cpp/ja/highgui_8hpp_source.html

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#ifndef OPENCV_HIGHGUI_HPP


#define OPENCV_HIGHGUI_HPP


#include "opencv2/core.hpp"


#ifdef HAVE_OPENCV_IMGCODECS


#include "opencv2/imgcodecs.hpp"


#endif


#ifdef HAVE_OPENCV_VIDEOIO


#include "opencv2/videoio.hpp"


#endif


namespace

cv


{


enum
WindowFlags
{


WINDOW_NORMAL
= 0x00000000,


WINDOW_AUTOSIZE
= 0x00000001,


WINDOW_OPENGL
= 0x00001000,


WINDOW_FULLSCREEN
= 1,


WINDOW_FREERATIO
= 0x00000100,


WINDOW_KEEPRATIO
= 0x00000000,


WINDOW_GUI_EXPANDED=0x00000000,


WINDOW_GUI_NORMAL
= 0x00000010,


};


enum
WindowPropertyFlags
{


WND_PROP_FULLSCREEN
= 0,


WND_PROP_AUTOSIZE
= 1,


WND_PROP_ASPECT_RATIO
= 2,


WND_PROP_OPENGL
= 3,


WND_PROP_VISIBLE
= 4,


WND_PROP_TOPMOST
= 5,


WND_PROP_VSYNC
= 6


};


enum
MouseEventTypes
{


EVENT_MOUSEMOVE
= 0,


EVENT_LBUTTONDOWN
= 1,


EVENT_RBUTTONDOWN
= 2,


EVENT_MBUTTONDOWN
= 3,


EVENT_LBUTTONUP
= 4,


EVENT_RBUTTONUP
= 5,


EVENT_MBUTTONUP
= 6,


EVENT_LBUTTONDBLCLK
= 7,


EVENT_RBUTTONDBLCLK
= 8,


EVENT_MBUTTONDBLCLK
= 9,


EVENT_MOUSEWHEEL
= 10,


EVENT_MOUSEHWHEEL
= 11


};


enum
MouseEventFlags
{


EVENT_FLAG_LBUTTON
= 1,


EVENT_FLAG_RBUTTON
= 2,


EVENT_FLAG_MBUTTON
= 4,


EVENT_FLAG_CTRLKEY
= 8,


EVENT_FLAG_SHIFTKEY
= 16,


EVENT_FLAG_ALTKEY
= 32


};


enum
QtFontWeights
{


QT_FONT_LIGHT
= 25,


QT_FONT_NORMAL
= 50,


QT_FONT_DEMIBOLD
= 63,


QT_FONT_BOLD
= 75,


QT_FONT_BLACK
= 87


};


enum
QtFontStyles
{


QT_STYLE_NORMAL
= 0,


QT_STYLE_ITALIC
= 1,


QT_STYLE_OBLIQUE
= 2


};


enum
QtButtonTypes
{


QT_PUSH_BUTTON
= 0,


QT_CHECKBOX
= 1,


QT_RADIOBOX
= 2,


QT_NEW_BUTTONBAR
= 1024


};


typedef
void (*MouseCallback)(int
event,
int
x,
int
y,
int
flags,
void* userdata);


typedef
void (*TrackbarCallback)(int
pos,
void* userdata);


typedef
void (*OpenGlDrawCallback)(void* userdata);


typedef
void (*ButtonCallback)(int
state,
void* userdata);


CV_EXPORTS_W
void
namedWindow(const
String& winname,
int
flags =
WINDOW_AUTOSIZE);


CV_EXPORTS_W
void
destroyWindow(const
String& winname);


CV_EXPORTS_W
void
destroyAllWindows();


CV_EXPORTS_W
int
startWindowThread();


CV_EXPORTS_W
int
waitKeyEx(int
delay = 0);


CV_EXPORTS_W
int
waitKey(int
delay = 0);


CV_EXPORTS_W
int
pollKey();


CV_EXPORTS_W
void
imshow(const
String& winname, InputArray mat);


CV_EXPORTS_W
void
resizeWindow(const
String& winname,
int
width,
int
height);


