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是否有适用于 Windows Phone 8 和 Windows 8 的 OpenCV 图形库的支持。我在 Google 上进行了搜索,但没有找到任何与 OpenCV 相关的资源来连接 Windows Phone 8 / Windows 8。如果你们中的任何人知道更多关于这个请帮助我,并提供一些链接到图书馆。

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3 回答 3

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这是我从 OpenCV 团队获得的最新信息。

OpenCV 开发团队正在为 Windows RT 开发端口。这是 WinRT 的当前开发分支(https://github.com/asmorkalov/opencv/tree/winrt)。您可以使用 Visual Studio Express for Windows 8 和 Platform SDK 为 ARM 构建它。

      Open Visual Studio development console.
      Setup environment for cross compilation by command "C:\Program Files(x86)\Microsoft
      Visual Studio 11.0\VC\bin\x86_arm\vcvarsx86_arm.bat"
      cd <opencv_source_dir>/platforms/winrt/
      run scripts/cmake_winrt.cmd
      run ninja

或者,您可以使用 nmake 代替 ninja。您需要编辑 cmake_winrt.cmd 并将项目生成器从 -GNinja 更改为 -G "NMake Makefiles"。现在只支持库的算法部分,没有 tbb,没有 UI,没有视频 IO。

请从以下给出的 URL 中查看更多详细信息。 http://answers.opencv.org/question/9847/opencv-for-windows-8-tablet/?answer=9851#post-id-9851

于 2013-03-22T06:28:15.493 回答
3

通过 windows-8,我猜你的意思是 winRT ?AFAIK,winRT 没有官方端口。例如,您需要将其编译为 Win8 Store DLL,以便您可以从 Win8 Store Application 中引用它。

直接从opencv-core开始,然后一一添加你需要的lib,因为所有组件都无法编译(比如opencv-highgui高度依赖Windows API,不完全兼容Win8 Store Apps )。

您还需要自己编写一些 OpenCV 使用的 Win32 方法,这些方法不能从 Win8 应用程序访问,例如 GetSystemInfo()、GetTempPathA()、GetTempFileNameA() 以及与线程本地存储 (TLS) 相关的所有方法。

通过将 opencv_core、opencv_imgproc 和 zlib 编译为 3 个单独的静态库,我已经能够在 WinRT 中使用一小部分 OpenCV。我已经添加了另一个,称为 opencv_winrt,它只包含以下两个文件:

opencv_winrt.h

#pragma once

#include "combaseapi.h"

void WINAPI GetSystemInfo(
    _Out_  LPSYSTEM_INFO lpSystemInfo
);

DWORD WINAPI GetTempPathA(
  _In_   DWORD nBufferLength,
  _Out_  char* lpBuffer
);
UINT WINAPI GetTempFileNameA(
  _In_   const char* lpPathName,
  _In_   const char* lpPrefixString,
  _In_   UINT uUnique,
  _Out_  char* lpTempFileName
);

DWORD WINAPI TlsAlloc();
BOOL WINAPI TlsFree(
    _In_ DWORD dwTlsIndex
);
LPVOID WINAPI TlsGetValue(
    _In_ DWORD dwTlsIndex
);
BOOL WINAPI TlsSetValue(
    _In_ DWORD dwTlsIndex, 
    _In_opt_ LPVOID lpTlsValue
);

void WINAPI TlsShutdown();

# define TLS_OUT_OF_INDEXES ((DWORD)0xFFFFFFFF)

opencv_winrt.cpp

#include "opencv_winrt.h"
#include <vector>
#include <set>
#include <mutex>
#include "assert.h"


void WINAPI GetSystemInfo(LPSYSTEM_INFO lpSystemInfo)
{
    GetNativeSystemInfo(lpSystemInfo);
}

DWORD WINAPI GetTempPathA(DWORD nBufferLength, char* lpBuffer)
{
    return 0;
}

UINT WINAPI GetTempFileNameA(const char* lpPathName, const char* lpPrefixString, UINT uUnique, char* lpTempFileName)
{
    return 0;
}


