aspectRatioHeight + 0.5));
} }
void label_img::openImage(const QString &qstrImg) void label_img::openImage(const QString &qstrImg)
{ {
m_inputImg = QImage(qstrImg); m_inputImg = QImage(qstrImg);
m_inputImg = m_inputImg.convertToFormat(QImage::Format_RGB888); m_inputImg = m_inputImg.convertToFormat(QImage::Format_RGB888);
m_inputImgCopy = m_inputImg;
m_objBoundingBoxes.clear(); m_objBoundingBoxes.clear();
m_leftButtonClickedPoint = QPoint(); m_relatvie_mouse_pos_LBtnClicked_in_ui = QPointF();
m_bMouseLeftButtonClicked = false; m_bMouseLeftButtonClicked = false;
@ -112,21 +108,17 @@ void label_img::openImage(const QString &qstrImg)
{ {
setMousePosition(mousePosInUi.x(), mousePosInUi.y()); setMousePosition(mousePosInUi.x(), mousePosInUi.y());
} }
else
{
m_mouse_pos_in_image_coordinate = QPoint();
}
} }
void label_img::showImage() void label_img::showImage()
{ {
if(m_inputImg.isNull()) return; if(m_inputImg.isNull()) return;
m_inputImg = m_inputImgCopy; QImage imageOnUi = m_inputImg.scaled(this->width(), this->height());
QPainter painter(&m_inputImg); QPainter painter(&imageOnUi);
int penThick = (m_inputImg.width() + m_inputImg.height())/400; int penThick = 3;
QColor crossLineColor(255, 187, 0); QColor crossLineColor(255, 187, 0);
@ -134,7 +126,7 @@ void label_img::showImage()
drawFocusedObjectBox(painter, Qt::magenta, penThick); drawFocusedObjectBox(painter, Qt::magenta, penThick);
drawObjectBoxes(painter, penThick); drawObjectBoxes(painter, penThick);
this->setPixmap(QPixmap::fromImage(m_inputImg)); this->setPixmap(QPixmap::fromImage(imageOnUi));
} }
void label_img::loadLabelData(const QString& labelFilePath) void label_img::loadLabelData(const QString& labelFilePath)
@ -153,22 +145,21 @@ void label_img::loadLabelData(const QString& labelFilePath)
{ {
try { try {
ObjectLabelingBox objBox; ObjectLabelingBox objBox;
objBox.label = static_cast<int>(inputFileValues.at(i)); objBox.label = static_cast<int>(inputFileValues.at(i));
double midX = inputFileValues.at(i + 1) * m_inputImg.width(); double midX = inputFileValues.at(i + 1);
double midY = inputFileValues.at(i + 2) * m_inputImg.height(); double midY = inputFileValues.at(i + 2);
double width = inputFileValues.at(i + 3) * m_inputImg.width(); double width = inputFileValues.at(i + 3);
double height = inputFileValues.at(i + 4) * m_inputImg.height(); double height = inputFileValues.at(i + 4);
double leftX = midX - width/2.;
double topY = midY - height/2.;
std::cout << "midX: " << midX << std::endl; objBox.box.setX(leftX); // translation: midX -> leftX
std::cout << "midX: " << midY << std::endl; objBox.box.setY(topY); // translation: midY -> topY
objBox.box.setWidth(width);
objBox.box.setHeight(height);
objBox.box.setX(static_cast<int>(midX - width/2 + 0.5));
objBox.box.setY(static_cast<int>(midY - height/2 + 0.5));
objBox.box.setWidth(static_cast<int>(width + 0.5));
objBox.box.setHeight(static_cast<int>(height + 0.5));
m_objBoundingBoxes.push_back(objBox); m_objBoundingBoxes.push_back(objBox);
} }
@ -189,9 +180,14 @@ void label_img::setFocusObjectName(QString qstrName)
m_foucsedObjectName = qstrName; m_foucsedObjectName = qstrName;
} }
QImage label_img::crop(QRect rect)
{
return m_inputImg.copy(rect);
}
void label_img::drawCrossLine(QPainter& painter, QColor color, int thickWidth) void label_img::drawCrossLine(QPainter& painter, QColor color, int thickWidth)
{ {
if(m_mouse_pos_in_image_coordinate == QPoint()) return; if(m_relative_mouse_pos_in_ui == QPointF()) return;
QPen pen; QPen pen;
pen.setWidth(thickWidth); pen.setWidth(thickWidth);
@ -199,9 +195,12 @@ void label_img::drawCrossLine(QPainter& painter, QColor color, int thickWidth)
pen.setColor(color); pen.setColor(color);
painter.setPen(pen); painter.setPen(pen);
QPoint absolutePoint = cvtRelativeToAbsolutePoint(m_relative_mouse_pos_in_ui);
std::cout <<"absolutePoint.x() = "<< absolutePoint.x() << std::endl;
//draw cross line //draw cross line
