blocks|key|1897072|text|使用opencv+2.4.8重现。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1897073|如果你在Debug中运行，检查你是否也在使用调试库，它解决了我们的问题。：OpenCV+imread(filename)+fails+in+debug+mode+when+using+release+libraries。|offset|length|1897074|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/questions/9125817/opencv-imreadfilename-fails-in-debug-mode-when-using-release-libraries^0|0|11|20|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|O|8|@]|9|@$D|P|E|Q|1|R]]|A|$]]|$1|F|3|-4|5|6|7|S|8|@]|9|@]|A|$]]]|G|$H|$5|I|J|K|A|$L|M]]]]

Reproduced with opencv 2.4.8. 

If you are running in Debug, check that you are also using debug libraries, it fixed our problem. : <a href="https://stackoverflow.com/questions/9125817/opencv-imreadfilename-fails-in-debug-mode-when-using-release-libraries">OpenCV imread(filename) fails in debug mode when using release libraries</a>.

blocks|key|4007547|text|我在2.4.6版本中也遇到了同样的问题。原因是在选择库时，我同时选择了调试版本和发布版本。当我只为库选择调试版本时，一切工作正常|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4007548|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

i was facing the same problem with 2.4.6 . The reason was that while selecting the library , i had selected both the debug version and the release version. When i selected only the debug version for the library everything worked fine

blocks|key|1896903|text|我可以确认，OpenCV+2.2中的imread存在一些问题。然而，这些问题只出现在Windows+32位系统上。在linux和mac上，它都可以工作。我不知道为什么它不工作，但我们有一个小的变通方法。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1896904|我们用下面的宏解决了这个问题，也许你可以尝试一下，从那时起使用"ourImread“。|1896905|#ifdef+WIN32
#define+ourImread(filename,+isColor)+cvLoadImage(filename.c_str(),+isColor)
#else
#define+ourImread(filename,+isColor)+imread(filename,+isColor)
#endif|code-block|syntax|javascript|1896906|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|L|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|M|8|@]|9|@]|A|$G|H]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

I can confirm, that there are some problems with imread in OpenCV 2.2. However the problems only occurred on a Windows 32bit system. On a linux and on a mac it worked. I can't tell why it didn't work, but we had a small workaround for that.

We fixed this problem with the following macros, maybe you could try this out and use "ourImread" from then on.

<pre><code>#ifdef WIN32
#define ourImread(filename, isColor) cvLoadImage(filename.c_str(), isColor)
#else
#define ourImread(filename, isColor) imread(filename, isColor)
#endif
</code></pre>

blocks|key|1896998|text|我也遇到过同样的问题|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1896999|cv::Mat+image=+cv::imread("immagine12.jpg");+++//+Read+the+file

if(!+image.data+)++++++++++++++++++++++++++++++//+Check+for+invalid+input
{
++++cout+<<++"Could+not+open+or+find+the+image"+<<+std::endl+;
++++cv::waitKey(5000);
++++return+-1;
}

cv::namedWindow(+"Display+window",+CV_WINDOW_AUTOSIZE+);//+Create+a+window+for+display.
imshow(+"Display+window",+image+);++

//non+so+perchè+ma+senza+il+waitKey+e+lasciando+solo+il+system+pause+non+carica+l'immagine...
cv::waitKey(5000);


system("pause");|code-block|syntax|javascript|1897000|但我在插入cv::waitKey(5000);时修复了它|offset|length|style|CODE|1897001|我不知道为什么，但对于system+pause，它无法加载图像，并且在加载图像后暂停！|1897002|entityMap^0|0|0|5|I|0|B|C|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|S|8|@$I|T|J|U|K|L]]|9|@]|A|$]]|$1|M|3|N|5|6|7|V|8|@$I|W|J|X|K|L]]|9|@]|A|$]]|$1|O|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]]|P|$]]

I've had the same problem

<pre><code>cv::Mat image= cv::imread("immagine12.jpg"); // Read the file

if(! image.data ) // Check for invalid input
{
 cout &lt;&lt; "Could not open or find the image" &lt;&lt; std::endl ;
 cv::waitKey(5000);
 return -1;
}

cv::namedWindow( "Display window", CV_WINDOW_AUTOSIZE );// Create a window for display.
imshow( "Display window", image ); 

