Opencv for android 模板匹配
因为有这方面的需要所以,对模板查找搜寻了相关资料,只是对于算法的东西很难看得动,特别是opencv涉及的很多的数学方法。
所以只为了实现这个功能,因为需求比较简单,在网上也搜寻到了相关代码,就直接拿来用了,这里也相当于转载一下:
代码上,亲测可以用的,效果也不错,确实将嘴巴给找出来了。
原文:http://www.itstrike.cn/Question/645ffff0-2862-46b6-a421-b76a37dfc660.html
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); } }
目标图像:
模板图像:
查找后图像: