原创 OpenCV Tutorials Optical Flow
Goal In this chapter, We will understand the concepts of optical flow and its estimation using Lucas-Kanade method. We
2020-02-22 03:44:10
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原创 Learn OpenCV Deep Learning based Text Detection Using OpenCV (C++/Python)
There is a common saying, “A picture is worth a thousand words“. In this post, we are going to take that literally and
2020-02-22 03:44:10
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原创 Learn OpenCV Gender & Age Classification using OpenCV Deep Learning ( C++/Python )
In this tutorial, we will discuss an interesting application of Deep Learning applied to faces. We will estimate the ag
2020-02-22 03:44:10
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原创 Learn OpenCV Video Stabilization Using Point Feature Matching in OpenCV
In this post, we will learn how to implement a simple Video Stabilizer using a technique called Point Feature Matching
2020-02-22 03:44:10
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原创 Windows CreateThread function
Creates a thread to execute within the virtual address space of the calling process. To create a thread that runs in th
2020-02-22 03:44:10
原创 Windows Using Mutex Objects
You can use a mutex object to protect a shared resource from simultaneous access by multiple threads or processes. Each
2020-02-22 03:44:10
原创 opencv中facedetect例子淺析
detectMultiScale函數詳解 cvHaarDetectObjects是opencv1中的函數，opencv2中人臉檢測使用的是 detectMultiScale函數。它可以檢測出圖片中所有的人臉，並將人臉用vector保
2020-02-22 03:44:10
原创 Windows Using Condition Variables
The following code implements a producer/consumer queue. The queue is represented as a bounded circular buffer, and is
2020-02-22 03:44:10
原创 OpenGL文字顯示
線貼一個簡單可用的opengl文字顯示調用函數 opengl文字顯示大致三步： 1，創建字體 2，輸出打印 3，刪除字體 1，創建字體的函數： /* * BuildFont * 創建位圖字體 */ GLvoid
2020-02-22 03:44:10
原创 OpenGL三維座標顯示
1、網格建立函數 void CMyStatic::GLGrid(coordpoint& pt1, coordpoint& pt2,int num) { const float _xLen = (pt2.x -pt1.x) / num
2020-02-22 03:44:10
原创 c++獲取屏幕大小
以下兩個函數獲取的是顯示屏幕的大小，不包括任務欄等區域 int screenwidth=GetSystemMetrics(SM_CXFULLSCREEN); int screenheight=GetSystemMetrics(SM_C
2020-02-22 03:44:10
原创 實現opengl截取窗口圖像到內存，然後用cv處理
目前想實現opengl截取窗口圖像到內存，然後用cv處理，所以需要用cv從內存把圖像再取出來。可是一直是灰色的，代碼稍作改動後會變成黑色加亂碼 直接
2020-02-22 03:44:10
原创 fstream讀到文件尾，如何返回文件頭
C++ I/O系統管理兩個與一個文件相聯繫的指針。一個是讀指針，它說明輸入操作在文件中的位置；另一個是寫指針，它下次寫操作的位置。每次執行輸入或輸出時，相應的指針自動變化。所以，C++的文件定位分爲讀位置和寫位置的定位，對應的成員函數是
2020-02-22 03:44:10
原创 Windows Using Semaphore Objects
The following example uses a semaphore object to limit the number of threads that can perform a particular task. First,
2020-02-22 03:44:10
原创 OpenGL場景截取後存儲（BMP圖片）
變量聲明部分 GLenum lastBuffer_OpenGLShot; GLbyte* pBits_OpenGLShot = 0; // 圖像數據 unsigned long ImageSize_OpenGLShot; in
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