painter.drawLine(QPoint(m_mouse_pos_in_image_coordinate.x(),0), QPoint(m_mouse_pos_in_image_coordinate.x(),m_inputImg.height() - 1)); painter.drawLine(QPoint(absolutePoint.x(),0), QPoint(absolutePoint.x(), this->height() - 1));
painter.drawLine(QPoint(0,m_mouse_pos_in_image_coordinate.y()), QPoint(m_inputImg.width() - 1, m_mouse_pos_in_image_coordinate.y())); painter.drawLine(QPoint(0,absolutePoint.y()), QPoint(this->width() - 1, absolutePoint.y()));
std::cout << "draw Cross Line" << std::endl; std::cout << "draw Cross Line" << std::endl;
} }
@ -215,7 +214,13 @@ void label_img::drawFocusedObjectBox(QPainter& painter, Qt::GlobalColor color, i
pen.setColor(color); pen.setColor(color);
painter.setPen(pen); painter.setPen(pen);
painter.drawRect(QRect(m_leftButtonClickedPoint, m_mouse_pos_in_image_coordinate));
//relative coord to absolute coord
QPoint absolutePoint1 = cvtRelativeToAbsolutePoint(m_relatvie_mouse_pos_LBtnClicked_in_ui);
QPoint absolutePoint2 = cvtRelativeToAbsolutePoint(m_relative_mouse_pos_in_ui);
painter.drawRect(QRect(absolutePoint1, absolutePoint2));
} }
} }
@ -229,18 +234,18 @@ void label_img::drawObjectBoxes(QPainter& painter, int thickWidth)
pen.setColor(m_drawObjectBoxColor.at(boundingbox.label)); pen.setColor(m_drawObjectBoxColor.at(boundingbox.label));
painter.setPen(pen); painter.setPen(pen);
painter.drawRect(boundingbox.box); painter.drawRect(cvtRelativeToAbsoluteRectInUi(boundingbox.box));
} }
} }
void label_img::removeFocusedObjectBox(QPoint point) void label_img::removeFocusedObjectBox(QPointF point)
{ {
int removeBoxIdx = -1; int removeBoxIdx = -1;
double nearestBoxDistance = 99999999999999.; double nearestBoxDistance = 99999999999999.;
for(int i = 0; i < m_objBoundingBoxes.size(); i++) for(int i = 0; i < m_objBoundingBoxes.size(); i++)
{ {
QRect objBox = m_objBoundingBoxes.at(i).box; QRectF objBox = m_objBoundingBoxes.at(i).box;
if(objBox.contains(point)) if(objBox.contains(point))
{ {
@ -259,7 +264,7 @@ void label_img::removeFocusedObjectBox(QPoint point)
} }
} }
QRect label_img::getRectFromTwoPoints(QPoint p1, QPoint p2) QRect label_img::getAbsoluteRectFromTwoPoints(QPoint p1, QPoint p2)
{ {
int midX = (p1.x() + p2.x()) / 2; int midX = (p1.x() + p2.x()) / 2;
int midY = (p1.y() + p2.y()) / 2; int midY = (p1.y() + p2.y()) / 2;
@ -271,3 +276,42 @@ QRect label_img::getRectFromTwoPoints(QPoint p1, QPoint p2)
return QRect(topLeftPoint, bottomRightPoint); return QRect(topLeftPoint, bottomRightPoint);
} }
QRectF label_img::getRelativeRectFromTwoPoints(QPointF p1, QPointF p2)
{
double midX = (p1.x() + p2.x()) / 2.;
double midY = (p1.y() + p2.y()) / 2.;
double width = fabs(p1.x() - p2.x());
double height = fabs(p1.y() - p2.y());
QPointF topLeftPoint(midX - width/2., midY - height/2.);
QPointF bottomRightPoint(midX + width/2., midY + height/2.);
return QRectF(topLeftPoint, bottomRightPoint);
}
QRect label_img::cvtRelativeToAbsoluteRectInUi(QRectF rectF)
{
return QRect(static_cast<int>(rectF.x() * this->width() + 0.5),
static_cast<int>(rectF.y() * this->height()+ 0.5),
static_cast<int>(rectF.width() * this->width()+ 0.5),
static_cast<int>(rectF.height()* this->height()+ 0.5));
}
QRect label_img::cvtRelativeToAbsoluteRectInImage(QRectF rectF)
{
return QRect(static_cast<int>(rectF.x() * m_inputImg.width()),
static_cast<int>(rectF.y() * m_inputImg.height()),
static_cast<int>(rectF.width() * m_inputImg.width()),
static_cast<int>(rectF.height()* m_inputImg.height()));
}
QPoint label_img::cvtRelativeToAbsolutePoint(QPointF p)
{
return QPoint(static_cast<int>(p.x() * this->width() + 0.5), static_cast<int>(p.y() * this->height() + 0.5));
}
QPointF label_img::cvtAbsoluteToRelativePoint(QPoint p)
{
return QPointF(static_cast<double>(p.x()) / this->width(), static_cast<double>(p.y()) / this->height());
}

29
label_img.h
View File

@ -11,7 +11,7 @@
struct ObjectLabelingBox struct ObjectLabelingBox
{ {
int label; int label;
QRect box; QRectF box;