//non so perchè ma senza il waitKey e lasciando solo il system pause non carica l'immagine...
cv::waitKey(5000);


system("pause");
</code></pre>

but I fixed it when I inserted the <code>cv::waitKey(5000);</code> 
I don't know why but with <code>system pause</code> it can't load the image and it goes on pause after it loads the image!

blocks|key|1566217|text|我在Linux上也有类似的问题，当我只读取32位的tiff图像时。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1566218|Mat+mat=+imread(filename,+CV_LOAD_IMAGE_ANYDEPTH);|code-block|syntax|javascript|1566219|问题是因为出于某种原因，OpenCV没有使用Tiff支持构建。|1566220|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

I have similar problem on Linux, when reading 32 bit tiff images only.

<pre><code>Mat mat= imread(filename, CV_LOAD_IMAGE_ANYDEPTH);
</code></pre>

Problem was because OpenCV was not build with Tiff support for some reason.

blocks|key|1896890|text|如果您认为这是一个OpenCV错误，那么，请将您的图像和复制说明发布到OpenCV+bugtracker上。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1896891|entityMap|0|LINK|mutability|MUTABLE|url|https://code.ros.org/trac/opencv/^0|Z|H|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

If you think that it is an OpenCV bug then, please, post your image and instructions for reproducing to the <a href="https://code.ros.org/trac/opencv/" rel="nofollow">OpenCV bugtracker</a>.

blocks|key|4007642|text|我知道现在已经很晚了，但是有人可能会发现这很有帮助。我在使用OpenCV-3.0时也遇到了同样的问题。我尝试了所有的解决方案，但实际上我没有添加库opencv2/imgcodecs.hpp。虽然imshow在没有它的情况下也可以工作，但在我添加了这个之后，我就能够阅读图像了。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|4007643|entityMap^0|21|L|2P|6|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]|$9|K|A|L|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|M|8|@]|D|@]|E|$]]]|G|$]]

I know it is late but someone might found this helpful. I was facing the same problem while using <code>imread</code> using OpenCV-3.0. I tried all solutions but actually I was not adding the library <code>opencv2/imgcodecs.hpp</code>. Although <code>imshow</code> was working without it, but after I add this I was able to read the image.

blocks|key|5425909|text|OpenV4.3+Windows10+x64+Visual+Studio2019我终于解决了这个问题！|type|unstyled|depth|inlineStyleRanges|entityRanges|data|5425910|好的，现在，当你遇到问题时，你可以尝试：|5425911|对于发布/调试，请检查您的设置，确保没有在“项目->属性->链接器->输入”中混淆包含Unicode文件，opencv_xxx430d.lib(注意d)是用于调试的，opencv_xxx430.lib(无d)是用于发布的，并且平台是C/C%2B%2B->General中的Additional+include+directory，您需要设置分别用于Release/Debug.|offset|length|style|CODE|5425912|Maybe的X:/(opencv_build/install)/include和d12的Additional+include+directory，这也是我的问题，图像文件路径中的unicode符号，操！我不知道为什么，因为我的代码是非常正常的(注意，it+is++\**)**+string+path+=+"D:/kk.jpg+path+=+"?D:/kk.jpg"，但是你可以试着调试你的代码，也许你可以找到像path+=+"?D:/kk.jpg"这样的东西，什么他妈的！)所以，不要直接复制/粘贴您的图像路径，即使您已经使用了绝对路径，您仍然会遇到unicode问题，所以，您需要做的是删除代码行(string+path+=+"D:/kk.jpg)，然后逐个重新键入每个字符！如果你幸运的话，你会看到带有imshow的图片。祝你好运。|unordered-list-item|BOLD|5425913|5425914|entityMap^0|0|0|1H|I|22|1|2B|H|2U|1|38|E|3O|S|0|6|X|18|S|3O|1|3V|O|4K|J|5Q|J|8D|O|3O|V|4K|5P|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|R|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|S|8|@$F|T|G|U|H|I]|$F|V|G|W|H|I]|$F|X|G|Y|H|I]|$F|Z|G|10|H|I]|$F|11|G|12|H|I]|$F|13|G|14|H|I]]|9|@]|A|$]]|$1|J|3|K|5|L|7|15|8|@$F|16|G|17|H|I]|$F|18|G|19|H|I]|$F|1A|G|1B|H|I]|$F|1C|G|1D|H|I]|$F|1E|G|1F|H|I]|$F|1G|G|1H|H|I]|$F|1I|G|1J|H|I]|$F|1K|G|1L|H|M]|$F|1M|G|1N|H|M]]|9|@]|A|$]]|$1|N|3|-4|5|6|7|1O|8|@]|9|@]|A|$]]|$1|O|3|-4|5|6|7|1P|8|@]|9|@]|A|$]]]|P|$]]

