Java 如何使用色差检测改进BRISK算法的最佳匹配结果?
我正在将BRISK应用到我的android应用程序中。代码是:Java 如何使用色差检测改进BRISK算法的最佳匹配结果?,java,android,opencv,image-processing,color-detection,Java,Android,Opencv,Image Processing,Color Detection,我正在将BRISK应用到我的android应用程序中。代码是: public boolean runBRISK(String filename1, String filename2) { BRISK detectorAndExtractor = BRISK.create(); final MatOfKeyPoint keyPointsLarge = new MatOfKeyPoint();
public boolean runBRISK(String filename1, String filename2)
{
BRISK detectorAndExtractor = BRISK.create();
final MatOfKeyPoint keyPointsLarge = new MatOfKeyPoint();
final MatOfKeyPoint keyPointsSmall = new MatOfKeyPoint();
Mat largeImage = Imgcodecs.imread(filename1, Imgcodecs.IMREAD_COLOR);
Mat smallImage = Imgcodecs.imread(filename2, Imgcodecs.IMREAD_COLOR);
detectorAndExtractor.detect(largeImage, keyPointsLarge);
detectorAndExtractor.detect(smallImage, keyPointsSmall);
//System.out.println("keyPoints.size() : "+keyPointsLarge.size());
//System.out.println("keyPoints2.size() : "+keyPointsSmall.size());
Mat descriptorsLarge = new Mat();
Mat descriptorsSmall = new Mat();
detectorAndExtractor.compute(largeImage, keyPointsLarge, descriptorsLarge);
detectorAndExtractor.compute(smallImage, keyPointsSmall, descriptorsSmall);
//System.out.println("descriptorsA.size() : "+descriptorsLarge.size());
//System.out.println("descriptorsB.size() : "+descriptorsSmall.size());
MatOfDMatch matches = new MatOfDMatch();
DescriptorMatcher matcher = DescriptorMatcher.create(DescriptorMatcher.BRUTEFORCE_HAMMINGLUT);
matcher.match(descriptorsLarge, descriptorsSmall, matches);
System.out.println("matches.size() : "+matches.size());
MatOfDMatch matchesFiltered = new MatOfDMatch();
List<DMatch> matchesList = matches.toList();
List<DMatch> bestMatches= new ArrayList<DMatch>();
Double max_dist = 0.0;
Double min_dist = 100.0;
for (int i = 0; i < matchesList.size(); i++)
{
Double dist = (double) matchesList.get(i).distance;
if (dist < min_dist && dist != 0)
{
min_dist = dist;
}
if (dist > max_dist)
{
max_dist = dist;
}
}
//System.out.println("max_dist : "+max_dist);
//System.out.println("min_dist : "+min_dist);
if(min_dist > 50 )
{
//System.out.println("No match found");
//System.out.println("Just return ");
return false;
}
double threshold = 3 * min_dist;
double threshold2 = 2 * min_dist;
if (threshold > 75)
{
threshold = 75;
}
else if (threshold2 >= max_dist)
{
threshold = min_dist * 1.1;
}
else if (threshold >= max_dist)
{
threshold = threshold2 * 1.4;
}
//System.out.println("Threshold : "+threshold);
for (int i = 0; i < matchesList.size(); i++)
{
Double dist = (double) matchesList.get(i).distance;
if (dist < threshold)
{
bestMatches.add(matches.toList().get(i));
//System.out.println(String.format(i + " best match added : %s", dist));
}
}
matchesFiltered.fromList(bestMatches);
System.out.println("matchesFiltered.size() : " + matchesFiltered.size());
if(matchesFiltered.rows() >= 1) //TODO >= 4
{
System.out.println("match found");
return true;
}
else
{
return false;
}
}
public boolean runBRISK(字符串filename1,字符串filename2)
{
BRISK detectorAndExtractor=BRISK.create();
最终MatOfKeyPoint关键点RGE=新MatOfKeyPoint();
最终MatOfKeyPoint keyPointsSmall=新MatOfKeyPoint();
Mat largeImage=Imgcodecs.imread(文件名1,Imgcodecs.imread\u颜色);
Mat smallImage=Imgcodecs.imread(文件名2,Imgcodecs.imread\u颜色);
Detector和Extractor.detect(大图像,关键点大);
Detector和Extractor.detect(小图像,关键点小);
//System.out.println(“keyPoints.size():”+keyPointsLarge.size());
//System.out.println(“keyPoints2.size():”+keyPointsSmall.size());
Mat描述符大=新Mat();
材料描述符小=新材料();
detector和extractor.compute(大图像、关键点大、描述符大);
detectorAndExtractor.compute(smallImage,keyPointsSmall,descriptorsmall);
//System.out.println(“descriptorrsa.size():”+descriptorsragle.size());
//System.out.println(“descriptorsB.size():”+descriptorsmall.size());
MatOfDMatch matches=新的MatOfDMatch();
DescriptorMatcher matcher=DescriptorMatcher.create(DescriptorMatcher.BRUTEFORCE_HAMMINGLUT);
matcher.match(描述符大,描述符小,匹配);
System.out.println(“matches.size():”+matches.size());
MatOfDMatch matchesFiltered=新的MatOfDMatch();
List matchesList=matches.toList();
List bestMatches=new ArrayList();
双最大距离=0.0;
双最小距离=100.0;
对于(int i=0;i最大距离)
{
最大距离=距离;
}
}
//系统输出打印项次(“最大距离:+最大距离”);
//系统输出打印项次(“最小距离:+最小距离”);
如果(最小距离>50)
{
//System.out.println(“未找到匹配项”);
//System.out.println(“刚刚返回”);
返回false;
}
双阈值=3*最小距离;
双阈值2=2*最小距离;
如果(阈值>75)
{
阈值=75;
}
否则如果(阈值2>=最大距离)
{
阈值=最小距离*1.1;
}
否则如果(阈值>=最大距离)
{
阈值=阈值2*1.4;
}
//System.out.println(“阈值:+阈值”);
对于(int i=0;i=1)//TODO>=4
{
System.out.println(“找到匹配项”);
返回true;
}
其他的
{
返回false;
}
}
以下是图片:
图像#1和#2几乎相同,唯一的区别是颜色
问题是,当将它们与图像0进行比较时,我得到99个与图像1的最佳匹配,86个与图像2的最佳匹配。但是,图像#0和#2与主对象具有相同的颜色(深紫色)
如何添加色差检测以改进特征匹配