CV_EXPORTS_W
void
resizeWindow(const
String& winname,
const
cv::Size& size);


CV_EXPORTS_W
void
moveWindow(const
String& winname,
int
x,
int
y);


CV_EXPORTS_W
void
setWindowProperty(const
String& winname,
int
prop_id,
double
prop_value);


CV_EXPORTS_W
void
setWindowTitle(const
String& winname,
const
String& title);


CV_EXPORTS_W
double
getWindowProperty(const
String& winname,
int
prop_id);


CV_EXPORTS_W
Rect
getWindowImageRect(const
String& winname);


CV_EXPORTS
void
setMouseCallback(const
String& winname,
MouseCallback
onMouse,
void* userdata = 0);


CV_EXPORTS
int
getMouseWheelDelta(int
flags);


CV_EXPORTS_W
Rect
selectROI(const
String& windowName, InputArray img,
bool
showCrosshair =
true,
bool
fromCenter =
false);


CV_EXPORTS_W
Rect
selectROI(InputArray img,
bool
showCrosshair =
true,
bool
fromCenter =
false);


CV_EXPORTS_W
void
selectROIs(const
String& windowName, InputArray img,


CV_OUT std::vector<Rect>& boundingBoxes,
bool
showCrosshair =
true,
bool
fromCenter =
false);


CV_EXPORTS
int
createTrackbar(const
String& trackbarname,
const
String& winname,


int* value,
int
count,


TrackbarCallback
onChange = 0,


void* userdata = 0);


CV_EXPORTS_W
int
getTrackbarPos(const
String& trackbarname,
const
String& winname);


CV_EXPORTS_W
void
setTrackbarPos(const
String& trackbarname,
const
String& winname,
int
pos);


CV_EXPORTS_W
void
setTrackbarMax(const
String& trackbarname,
const
String& winname,
int
maxval);


CV_EXPORTS_W
void
setTrackbarMin(const
String& trackbarname,
const
String& winname,
int
minval);


CV_EXPORTS
void
imshow(const
String& winname,
const
ogl::Texture2D& tex);


CV_EXPORTS
void
setOpenGlDrawCallback(const
String& winname,
OpenGlDrawCallback
onOpenGlDraw,
void* userdata = 0);


CV_EXPORTS
void
setOpenGlContext(const
String& winname);


CV_EXPORTS
void
updateWindow(const
String& winname);


struct

QtFont


{


const
char*
nameFont;


Scalar
color;


int
font_face;


const
int*
ascii;


const
int*  greek;


const
int*  cyrillic;


float
hscale, vscale;


float
shear;


int
thickness;


float
dx;


int
line_type;


};


CV_EXPORTS
QtFont
fontQt(const
String& nameFont,
int
pointSize = -1,


Scalar
color =
Scalar::all(0),
int
weight =
QT_FONT_NORMAL,


int
style =
QT_STYLE_NORMAL,
int
spacing = 0);


CV_EXPORTS
void
addText(
const
Mat& img,
const
String& text,
Point
org,
const
QtFont& font);


CV_EXPORTS_W
void
addText(const
Mat& img,
const
String& text,
Point
org,
const
String& nameFont,
int
pointSize = -1,
Scalar
color =
Scalar::all(0),


int
weight =
QT_FONT_NORMAL,
int
style =
QT_STYLE_NORMAL,
int
spacing = 0);


CV_EXPORTS_W
void
displayOverlay(const
String& winname,
const
String& text,
int
delayms = 0);


CV_EXPORTS_W
void
displayStatusBar(const
String& winname,
const
String& text,
int
delayms = 0);


CV_EXPORTS
void
saveWindowParameters(const
String& windowName);


CV_EXPORTS
void
loadWindowParameters(const
String& windowName);


CV_EXPORTS
int
startLoop(int
(*pt2Func)(int
argc,
char
*argv[]),
int
argc,
char* argv[]);


CV_EXPORTS
void
stopLoop();


CV_EXPORTS
int
createButton(
const
String& bar_name,
ButtonCallback
on_change,


void* userdata = 0,
int
type =
QT_PUSH_BUTTON,


bool
initial_button_state =
false);


}
// cv


#endif


cv::Mat

n-dimensional dense array class


Definition:
mat.hpp:802


cv::Point_< int >


cv::Rect_

Template class for 2D rectangles


Definition:
core/types.hpp:421


cv::Scalar_< double >


cv::Scalar_< double >::all

static Scalar_< double > all(double v0)

returns a scalar with all elements set to v0


cv::Size_

Template class for specifying the size of an image or rectangle.