Opencv4.3 Windows10 x64 Visual Studio 2019 I finally solved that problem!!!
Ok, now, when you meet the problem, you can try:
<ol>
<li>Check your settings, make sure you don't mix include .lib file in &quot;Project-&gt;Properties-&gt;Linker-&gt;Input&quot; for Release/Debug, that <code>opencv_xxx430d.lib</code>(note the <code>d</code>) is for Debug, and <code>opencv_xxx430.lib</code>(no <code>d</code>) is for Release, and the platform is <code>x64</code>.</li>
<li>And in <code>C/C++-&gt;General</code>, you need to set the <code>Additional include directory</code> that <code>X:/(opencv_build/install)/include</code> and <code>X:/(opencv_build/install)/include/opencv2</code> respectively for Release/Debug.</li>
<li>Maybe you should <code>#include &lt;opencv2/imgcodecs.hpp&gt;</code>.</li>
<li>Finally, the Unicode Problem, which is also my problem that, the unicode symbol in the image file path, fuck! I don't know why because my code is very normal <code>string path = &quot;D:/kk.jpg</code>(note that, it is <code>/</code> not <code>\</code>) but you can try to debug your code, maybe you can find there is something like <code>path = &quot;?D:/kk.jpg&quot;</code>, what the fuck! So don't directly copy/paste your image path, even you've already use the absolute path, you can still meet the unicode problem, so, what you need to do is delete the line of code(<code>string path = &quot;D:/kk.jpg</code>), and then just retype each character one by one! If you're lucky, you will see that image with imshow. Good luck.</li>
</ol>

blocks|key|4007345|text|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4007346|查看相关问题here+|ordered-list-item|offset|length|4007347|Please确保您的路径是正确的，|4007348|根据Opencv的|4007349|，我会尝试此调用：|4007350|4007351|arrayMat[i]=imread("1.jpg"+,+1+);|style|CODE|4007352|imread的参数：|4007353|Mat+imread(const+string&+filename,+int+flags=1)
Loads+an+image+from+a+file.

Parameters:+
+filename+–+Name+of+file+to+be+loaded.
+flags+–+Specifies+color+type+of+the+loaded+image:
+++>0+the+loaded+image+is+forced+to+be+a+3-channel+color+image
+++=0+the+loaded+image+is+forced+to+be+grayscale
+++<0+the+loaded+image+will+be+loaded+as-is+(note+that+in+the+current+implementation+the+alpha+channel,+if+any,+is+stripped+from+the+output+image,+e.g.+4-channel+RGBA+image+will+be+loaded+as+RGB+if++).+|code-block|syntax|javascript|4007354|祝你好运|4007355|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/questions/2584273/issue-with-reading-an-image-using-cvimread-function-in-opencv^0|0|6|5|0|0|0|0|0|0|0|X|0|0|0|0^^$0|@$1|2|3|-4|4|5|6|17|7|@]|8|@]|9|$]]|$1|A|3|B|4|C|6|18|7|@]|8|@$D|19|E|1A|1|1B]]|9|$]]|$1|F|3|G|4|C|6|1C|7|@]|8|@]|9|$]]|$1|H|3|I|4|C|6|1D|7|@]|8|@]|9|$]]|$1|J|3|K|4|C|6|1E|7|@]|8|@]|9|$]]|$1|L|3|-4|4|5|6|1F|7|@]|8|@]|9|$]]|$1|M|3|N|4|5|6|1G|7|@$D|1H|E|1I|O|P]]|8|@]|9|$]]|$1|Q|3|R|4|5|6|1J|7|@]|8|@]|9|$]]|$1|S|3|T|4|U|6|1K|7|@]|8|@]|9|$V|W]]|$1|X|3|Y|4|5|6|1L|7|@]|8|@]|9|$]]|$1|Z|3|-4|4|5|6|1M|7|@]|8|@]|9|$]]]|10|$11|$4|12|13|14|9|$15|16]]]]

