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Since the Viz(Visualization Toolkit) is not included in official opencv package, you have to build it

Building VTK with Visual Studio

   

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http://support.advantech.com.tw/support/DownloadSRDetail_New.aspx?SR_ID=1-2AKUDB&Doc_Source=Download

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SQL Server 2017 Express Edition 下載

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1. MicroHttpServer - 用100行C#寫一個HTTP Server 示範寫一個簡單http server console application 下圖為瀏覽器顯示server端特定資料夾下的影像資訊 2. Simple HTTP Server in C#

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8路網絡繼電器 IP繼電器 Web Relay 雙控本地 手機 遠程控制 /安卓 蘋果 平板 windows系統 NT $1,500 一、功能(Feature)：     1. 以太網RJ45介面 。     2. 板載WEB伺服器，可通過web方式訪問並控制。

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How to make auto-adjustments(brightness and contrast) for image Android Opencv Image Correction

 1: /**

 2:  * \brief Automatic brightness and contrast optimization with optional histogram clipping

 3:  * \param [in]src Input image GRAY or BGR or BGRA

 4:  * \param [out]dst Destination image 

 5:  * \param clipHistPercent cut wings of histogram at given percent tipical=>1, 0=>Disabled

 6:  * \note In case of BGRA image, we won't touch the transparency

 7: */

 8: void BrightnessAndContrastAuto(const cv::Mat &src, cv::Mat &dst, float clipHistPercent=0)

 9: {

 10:  

 11: CV_Assert(clipHistPercent >= 0);

 12: CV_Assert((src.type() == CV_8UC1) || (src.type() == CV_8UC3) || (src.type() == CV_8UC4));

 13:  

 14: int histSize = 256;

 15: float alpha, beta;

 16: double minGray = 0, maxGray = 0;

 17:  

 18: //to calculate grayscale histogram

 19: cv::Mat gray;

 20: if (src.type() == CV_8UC1) gray = src;

 21: else if (src.type() == CV_8UC3) cvtColor(src, gray, CV_BGR2GRAY);

 22: else if (src.type() == CV_8UC4) cvtColor(src, gray, CV_BGRA2GRAY);

 23: if (clipHistPercent == 0)

 24: {

 25: // keep full available range

 26: cv::minMaxLoc(gray, &minGray, &maxGray);

 27: }

 28: else

 29: {

 30: cv::Mat hist; //the grayscale histogram

 31:  

 32: float range[] = { 0, 256 };

 33: const float* histRange = { range };

 34: bool uniform = true;

 35: bool accumulate = false;

 36: calcHist(&gray, 1, 0, cv::Mat (), hist, 1, &histSize, &histRange, uniform, accumulate);

 37:  

 38: // calculate cumulative distribution from the histogram

 39: std::vector<float> accumulator(histSize);

 40: accumulator[0] = hist.at<float>(0);

 41: for (int i = 1; i < histSize; i++)

 42: {

 43: accumulator[i] = accumulator[i - 1] + hist.at<float>(i);

 44: }

 45:  

 46: // locate points that cuts at required value

 47: float max = accumulator.back();

 48: clipHistPercent *= (max / 100.0); //make percent as absolute

 49: clipHistPercent /= 2.0; // left and right wings

 50: // locate left cut

 51: minGray = 0;

 52: while (accumulator[minGray] < clipHistPercent)

 53: minGray++;

 54:  

 55: // locate right cut

 56: maxGray = histSize - 1;

 57: while (accumulator[maxGray] >= (max - clipHistPercent))

 58: maxGray--;

 59: }

 60:  

 61: // current range

 62: float inputRange = maxGray ...

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Fill in the keyword: restsharp, and then click the installation button

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Given a set of connected points, where they are filled with red color. And we arrange these points in a rectangle and those blue points are down-sampled points of them. If we move one of blue points, how do we update those neighborhood of it? 1. first, find the neighborhood points that are close enough to pt1, in which their Eucliden distances to Pt1 should be less than ε 2. calculate the movement between Pt1 and Pt1’, and name it as D

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1. Add Mouse (0) to the list 2. Add Monitor (1) to the list 3. Create a peripheral (ph, 10), which group Mouse and Monitor together, and add to the list. 4. Add CPU (2) to the list

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To-do list: In this case, I am planing to put an image onto a RectROI object. The pixel size of the scenery image is not necessarily equal to that of a RectROI object. Instead the image size is variable and capable of adaptive to any size you set .

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Today I reveiewed Observer Pattern – Design Pattern (Using C#) and have finished watching Observer Design Pattern tutorial.
As usual, I implemented the example in C# instead of JAVA.

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What is the Visitor Design Pattern ? 1. Allows you to add methods to classes of different types without much altering to these classes. 2. You can make completely different methods depending on the class used.

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