[英]Java implementation of Opencv (3.0.0) template matching
I want to match a template (small image) in a given picture using Opencv. 我想使用Opencv匹配给定图片中的模板(小图像)。
I found the following code from this port: OpenCV Template Matching example in Android 我从这个端口找到了以下代码: Android中的OpenCV模板匹配示例
The problem is starting openvc 3.0.0, highgui is broken down into new videoio and imgcodecs and the code below is using highgui. 问题是启动openvc 3.0.0,highgui分解为新的videoio和imgcodecs,下面的代码使用的是highgui。
package opencv;
import org.opencv.core.Core;
import org.opencv.core.Core.MinMaxLocResult;
import org.opencv.core.CvType;
import org.opencv.core.Mat;
import org.opencv.core.Point;
import org.opencv.core.Scalar;
import org.opencv.highgui.Highgui;
import org.opencv.imgproc.Imgproc;
class MatchingDemo {
public void run(String inFile, String templateFile, String outFile, int match_method) {
System.out.println("\nRunning Template Matching");
Mat img = Highgui.imread(inFile);
Mat templ = Highgui.imread(templateFile);
// / Create the result matrix
int result_cols = img.cols() - templ.cols() + 1;
int result_rows = img.rows() - templ.rows() + 1;
Mat result = new Mat(result_rows, result_cols, CvType.CV_32FC1);
// / Do the Matching and Normalize
Imgproc.matchTemplate(img, templ, result, match_method);
Core.normalize(result, result, 0, 1, Core.NORM_MINMAX, -1, new Mat());
// / Localizing the best match with minMaxLoc
MinMaxLocResult mmr = Core.minMaxLoc(result);
Point matchLoc;
if (match_method == Imgproc.TM_SQDIFF || match_method == Imgproc.TM_SQDIFF_NORMED) {
matchLoc = mmr.minLoc;
} else {
matchLoc = mmr.maxLoc;
}
// / Show me what you got
Core.rectangle(img, matchLoc, new Point(matchLoc.x + templ.cols(),
matchLoc.y + templ.rows()), new Scalar(0, 255, 0));
// Save the visualized detection.
System.out.println("Writing "+ outFile);
Highgui.imwrite(outFile, img);
}
}
public class TemplateMatching {
public static void main(String[] args) {
System.loadLibrary("opencv_java246");
new MatchingDemo().run(args[0], args[1], args[2], Imgproc.TM_CCOEFF);
}
}
Read-write functions were moved from org.opencv.highgui.Highgui
to org.opencv.imgcodecs.Imgcodecs
. 读写函数已从
org.opencv.highgui.Highgui
移至org.opencv.imgcodecs.Imgcodecs
。 Drawing functions were moved from org.opencv.core.Core
to org.opencv.imgproc.Imgproc
. 绘图函数已从
org.opencv.core.Core
移至org.opencv.imgproc.Imgproc
。 So the source becomes: 所以来源变成:
import org.opencv.core.Core;
import org.opencv.core.Core.MinMaxLocResult;
import org.opencv.core.CvType;
import org.opencv.core.Mat;
import org.opencv.core.Point;
import org.opencv.core.Scalar;
import org.opencv.imgcodecs.Imgcodecs;
import org.opencv.imgproc.Imgproc;
class MatchingDemo {
public void run(String inFile, String templateFile, String outFile,
int match_method) {
System.out.println("\nRunning Template Matching");
Mat img = Imgcodecs.imread(inFile);
Mat templ = Imgcodecs.imread(templateFile);
// / Create the result matrix
int result_cols = img.cols() - templ.cols() + 1;
int result_rows = img.rows() - templ.rows() + 1;
Mat result = new Mat(result_rows, result_cols, CvType.CV_32FC1);
// / Do the Matching and Normalize
Imgproc.matchTemplate(img, templ, result, match_method);
Core.normalize(result, result, 0, 1, Core.NORM_MINMAX, -1, new Mat());
// / Localizing the best match with minMaxLoc
MinMaxLocResult mmr = Core.minMaxLoc(result);
Point matchLoc;
if (match_method == Imgproc.TM_SQDIFF
|| match_method == Imgproc.TM_SQDIFF_NORMED) {
matchLoc = mmr.minLoc;
} else {
matchLoc = mmr.maxLoc;
}
// / Show me what you got
Imgproc.rectangle(img, matchLoc, new Point(matchLoc.x + templ.cols(),
matchLoc.y + templ.rows()), new Scalar(0, 255, 0));
// Save the visualized detection.
System.out.println("Writing " + outFile);
Imgcodecs.imwrite(outFile, img);
}
}
public class TemplateMatching {
public static void main(String[] args) {
System.loadLibrary("opencv_java300");
new MatchingDemo().run(args[0], args[1], args[2], Imgproc.TM_CCOEFF);
}
}
OpenCV 3.0.0 doesn't have Highui anymore. OpenCV 3.0.0不再有Highui了。 Use Imgcodecs.imread instead.
请改用Imgcodecs.imread。
Follow this link. 点击此链接。
The import org.opencv.highgui cannot be resolved 导入org.opencv.highgui无法解析
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