How to make buttons in OpenCV 3.1 using cv2.createButton?

时间：2016-07-11 19:41:54

标签： python c++ opencv image-processing

I'm trying to add a button to my image processing script to save the high and low HSV values for my binary threshold.

According to the OpenCV 3.0 documentation here, OpenCV evidently has a function which does that.

I am writing the function like this
cv2.createButton('Button',f)
Where Button is the name of the button and f is the callback function (just an empty function)

However I keep on getting:-

AttributeError: 'module' object has no attribute 'createButton'

Apparently the same function works fine with C/C++ but it isn't working with python. Most probably because it isn't there for python (maybe) ?

How do I get around this problem?

4 个答案:

答案 0 :(得分：5)

文档说

  

轨迹栏的另一个重要应用是将其用作按钮或开关。默认情况下，OpenCV没有按钮功能。因此，您可以使用跟踪栏来获取此类功能（位于Trackbar as the Color Palette）。

有一个小例子如何将它用作按钮。

答案 1 :(得分：1)

[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  10.971 s
[INFO] Finished at: 2020-11-08T18:34:15-05:00
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.felix:maven-bundle-plugin:4.2.1:manifest (bundle-manifest) on project univocity-trader-core: Internal error in maven-bundle-plugin: ConcurrentModificationException -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.apache.felix:maven-bundle-plugin:4.2.1:manifest (bundle-manifest) on project univocity-trader-core: Internal error in maven-bundle-plugin
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:215)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:156)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:148)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:117)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:81)
    at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:56)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:128)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:305)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:957)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:289)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:193)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:64)
    at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:564)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:282)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:225)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:406)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:347)
Caused by: org.apache.maven.plugin.MojoExecutionException: Internal error in maven-bundle-plugin
    at org.apache.felix.bundleplugin.ManifestPlugin.execute (ManifestPlugin.java:134)
    at org.apache.felix.bundleplugin.BundlePlugin.execute (BundlePlugin.java:364)
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:137)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:210)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:156)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:148)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:117)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:81)
    at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:56)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:128)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:305)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:957)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:289)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:193)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:64)
    at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:564)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:282)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:225)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:406)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:347)
Caused by: java.util.ConcurrentModificationException
    at java.util.TreeMap.callMappingFunctionWithCheck (TreeMap.java:742)
    at java.util.TreeMap.computeIfAbsent (TreeMap.java:558)
    at aQute.bnd.osgi.Jar.putResource (Jar.java:288)
    at aQute.bnd.osgi.Jar$1.visitFile (Jar.java:202)
    at aQute.bnd.osgi.Jar$1.visitFile (Jar.java:177)
    at java.nio.file.Files.walkFileTree (Files.java:2804)
    at aQute.bnd.osgi.Jar.buildFromDirectory (Jar.java:176)
    at aQute.bnd.osgi.Jar.<init> (Jar.java:119)
    at aQute.bnd.osgi.Jar.<init> (Jar.java:172)
    at org.apache.felix.bundleplugin.BundlePlugin.getOSGiBuilder (BundlePlugin.java:604)
    at org.apache.felix.bundleplugin.ManifestPlugin.getAnalyzer (ManifestPlugin.java:285)
    at org.apache.felix.bundleplugin.ManifestPlugin.execute (ManifestPlugin.java:111)
    at org.apache.felix.bundleplugin.BundlePlugin.execute (BundlePlugin.java:364)
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:137)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:210)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:156)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:148)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:117)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:81)
    at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:56)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:128)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:305)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:957)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:289)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:193)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:64)
    at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:564)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:282)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:225)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:406)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:347)
[ERROR]

上面的代码显示了如何实现cv2.createButton（）方法。

注意：

  • “后退” =按钮上显示的文字
  • back =按下按钮时调用的函数
  • 必须在按钮之前创建cv2窗口
  • 如果您的按钮没有出现：在框架内单击，按ctrl + p或Command + p（对于Mac），按钮菜单应会出现

答案 2 :(得分：0)

我认为这是不可能的

    cv2.createButton('test', GeekObject, None , cv2.QT_PUSH_BUTTON, 0)

cv2.error：OpenCV（3.4.6）C：\ projects \ opencv-python \ opencv \ modules \ highgui \ src \ window.cpp：579：错误：（-213：未实现功能/功能）该库在功能'cv :: createButton'中编译时没有QT支持

答案 3 :(得分：0)

我正在寻找按钮被附加到 QT 窗口的控制面板的原因。我认为 CV2 主页的以下摘录会有所帮助

函数 createButton 将按钮附加到控制面板。每个按钮都添加到最后一个按钮右侧的按钮栏中。如果之前没有任何东西附加到控制面板，或者如果附加到控制面板的最后一个元素是一个轨迹栏，或者如果 QT_NEW_BUTTONBAR 标志被添加到类型中，则会创建一个新的按钮栏

open cv new qt functions page link

相关问题
最新问题