}; };
class label_img : public QLabel class label_img : public QLabel
@ -24,11 +24,6 @@ public:
void mousePressEvent(QMouseEvent *ev); void mousePressEvent(QMouseEvent *ev);
void mouseReleaseEvent(QMouseEvent *ev); void mouseReleaseEvent(QMouseEvent *ev);
QImage m_inputImg;
QImage m_inputImgCopy;//for drawing
QPoint m_mouse_pos_in_image_coordinate;
QVector<QColor> m_drawObjectBoxColor; QVector<QColor> m_drawObjectBoxColor;
int m_uiX; int m_uiX;
@ -51,6 +46,17 @@ public:
void setFocusObjectLabel(int); void setFocusObjectLabel(int);
void setFocusObjectName(QString); void setFocusObjectName(QString);
QImage crop(QRect);
QRect getAbsoluteRectFromTwoPoints(QPoint , QPoint);
QRectF getRelativeRectFromTwoPoints(QPointF , QPointF);
QRect cvtRelativeToAbsoluteRectInUi(QRectF);
QRect cvtRelativeToAbsoluteRectInImage(QRectF);
QPoint cvtRelativeToAbsolutePoint(QPointF);
QPointF cvtAbsoluteToRelativePoint(QPoint);
signals: signals:
void Mouse_Moved(); void Mouse_Moved();
void Mouse_Pressed(); void Mouse_Pressed();
@ -63,7 +69,10 @@ private:
double m_aspectRatioWidth; double m_aspectRatioWidth;
double m_aspectRatioHeight; double m_aspectRatioHeight;
QPoint m_leftButtonClickedPoint; QImage m_inputImg;
QPointF m_relative_mouse_pos_in_ui;
QPointF m_relatvie_mouse_pos_LBtnClicked_in_ui;
void setMousePosition(int , int); void setMousePosition(int , int);
@ -71,11 +80,7 @@ private:
void drawFocusedObjectBox(QPainter& , Qt::GlobalColor , int thickWidth = 3); void drawFocusedObjectBox(QPainter& , Qt::GlobalColor , int thickWidth = 3);
void drawObjectBoxes(QPainter& , int thickWidth = 3); void drawObjectBoxes(QPainter& , int thickWidth = 3);
void removeFocusedObjectBox(QPoint); void removeFocusedObjectBox(QPointF);
QRect getRectFromTwoPoints(QPoint , QPoint);
}; };
#endif // LABEL_IMG_H #endif // LABEL_IMG_H

22
mainwindow.cpp
View File

@ -169,19 +169,22 @@ void MainWindow::save_label_data()const
if(ui->checkBox_cropping->isChecked()) if(ui->checkBox_cropping->isChecked())
{ {
QImage cropped = ui->label_image->m_inputImgCopy.copy(objBox.box); QImage cropped = ui->label_image->crop(ui->label_image->cvtRelativeToAbsoluteRectInImage(objBox.box));
string strImgFile = m_fileList.at(m_fileIndex).toStdString(); if(!cropped.isNull())
strImgFile = strImgFile.substr( strImgFile.find_last_of('/') + 1, {
strImgFile.find_last_of('.') - strImgFile.find_last_of('/') - 1); string strImgFile = m_fileList.at(m_fileIndex).toStdString();
strImgFile = strImgFile.substr( strImgFile.find_last_of('/') + 1,
strImgFile.find_last_of('.') - strImgFile.find_last_of('/') - 1);
cropped.save(QString().fromStdString(strImgFile) + "_cropped_" + QString::number(i) + ".png"); cropped.save(QString().fromStdString(strImgFile) + "_cropped_" + QString::number(i) + ".png");
}
} }
double midX = static_cast<double>(objBox.box.x() + objBox.box.width() / 2.) / ui->label_image->m_inputImg.width(); double midX = objBox.box.x() + objBox.box.width() / 2.;
double midY = static_cast<double>(objBox.box.y() + objBox.box.height() / 2.) / ui->label_image->m_inputImg.height(); double midY = objBox.box.y() + objBox.box.height() / 2.;
double width = static_cast<double>(objBox.box.width()) / ui->label_image->m_inputImg.width(); double width = objBox.box.width();
double height = static_cast<double>(objBox.box.height()) / ui->label_image->m_inputImg.height(); double height = objBox.box.height();
fileOutputLabelData << objBox.label; fileOutputLabelData << objBox.label;
fileOutputLabelData << " "; fileOutputLabelData << " ";
@ -227,6 +230,7 @@ void MainWindow::load_label_list_data(QString qstrLabelListFile)
ui->tableWidget_label->removeRow(ui->tableWidget_label->currentRow()); ui->tableWidget_label->removeRow(ui->tableWidget_label->currentRow());
m_labelNameList.clear(); m_labelNameList.clear();
ui->label_image->m_drawObjectBoxColor.clear(); ui->label_image->m_drawObjectBoxColor.clear();
string strLabel; string strLabel;