小编mef*_*mef的帖子

如何在matlab中将函数传递给另一个函数:

例如,假设此函数用作优化器:

    Function [returnValue]=optimizer(@myfunction)
    %function definition
    End

如何调用优化器函数来优化myfunction？

我使用opencv校准了我的单声道相机.现在我知道相机的内部矩阵和失真系数[K1,K2,P1,P2,K3,K4,K5,K6].假设相机位于[x,y,z]并且[Roll,Pitch,Yaw]旋转.当相机在地板上观看时,如何获得世界坐标中的每个像素[z = 0].

我使用以下代码编译一个C++应用程序:

Engine engine = new Engine();
engine.BinPath = @"C:\WINDOWS\Microsoft.NET\Framework\v4.0.30319";
BuildPropertyGroup group = new BuildPropertyGroup();
group.SetProperty("Configuration", "Debug");
engine.BuildEnabled = true;
FileLogger logger = new FileLogger();
logger.Parameters = @"logfile=C:\tmp\build.log";
engine.RegisterLogger(logger);
bool success = engine.BuildProjectFile(@"E:\sv_repos\Test\Test\VS2010\Test\Test\Test.vcxproj", new string[] { "Build" }, group);
engine.UnregisterAllLoggers();
if (success)
  MessageBox.Show("build!");

但我得到以下错误,任何想法将不胜感激.

建立开始2012/01/04 03:32:16ب.ظ.MSBUILD:错误MSB4014:由于内部故障,构建已中止.MSBUILD:错误MSB4014:System.InvalidCastException:无法将类型为"System.Xml.XmlComment"的对象强制转换为"System.Xml.XmlElement".MSBUILD:错误MSB4014:在Microsoft.Build.BuildEngine.Project.ProcessProjectChildren(XmlElement projectElement,String projectDirectoryLocation,Boolean importedProject)MSBUILD:错误MSB4014:在Microsoft.Build.BuildEngine.Project.ProcessImportElement(XmlElement importElement,String projectDirectoryLocation,Boolean importedProject) MSBUILD:错误MSB4014:在Microsoft.Build.BuildEngine.Project.ProcessProjectChildren(XmlElement projectElement,String projectDirectoryLocation,Boolean importedProject)MSBUILD:错误MSB4014:在Microsoft.Build.BuildEngine.Project.ProcessImportElement(XmlElement importElement,String projectDirectoryLocation,Boolean importedProject) MSBUILD:错误MSB4014:在Microsoft.Build.BuildEngine.Project.ProcessProjectChildren(XmlElement projectElement,String projectDirectoryLocation,Boolean importedProject)MSBUILD:错误MSB4014:在Microsoft.Build.BuildEngine.Project.ProcessMainProjectElement()MSBUILD:错误MSB4014:在Microsoft. Build.BuildEngin e.Project.RefreshProjectIfDirty()MSBUILD:错误MSB4014:在Microsoft.Build.BuildEngine.Project.InternalLoadFromXmlDocument(XmlDocument projectXml,ProjectLoadSettings projectLoadSettings)MSBUILD:错误MSB4014:在Microsoft.Build.BuildEngine.Project.Load(String projectFileName,BuildEventContext buildEventContext ,ProjectLoadSettings projectLoadSettings)MSBUILD:错误MSB4014:
在Microsoft.Build.BuildEngine.Engine.GetMatchingProject(Project existingProject,String projectFullPath,BuildPropertyGroup globalPropertiesToUse,String toolsVersion,String [] targetNames,BuildEventContext buildEventContext,Boolean toolsVersionPeekedFromProjectFile)MSBUILD:错误MSB4014:在Microsoft .Build.BuildEngine.Engine.BuildProjectFileInternal(BuildRequest …

我写了一个名为octed_string的类,没有析构函数,它运行良好但是它无法在函数中返回任何octed_string类型.

请看下面的代码并告诉我有什么问题.

当我删除析构函数它工作!(cout print 12)

任何人都可以帮忙吗？

class octed_string
{
private:
    uint8_t *value;
    size_t length;
    size_t allocated;
public:
    octed_string()//constructor
        :value(0),length(0),allocated(0)
    {

    }
    void copy(uint8_t *from, uint8_t *to)
    {
        for (size_t i = 0; i < length; i++)
            *to++ = *from++;
    }

    void allocate()
        {
            if (value == 0)
            {
                allocated = STACK_INITIAL_ALLOC;
                value = new uint8_t[allocated];
            }
            else
            {
                // We need to allocate more memory

                size_t new_allocated = allocated + STACK_CHUNK_ALLOC;
                uint8_t *new_value = new uint8_t[new_allocated];

                // Copy from old …

我有一个TTS程序（第三方），并且编写了使用该程序的ac＃应用程序。（键入我的应用程序，然后按一个按钮移动鼠标，然后单击“第三方”应用程序）。

我需要知道演讲是否结束。是否有关于如何确定是否从声卡播放声音的想法？

下面的代码显示睡眠(1)平均睡眠时间为2毫秒!

DateTime dt = DateTime.Now;
int i = 0;
long max = -1;
while (true)
{
    Stopwatch st=new Stopwatch();
    st.Restart();
    System.Threading.Thread.Sleep(1);
    long el = st.ElapsedMilliseconds;
    max = Math.Max(el, max);
    i++;

    double time = DateTime.Now.Subtract(dt).TotalMilliseconds;
    if (time >= 1000)
    {
        Console.WriteLine("Time =" + time);
        Console.WriteLine("i =" + i);
        Console.WriteLine("max ="+max);
        System.Threading.Thread.Sleep(200);
        i = 0;
        dt = DateTime.Now;
        max = -1;
    }
}

典型输出:

Time =1000.1553
i =495
max =5

有些人可以解释一下原因吗？我该如何解决这个问题？!