Definition:
core/types.hpp:316


cv::ogl::Texture2D

Smart pointer for OpenGL 2D texture memory with reference counting.


Definition:
opengl.hpp:284


cv::setOpenGlContext

CV_EXPORTS void setOpenGlContext(const String &winname)

Sets the specified window as current OpenGL context.


cv::setOpenGlDrawCallback

CV_EXPORTS void setOpenGlDrawCallback(const String &winname, OpenGlDrawCallback onOpenGlDraw, void *userdata=0)

Sets a callback function to be called to draw on top of displayed image.


cv::updateWindow

CV_EXPORTS void updateWindow(const String &winname)

Force window to redraw its context and call draw callback ( See cv::setOpenGlDrawCallback ).


cv::createButton

CV_EXPORTS int createButton(const String &bar_name, ButtonCallback on_change, void *userdata=0, int type=QT_PUSH_BUTTON, bool initial_button_state=false)

Attaches a button to the control panel.


cv::saveWindowParameters

CV_EXPORTS void saveWindowParameters(const String &windowName)

Saves parameters of the specified window.


cv::displayOverlay

CV_EXPORTS_W void displayOverlay(const String &winname, const String &text, int delayms=0)

Displays a text on a window image as an overlay for a specified duration.


cv::fontQt

CV_EXPORTS QtFont fontQt(const String &nameFont, int pointSize=-1, Scalar color=Scalar::all(0), int weight=QT_FONT_NORMAL, int style=QT_STYLE_NORMAL, int spacing=0)

Creates the font to draw a text on an image.


cv::QtFontStyles

QtFontStyles

Qt font style


Definition:
highgui.hpp:250


cv::addText

CV_EXPORTS void addText(const Mat &img, const String &text, Point org, const QtFont &font)

Draws a text on the image.


cv::displayStatusBar

CV_EXPORTS_W void displayStatusBar(const String &winname, const String &text, int delayms=0)

Displays a text on the window statusbar during the specified period of time.


cv::QtFontWeights

QtFontWeights

Qt font weight


Definition:
highgui.hpp:241


cv::QtButtonTypes

QtButtonTypes

Qt "button" type


Definition:
highgui.hpp:257


cv::loadWindowParameters

CV_EXPORTS void loadWindowParameters(const String &windowName)

Loads parameters of the specified window.


cv::QT_STYLE_OBLIQUE

@ QT_STYLE_OBLIQUE

Oblique font.


Definition:
highgui.hpp:253


cv::QT_STYLE_NORMAL

@ QT_STYLE_NORMAL

Normal font.


Definition:
highgui.hpp:251


cv::QT_STYLE_ITALIC

@ QT_STYLE_ITALIC

Italic font.


Definition:
highgui.hpp:252


cv::QT_FONT_LIGHT

@ QT_FONT_LIGHT

Weight of 25


Definition:
highgui.hpp:242


cv::QT_FONT_DEMIBOLD

@ QT_FONT_DEMIBOLD

Weight of 63


Definition:
highgui.hpp:244


cv::QT_FONT_NORMAL

@ QT_FONT_NORMAL

Weight of 50


Definition:
highgui.hpp:243


cv::QT_FONT_BLACK

@ QT_FONT_BLACK

Weight of 87


Definition:
highgui.hpp:246


cv::QT_FONT_BOLD

@ QT_FONT_BOLD

Weight of 75


Definition:
highgui.hpp:245


cv::QT_CHECKBOX

@ QT_CHECKBOX

Checkbox button.