<ol>
<li>see related question <a href="https://stackoverflow.com/questions/2584273/issue-with-reading-an-image-using-cvimread-function-in-opencv">here </a></li>
<li>Please make sure your path is correct , </li>
<li>According to the Opencv's API , I'd try this call: </li>
</ol>

<code>arrayMat[i]=imread("1.jpg" , 1 );</code>

The parameters for imread :

<pre><code>Mat imread(const string&amp; filename, int flags=1)
Loads an image from a file.

Parameters: 
 filename – Name of file to be loaded.
 flags – Specifies color type of the loaded image:
 &gt;0 the loaded image is forced to be a 3-channel color image
 =0 the loaded image is forced to be grayscale
 &lt;0 the loaded image will be loaded as-is (note that in the current implementation the alpha channel, if any, is stripped from the output image, e.g. 4-channel RGBA image will be loaded as RGB if ). 
</code></pre>

Good luck 
S

blocks|key|4007420|text|我也有同样的问题。我解决了。关键是文件名是否有jpg。如果文件名为p1，则应使用类似以下imread("p1.jpg")的名称。但是我们经常将文件名设置为p1.jpg，这里我们应该使用类似这样的imread("p1.jpg.jpg")。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|4007421|entityMap^0|X|2|18|G|25|6|2P|K|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]|$9|K|A|L|B|C]|$9|M|A|N|B|C]|$9|O|A|P|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|G|$]]

I have the same problem. I solved it. The key is whether the filename has jpg.
If the filename is <code>p1</code>, you should use something like this <code>imread("p1.jpg")</code>. But we often set the filename as <code>p1.jpg</code>, here we should use something like this <code>imread("p1.jpg.jpg")</code>.

blocks|key|4007580|text|这也发生在我身上，我的简单解决方案是使用C+API，然后转换为Mat|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|4007581|IplImage*+img+=+cvLoadImage("c://frame_201.bmp");
Mat+mat+=+Mat(img);|code-block|syntax|javascript|4007582|entityMap^0|V|3|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|P|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|L|$]]

This also happened to me, my simple solution was to use the C API and then convert to <code>Mat</code>:

<pre><code>IplImage* img = cvLoadImage("c://frame_201.bmp");
Mat mat = Mat(img);
</code></pre>

blocks|key|5425819|text|反之亦然:如果您正在构建Release，并且有Debug库，那么imread()会悄悄地失败(+imread()之后errno为0，但不填充image对象)。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|5425820|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

The reverse is also true: if you are building Release and you have Debug libraries, then imread() quietly fails (errno is 0 after imread(), but the image object is not populated).

blocks|key|5425841|text|另一种可能性是：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|5425842|如果你在OS上静态链接OpenCV，一定要使用OpenCV附带的libjpeg，而不是系统的libjpeg。|5425843|我在OpenCV+3.0上也遇到过类似的问题，只是cvLoadImage不能正常工作。因此，这可能不能真正回答你的问题，但它可能会帮助其他人。|offset|length|style|CODE|5425844|entityMap^0|0|0|P|B|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|M|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|N|8|@$F|O|G|P|H|I]]|9|@]|A|$]]|$1|J|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|K|$]]

Another possibility:

If you're on OS X and statically link OpenCV be sure to use libjpeg which is bundled with OpenCV, not the system's one.

I had similar problem with OpenCV 3.0, except that <code>cvLoadImage</code> was not working as well. So, this might not really answer your question, but maybe it will help someone else.

blocks|key|4007527|text|我也遇到了同样的问题，imread不能工作，而cvLoadImage可以工作。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4007528|我决定从头开始创建一个新的Visual+Studio，现在它可以工作了。|4007529|在win32下的OpenCV+2.4.3中，imread没有一般问题。|4007530|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|H|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|I|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|J|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|G|$]]

I also had the very same problem that imread didn't work and cvLoadImage did work.