// Thread local storage.
typedef std::vector<void*> ThreadLocalData;

static __declspec(thread) ThreadLocalData* currentThreadData = nullptr;
static std::set<ThreadLocalData*> allThreadData;
static DWORD nextTlsIndex = 0;
static std::vector<DWORD> freeTlsIndices;
static std::mutex tlsAllocationLock;

DWORD WINAPI TlsAlloc()
{
    std::lock_guard<std::mutex> lock(tlsAllocationLock);

    // Can we reuse a previously freed TLS slot?
    if (!freeTlsIndices.empty())
    {
        DWORD result = freeTlsIndices.back();
        freeTlsIndices.pop_back();
        return result;
    }

    // Allocate a new TLS slot.
    return nextTlsIndex++;
}


_Use_decl_annotations_ BOOL WINAPI TlsFree(DWORD dwTlsIndex)
{
    std::lock_guard<std::mutex> lock(tlsAllocationLock);

    assert(dwTlsIndex < nextTlsIndex);
    assert(find(freeTlsIndices.begin(), freeTlsIndices.end(), dwTlsIndex) == freeTlsIndices.end());

    // Store this slot for reuse by TlsAlloc.
    try
    {
        freeTlsIndices.push_back(dwTlsIndex);
    }
    catch (...)
    {
        return false;
    }

    // Zero the value for all threads that might be using this now freed slot.
    for each (auto threadData in allThreadData)
    {
        if (threadData->size() > dwTlsIndex)
        {
            threadData->at(dwTlsIndex) = nullptr;
        }
    }

    return true;
}


_Use_decl_annotations_ LPVOID WINAPI TlsGetValue(DWORD dwTlsIndex)
{
    ThreadLocalData* threadData = currentThreadData;

    if (threadData && threadData->size() > dwTlsIndex)
    {
        // Return the value of an allocated TLS slot.
        return threadData->at(dwTlsIndex);
    }
    else
    {
        // Default value for unallocated slots.
        return nullptr;
    }
}


_Use_decl_annotations_ BOOL WINAPI TlsSetValue(DWORD dwTlsIndex, LPVOID lpTlsValue)
{
    ThreadLocalData* threadData = currentThreadData;

    if (!threadData)
    {
        // First time allocation of TLS data for this thread.
        try
        {
            threadData = new ThreadLocalData(dwTlsIndex + 1, nullptr);

            std::lock_guard<std::mutex> lock(tlsAllocationLock);

            allThreadData.insert(threadData);

            currentThreadData = threadData;
        }
        catch (...)
        {
            if (threadData)
                delete threadData;

            return false;
        }
    }
    else if (threadData->size() <= dwTlsIndex)
    {
        // This thread already has a TLS data block, but it must be expanded to fit the specified slot.
        try
        {
            std::lock_guard<std::mutex> lock(tlsAllocationLock);

            threadData->resize(dwTlsIndex + 1, nullptr);
        }
        catch (...)
        {
            return false;
        }
    }

    // Store the new value for this slot.
    threadData->at(dwTlsIndex) = lpTlsValue;

    return true;
}


// Called at thread exit to clean up TLS allocations.
void WINAPI TlsShutdown()
{
    ThreadLocalData* threadData = currentThreadData;

    if (threadData)
    {
        {
            std::lock_guard<std::mutex> lock(tlsAllocationLock);

            allThreadData.erase(threadData);
        }

        currentThreadData = nullptr;

        delete threadData;
    }
}

我修改了文件 cvconfig.h:我已经注释掉了每个#define,除了 PACKAGE* 和 VERSION,我在最后添加了#include "opencv_winrt.h"。

于 2013-02-28T10:42:11.277 回答
2

只是一个提示 - OpenCV 有一个名为EmguCV( http://www.emgu.com/wiki/index.php/Main_Page ) 的 C# 包装器,通过查看论坛帖子,我发现有一些活动可以在 Windows 上使用它8 但很难说它现在是否有效,因为声称问题的帖子已经很老了。我建议你试一试,看看这个 C# 包装器是否能够在 Windows Phone 8 上运行,我认为它绝对应该在 Windows 8 上运行。

于 2013-02-28T07:32:52.893 回答