Package Summary

Backporting features from the 2.4.x.y series of opencv releases to indigo.

Maintainer status: maintained
Maintainer: Daniel Stonier <d.stonier AT gmail DOT com>
Author: Daniel Stonier
License: BSD

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Dependencies (5)

Package Summary

Backporting features from the 2.4.x.y series of opencv releases to indigo.

Maintainer status: maintained
Maintainer: Daniel Stonier <d.stonier AT gmail DOT com>
Author: Daniel Stonier
License: BSD

Contents

Overview
Usage
Examples

Overview

This package contains api extracted from 2.4.x/3.y.z versions of opencv that are not included in the system opencv released for indigo platforms.

parallelised thread support for qt imshows (i.e. call imshow related api safely from any thread)
zoomable imshow windows

Zoomable Imshows

Usage

The api has been namespaced in a separate namespace, cv_backports so as to avoid conflicts with the regular opencv api.

A full listing of the api can be found in each header. Only the commonly used ones are shown here.

cv_backports/imshow.hpp

   1 void imshow(const std::string& winname, cv::InputArray mat);
   2 void namedWindow(const std::string& winname, int flags = cv::WINDOW_AUTOSIZE);
   3 void destroyWindow(const std::string& winname);
   4 void destroyAllWindows();
   5 int waitKey(int delay = 0);
   6 void imshow(const std::string& winname, cv::InputArray mat);
   7 int startWindowThread();
   8 void resizeWindow(const std::string& winname, int width, int height);
   9 void moveWindow(const std::string& winname, int x, int y);
  10 void setWindowProperty(const std::string& winname, int prop_id, double prop_value);//YV
  11 double getWindowProperty(const std::string& winname, int prop_id);//YV
  12 typedef void (*MouseCallback)(int event, int x, int y, int flags, void* userdata);
  13 void setMouseCallback(const std::string& winname, MouseCallback onMouse, void* userdata = 0);
  14 CvFont fontQt(const std::string& nameFont, int pointSize=-1,
  15                          cv::Scalar color=cv::Scalar::all(0), int weight=CV_FONT_NORMAL,
  16                          int style=CV_STYLE_NORMAL, int spacing=0);
  17 void addText( const cv::Mat& img, const std::string& text, cv::Point org, CvFont font);

Examples

imshow

   1 #include <cv_backports/imshow.hpp>
   2 
   3 cv::Mat image;
   4 // ...load the image
   5 std::string name = "Depth Image";
   6 cv_backports::namedWindow(name, CV_WINDOW_KEEPRATIO);
   7 cv_backports::imshow(name, image);
   8 // eventually
   9 cv_backports::destroyWindow(name);