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我目前正在 matlab 中编写代码来分析滤心中的光流，并且由于某种原因，每当我运行它时，它都会返回奇怪的复杂函数。我不确定它们来自哪里，我希望能得到一些帮助来解决这个问题。

function [opticalFlow] = opticalflowanalysis(handles,hOpticalflow)

videoReader = vision.VideoFileReader('jun07_0165_segment8to12_20.avi','ImageColorSpace','Intensity','VideoOutputDataType','single');
converter = vision.ImageDataTypeConverter; 
opticalFlow = vision.OpticalFlow('OutputValue', 'Horizontal and vertical components in complex form','ReferenceFrameDelay', 6);
shapeInserter = vision.ShapeInserter('Shape','Lines','BorderColor','Custom', 'CustomBorderColor', 255);
videoPlayer = vision.VideoPlayer('Name','Motion Vector');
%Convert the image to single precision, then compute optical flow for the video. Generate coordinate points and draw lines to indicate flow. 

i=0;
mm = ones(1080,1920);
%Display results.      
while ~isDone(videoReader)
    frame = step(videoReader);
    im = step(converter, frame);
    of = step(opticalFlow, im); %always complex number
    aa = size(of)
    lines = videooptflowlines(of, 5); %complex number only sometimes - when lines appear?
    bb = size(lines)
    x = i+ 1;
    if(x==2)
        mm = of;
    end
    % show diff bw of and lines matrices
    if (x == 2)||(x == 10)
        for j=1:1:1080 %gives j = [1 2 ... 720]
            for k=1:1:1920 %gives k = [1 2 ... 1280]
                of(j,k)
                lines(j,k)
                if(of(j,k) ~= lines(j,k))
                    disp(['of[',num2str(j),',',num2str(k),'] = ', num2str(of(j,k)), '...', 'lines[',num2str(j),',',num2str(k),'] = ', num2str(lines(j,k))])
                end
            end
        end
    end
    if ~isempty(lines)
      out =  step(shapeInserter, im, lines); 
      step(videoPlayer, out);
    end
end
%Close the video reader and player ,
%handles.output = hObject;
release(videoPlayer);
release(videoReader);

mm

它返回：

aa =

        1080        1920


bb =

       36465           4

bb的变量来自哪里？

谢谢，雅各布

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1 回答 1

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尝试将分号 ( ie ) 放在分配和;的行的末尾aabb

aa = size(of);
...
bb = size(lines);

看看会发生什么。

请注意，因为在程序后面似乎都aa没有bb使用，所以您可以安全地删除这两行。

于 2013-07-29T22:38:21.747 回答