我有一张参考图片，我想围绕参考图片中存在的图片绘制一个圆圈。 现在，它在参考图片中存在的图片上绘制一个矩形，但我不知道如何使其成为圆形。在Matlab中识别的图像周围画一个圆圈

boxImage = imread('RefImg.jpg');

sceneImage = imread('full_image.jpg');

boxPoints = detectSURFFeatures(rgb2gray(boxImage));

scenePoints = detectSURFFeatures(rgb2gray(sceneImage));

[boxFeatures, boxPoints] = extractFeatures(rgb2gray(boxImage), boxPoints);

[sceneFeatures, scenePoints] = extractFeatures(rgb2gray(sceneImage), scenePoints);

boxPairs = matchFeatures(boxFeatures, sceneFeatures);

matchedBoxPoints = boxPoints(boxPairs(:, 1), :);

matchedScenePoints = scenePoints(boxPairs(:, 2), :);

figure;

showMatchedFeatures(rgb2gray(boxImage),rgb2gray(sceneImage), matchedBoxPoints, ...

matchedScenePoints, 'montage');

title('Putatively Matched Points (Including Outliers)');

[tform, inlierBoxPoints, inlierScenePoints] = ...

estimateGeometricTransform(matchedBoxPoints, matchedScenePoints, 'affine');

figure;

showMatchedFeatures(rgb2gray(boxImage), rgb2gray(sceneImage), inlierBoxPoints, ...

inlierScenePoints, 'montage');

title('Matched Points (Inliers Only)');

boxPolygon = [1, 1;... % top-left

size(boxImage, 2), 1;... % top-right

size(boxImage, 2), size(boxImage, 1);... % bottom-right

1, size(boxImage, 1);... % bottom-left

1, 1]; % top-left again to close the polygon

newBoxPolygon = transformPointsForward(tform, boxPolygon);

figure;

imshow(sceneImage);

hold on;

line(newBoxPolygon(:, 1), newBoxPolygon(:, 2), 'Color', 'y');

title('Detected Box');

感谢，

2016-04-12

Neagu V

+1

有一个功能CVST'insertShape' –