Definition:
highgui.hpp:259


cv::QT_RADIOBOX

@ QT_RADIOBOX

Radiobox button.


Definition:
highgui.hpp:260


cv::QT_PUSH_BUTTON

@ QT_PUSH_BUTTON

Push button.


Definition:
highgui.hpp:258


cv::QT_NEW_BUTTONBAR

@ QT_NEW_BUTTONBAR

Button should create a new buttonbar


Definition:
highgui.hpp:261


cv::MouseEventTypes

MouseEventTypes

Mouse Events see cv::MouseCallback


Definition:
highgui.hpp:210


cv::MouseEventFlags

MouseEventFlags

Mouse Event Flags see cv::MouseCallback


Definition:
highgui.hpp:226


cv::WindowFlags

WindowFlags

Flags for cv::namedWindow


Definition:
highgui.hpp:186


cv::WindowPropertyFlags

WindowPropertyFlags

Flags for cv::setWindowProperty / cv::getWindowProperty


Definition:
highgui.hpp:199


cv::EVENT_MBUTTONDOWN

@ EVENT_MBUTTONDOWN

indicates that the middle mouse button is pressed.


Definition:
highgui.hpp:214


cv::EVENT_RBUTTONDBLCLK

@ EVENT_RBUTTONDBLCLK

indicates that right mouse button is double clicked.


Definition:
highgui.hpp:219


cv::EVENT_MOUSEWHEEL

@ EVENT_MOUSEWHEEL

positive and negative values mean forward and backward scrolling, respectively.


Definition:
highgui.hpp:221


cv::EVENT_LBUTTONUP

@ EVENT_LBUTTONUP

indicates that left mouse button is released.


Definition:
highgui.hpp:215


cv::EVENT_MOUSEHWHEEL

@ EVENT_MOUSEHWHEEL

positive and negative values mean right and left scrolling, respectively.


Definition:
highgui.hpp:222


cv::EVENT_MOUSEMOVE

@ EVENT_MOUSEMOVE

indicates that the mouse pointer has moved over the window.


Definition:
highgui.hpp:211


cv::EVENT_RBUTTONDOWN

@ EVENT_RBUTTONDOWN

indicates that the right mouse button is pressed.


Definition:
highgui.hpp:213


cv::EVENT_RBUTTONUP

@ EVENT_RBUTTONUP

indicates that right mouse button is released.


Definition:
highgui.hpp:216


cv::EVENT_MBUTTONUP

@ EVENT_MBUTTONUP

indicates that middle mouse button is released.


Definition:
highgui.hpp:217


cv::EVENT_LBUTTONDOWN

@ EVENT_LBUTTONDOWN

indicates that the left mouse button is pressed.


Definition:
highgui.hpp:212


cv::EVENT_LBUTTONDBLCLK

@ EVENT_LBUTTONDBLCLK

indicates that left mouse button is double clicked.


Definition:
highgui.hpp:218


cv::EVENT_MBUTTONDBLCLK

@ EVENT_MBUTTONDBLCLK

indicates that middle mouse button is double clicked.


Definition:
highgui.hpp:220


cv::EVENT_FLAG_RBUTTON

@ EVENT_FLAG_RBUTTON

indicates that the right mouse button is down.


Definition:
highgui.hpp:228


cv::EVENT_FLAG_CTRLKEY

@ EVENT_FLAG_CTRLKEY

indicates that CTRL Key is pressed.


Definition:
highgui.hpp:230


cv::EVENT_FLAG_SHIFTKEY

@ EVENT_FLAG_SHIFTKEY

indicates that SHIFT Key is pressed.


Definition:
highgui.hpp:231


cv::EVENT_FLAG_MBUTTON

@ EVENT_FLAG_MBUTTON

indicates that the middle mouse button is down.


Definition:
highgui.hpp:229


cv::EVENT_FLAG_LBUTTON

@ EVENT_FLAG_LBUTTON

indicates that the left mouse button is down.


