Question

我必须使用MATLAB中的图像提取来提取图像的特征。它可以成功地使用The MathWorks在他们的教程中提供的图像，但是当我输入另一个图像时它不起作用

我的图像提取代码是：

boxImage = imread('stapleRemover.jpg');
%boxImage = imread('D:\matlab test\book\IMG_2294.jpg');

figure;
imshow(boxImage);
title('Image of a Box');

%sceneImage = imread('D:\matlab test\book\IMG_2291.jpg');
sceneImage = imread('clutteredDesk.jpg');
figure;
imshow(sceneImage);
title('Image of Cluttered Scene');

%detecting feature point
boxPoints = detectSURFFeatures(boxImage);
scenePoints = detectSURFFeatures(sceneImage);

figure;
imshow(boxImage);
title('100 strongest feature Points from Box Image');
hold on;
plot(selectStrongest(boxPoints, 100));

figure;
imshow(sceneImage);
title('300 Strongest Feature Points from Scene Image');
hold on;
plot(selectStrongest(scenePoints, 300));

%extracting feature descriptor
[boxFeatures, boxPoints] = extractFeatures(boxImage, boxPoints);
[sceneFeatures, scenePoints] = extractFeatures(sceneImage, scenePoints);

%finding putative point match
boxPairs = matchFeatures(boxFeatures, sceneFeatures);

matchedBoxPoints = boxPoints(boxPairs(:, 1), :);
matchedScenePoints = scenePoints(boxPairs(:, 2), :);
figure;
showMatchedFeatures(boxImage, sceneImage, matchedBoxPoints, matchedScenePoints, 'montage');
title('Putatively Matched Points (Including Outliers)');

%locating object in the scene using putative matches
[tform, inlierBoxPoints, inlierScenePoints] =  estimateGeometricTransform(matchedBoxPoints, matchedScenePoints, 'affine');

figure;
showMatchedFeatures(boxImage, 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(boxPolygon);
imshow(sceneImage);
hold on;
line(newBoxPolygon(:, 1), newBoxPolygon(:, 2), 'Color', 'y');
title('Detected Box');

它成功运行，但当我更改我使用相机拍摄的图像时，它会停止在此行上执行代码：

boxPoints = detectSURFFeatures(boxImage);

任何人都可以帮我出去吗？

Answer 1

你得到什么错误？根据您提供的信息，我猜您的图像是RGB，您需要将其转换为灰度，然后再将其传递给detectSURFFeatures。

Answer 2

未定义的函数showMatchedFeatures 对于SURFPoints类型的输入参数。在matlab 2012a

图像提取：输入图像代码时停止执行

2 个答案: