在Windows上的OpenCV 1.1中扩展GUI功能的最简单方法? [英] Simplest way to extend GUI functionality in OpenCV 1.1 on Windows?

问题描述

我在C中有一个大型实时计算机视觉项目，其GUI使用的是OpenCV 1.1.内置的HighGUI库. 其他人指出，OpenCV GUI库非常有限.

I have a large real time computer vision project in C with a gui that uses OpenCV 1.1's built-in HighGUI library. As others have pointed out, the OpenCV GUI library is very limited.

我想制作一个滑动条(trackbar)GUI元素，例如cvCreateTrackbar，其值可以为负也可以为正. OpenCV当前仅将轨迹栏限制为正整数值.我不需要其他任何花哨的东西了，只是一个滑动条可以变成负数.

I'd like to make a slider bar (trackbar) GUI element like cvCreateTrackbar that can have values that go either negative or positive. OpenCV currently limits trackbars to positive integer values only. I don't need anything else fancy, just a sliderbar that can go negative.

获得正负滑动条的最简单方法是什么?

What is the easiest way to get a slider bar that goes positive and negative?

我在Windows XP上使用mingw和OpenCV 1.1.理想情况下，任何解决方案都应要求最低的依赖关系或库，并且应与Windows和mingw配合使用.

I am on Windows XP using mingw and OpenCV 1.1. Ideally any solution should require minimum dependencies or libraries, and should play nice with Windows and mingw.

推荐答案

您可以在进度条类周围编写包装程序，以将您的值标准化到进度条的范围.例如，如果您的范围是-5到5(含5和5)，请将该值加5，然后再将其发送到进度小部件. "+5"将范围从0调整为10.

You could write a wrapper around the progress bar class that normalizes your values to the range of the progress bar. For example, if your range is -5 to 5, inclusive, add 5 to the value before sending to the progress widget. The "+5" adjusts the range from 0 to 10.

您可能要考虑使用其他小部件，因为进度测量的最定义不会否定. (您的应用程序实际上是在取得负进度吗?)而且，大多数进度小部件都允许正增量，而不是绝对值.当应用程序运行时，它会向小部件添加增量.

You may want to consider using a different widget as most definitions of progress measurements don't go negative. (Is your application actually making negative progress?) Also, most progress widgets allow for a positive increment, different than an absolute value. As the application runs, it adds an increment to the widget.

那只是我的看法，我可能是错的." -丹尼斯·米勒.

"That's just my opinion, I could be wrong." -- Dennis Miller.

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