Definition:
highgui.hpp:227


cv::EVENT_FLAG_ALTKEY

@ EVENT_FLAG_ALTKEY

indicates that ALT Key is pressed.


Definition:
highgui.hpp:232


cv::WINDOW_FREERATIO

@ WINDOW_FREERATIO

the image expends as much as it can (no ratio constraint).


Definition:
highgui.hpp:192


cv::WINDOW_NORMAL

@ WINDOW_NORMAL

the user can resize the window (no constraint) / also use to switch a fullscreen window to a normal s...


Definition:
highgui.hpp:187


cv::WINDOW_OPENGL

@ WINDOW_OPENGL

window with opengl support.


Definition:
highgui.hpp:189


cv::WINDOW_GUI_NORMAL

@ WINDOW_GUI_NORMAL

old fashious way


Definition:
highgui.hpp:195


cv::WINDOW_FULLSCREEN

@ WINDOW_FULLSCREEN

change the window to fullscreen.


Definition:
highgui.hpp:191


cv::WINDOW_KEEPRATIO

@ WINDOW_KEEPRATIO

the ratio of the image is respected.


Definition:
highgui.hpp:193


cv::WINDOW_AUTOSIZE

@ WINDOW_AUTOSIZE

the user cannot resize the window, the size is constrainted by the image displayed.


Definition:
highgui.hpp:188


cv::WINDOW_GUI_EXPANDED

@ WINDOW_GUI_EXPANDED

status bar and tool bar


Definition:
highgui.hpp:194


cv::WND_PROP_VISIBLE

@ WND_PROP_VISIBLE

checks whether the window exists and is visible


Definition:
highgui.hpp:204


cv::WND_PROP_TOPMOST

@ WND_PROP_TOPMOST

property to toggle normal window being topmost or not


Definition:
highgui.hpp:205


cv::WND_PROP_OPENGL

@ WND_PROP_OPENGL

opengl support.


Definition:
highgui.hpp:203


cv::WND_PROP_FULLSCREEN

@ WND_PROP_FULLSCREEN

fullscreen property (can be WINDOW_NORMAL or WINDOW_FULLSCREEN).


Definition:
highgui.hpp:200


cv::WND_PROP_AUTOSIZE

@ WND_PROP_AUTOSIZE

autosize property (can be WINDOW_NORMAL or WINDOW_AUTOSIZE).


Definition:
highgui.hpp:201


cv::WND_PROP_ASPECT_RATIO

@ WND_PROP_ASPECT_RATIO

window's aspect ration (can be set to WINDOW_FREERATIO or WINDOW_KEEPRATIO).


Definition:
highgui.hpp:202


cv::WND_PROP_VSYNC

@ WND_PROP_VSYNC

enable or disable VSYNC (in OpenGL mode)


Definition:
highgui.hpp:206


cv::TrackbarCallback

void(* TrackbarCallback)(int pos, void *userdata)

Callback function for Trackbar see cv::createTrackbar


Definition:
highgui.hpp:279


cv::getWindowImageRect

CV_EXPORTS_W Rect getWindowImageRect(const String &winname)

Provides rectangle of image in the window.


cv::createTrackbar

CV_EXPORTS int createTrackbar(const String &trackbarname, const String &winname, int *value, int count, TrackbarCallback onChange=0, void *userdata=0)

Creates a trackbar and attaches it to the specified window.


cv::ButtonCallback

void(* ButtonCallback)(int state, void *userdata)

Callback function for a button created by cv::createButton


Definition:
highgui.hpp:290


cv::getWindowProperty

CV_EXPORTS_W double getWindowProperty(const String &winname, int prop_id)

Provides parameters of a window.


cv::selectROI

CV_EXPORTS_W Rect selectROI(const String &windowName, InputArray img, bool showCrosshair=true, bool fromCenter=false)

Allows users to select a ROI on the given image.


cv::setWindowTitle

CV_EXPORTS_W void setWindowTitle(const String &winname, const String &title)

Updates window title


cv::destroyAllWindows

CV_EXPORTS_W void destroyAllWindows()

Destroys all of the HighGUI windows.


cv::getMouseWheelDelta

CV_EXPORTS int getMouseWheelDelta(int flags)

Gets the mouse-wheel motion delta, when handling mouse-wheel events cv::EVENT_MOUSEWHEEL and cv::EVEN...


cv::setMouseCallback

CV_EXPORTS void setMouseCallback(const String &winname, MouseCallback onMouse, void *userdata=0)

Sets mouse handler for the specified window


cv::waitKey

CV_EXPORTS_W int waitKey(int delay=0)

Waits for a pressed key.


cv::moveWindow

CV_EXPORTS_W void moveWindow(const String &winname, int x, int y)

Moves the window to the specified position


cv::setTrackbarMax

CV_EXPORTS_W void setTrackbarMax(const String &trackbarname, const String &winname, int maxval)

Sets the trackbar maximum position.


cv::imshow

CV_EXPORTS_W void imshow(const String &winname, InputArray mat)

Displays an image in the specified window.


cv::pollKey

CV_EXPORTS_W int pollKey()

Polls for a pressed key.


cv::OpenGlDrawCallback

void(* OpenGlDrawCallback)(void *userdata)

Callback function defined to be called every frame. See cv::setOpenGlDrawCallback


Definition:
highgui.hpp:284


cv::waitKeyEx

CV_EXPORTS_W int waitKeyEx(int delay=0)

Similar to waitKey, but returns full key code.


cv::setTrackbarMin

CV_EXPORTS_W void setTrackbarMin(const String &trackbarname, const String &winname, int minval)

Sets the trackbar minimum position.


cv::destroyWindow

CV_EXPORTS_W void destroyWindow(const String &winname)

Destroys the specified window.


cv::resizeWindow

CV_EXPORTS_W void resizeWindow(const String &winname, int width, int height)

Resizes the window to the specified size


cv::getTrackbarPos

CV_EXPORTS_W int getTrackbarPos(const String &trackbarname, const String &winname)

Returns the trackbar position.


cv::MouseCallback

void(* MouseCallback)(int event, int x, int y, int flags, void *userdata)

Callback function for mouse events. see cv::setMouseCallback


Definition:
highgui.hpp:273


cv::setWindowProperty

CV_EXPORTS_W void setWindowProperty(const String &winname, int prop_id, double prop_value)

Changes parameters of a window dynamically.


cv::namedWindow

CV_EXPORTS_W void namedWindow(const String &winname, int flags=WINDOW_AUTOSIZE)

Creates a window.


cv::selectROIs

CV_EXPORTS_W void selectROIs(const String &windowName, InputArray img, CV_OUT std::vector< Rect > &boundingBoxes, bool showCrosshair=true, bool fromCenter=false)

Allows users to select multiple ROIs on the given image.


cv::setTrackbarPos

CV_EXPORTS_W void setTrackbarPos(const String &trackbarname, const String &winname, int pos)

Sets the trackbar position.


cv

"black box" representation of the file storage associated with a file on disk.


Definition:
aruco.hpp:75


cv::QtFont

QtFont available only for Qt. See cv::fontQt


Definition:
highgui.hpp:713


cv::QtFont::shear

float shear

slope coefficient: 0 - normal, >0 - italic


Definition:
highgui.hpp:721


cv::QtFont::line_type

int line_type

PointSize


Definition:
highgui.hpp:724


cv::QtFont::dx

float dx

horizontal interval between letters


Definition:
highgui.hpp:723


cv::QtFont::nameFont

const char * nameFont

Name of the font


Definition:
highgui.hpp:714


cv::QtFont::ascii

const int * ascii

font data and metrics


Definition:
highgui.hpp:717


cv::QtFont::thickness

int thickness

See cv::QtFontWeights


Definition:
highgui.hpp:722


cv::QtFont::color

Scalar color

Color of the font. Scalar(blue_component, green_component, red_component[, alpha_component])


Definition:
highgui.hpp:715


cv::QtFont::font_face

int font_face

See cv::QtFontStyles


Definition:
highgui.hpp:716