I decided to create a new Visual Studio from scratch and now it works.

There is no general problem with imread in OpenCV 2.4.3 under win32.

blocks|key|1566109|text|我知道你想使用"imread“和"CV_LOAD_IMAGE_GRAYSCALE”自动转换。但是加载一张图片并转换为灰度的另一种方法：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1566110|define+CV_NO_BACKWARD_COMPATIBILITY

#include+<cv.h>
#include+<highgui.h>
#include+<math.h>

int+main(){

/*+load+the+image+*/
IplImage*+img++=+cvLoadImage("yourPicture.bmp");++//jpg+-+bmp

/*+retrieve+properties+*/
int+width+++++=+img->width;
int+height++++=+img->height;
int+nchannels+=+img->nChannels;
int+step++++++=+img->widthStep;

IplImage*+img2+=+cvCreateImage(cvSize(img->height,+img->width),IPL_DEPTH_8U,1);

/*+setup+the+pointer+to+access+image+data+*/
uchar+*data+=+(+uchar*+)img->imageData;++++
uchar+*data2=+(+uchar*+)img2->imageData;

/*+convert+to+grayscale+manually+*/
int+i,+j,+r,+g,+b,+byte;
for(+i+=+0+;+i+<+height+;+i%2B%2B+)+{
++++for(+j+=+0+;+j+<+width+;+j%2B%2B+)+{
++++++++r+=+data[i*step+%2B+j*nchannels+%2B+0];
++++++++g+=+data[i*step+%2B+j*nchannels+%2B+1];
++++++++b+=+data[i*step+%2B+j*nchannels+%2B+2];

++++++++byte+=+(+r+%2B+g+%2B+b+)+/+3;

++++int+v0=0,+v1=0,+v2=0;

++++data2[i*(img2->widthStep)%2Bj*(img2->nChannels)%2B0]+=+byte;
data2[i*(img2->widthStep)%2Bj*(img2->nChannels)%2B1]+=+byte;
data2[i*(img2->widthStep)%2Bj*(img2->nChannels)%2B2]+=+byte;
}
}

cvNamedWindow("ImagenColor",+1);
cvShowImage("ImagenColor",+img);

cvNamedWindow("Gray",+1);
cvShowImage("Gray",+img2);
}|code-block|syntax|javascript|1566111|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

I know you want use "imread" &amp; "CV_LOAD_IMAGE_GRAYSCALE" and convert automatically.
But this other way for load one picture and convert to gray scale:

<pre><code>define CV_NO_BACKWARD_COMPATIBILITY

#include &lt;cv.h&gt;
#include &lt;highgui.h&gt;
#include &lt;math.h&gt;

int main(){

/* load the image */
IplImage* img = cvLoadImage("yourPicture.bmp"); //jpg - bmp

/* retrieve properties */
int width = img-&gt;width;
int height = img-&gt;height;
int nchannels = img-&gt;nChannels;
int step = img-&gt;widthStep;

IplImage* img2 = cvCreateImage(cvSize(img-&gt;height, img-&gt;width),IPL_DEPTH_8U,1);

/* setup the pointer to access image data */
uchar *data = ( uchar* )img-&gt;imageData; 
uchar *data2= ( uchar* )img2-&gt;imageData;

/* convert to grayscale manually */
int i, j, r, g, b, byte;
for( i = 0 ; i &lt; height ; i++ ) {
 for( j = 0 ; j &lt; width ; j++ ) {
 r = data[i*step + j*nchannels + 0];
 g = data[i*step + j*nchannels + 1];
 b = data[i*step + j*nchannels + 2];

 byte = ( r + g + b ) / 3;

 int v0=0, v1=0, v2=0;

 data2[i*(img2-&gt;widthStep)+j*(img2-&gt;nChannels)+0] = byte;
data2[i*(img2-&gt;widthStep)+j*(img2-&gt;nChannels)+1] = byte;
data2[i*(img2-&gt;widthStep)+j*(img2-&gt;nChannels)+2] = byte;
}
}

cvNamedWindow("ImagenColor", 1);
cvShowImage("ImagenColor", img);

cvNamedWindow("Gray", 1);
cvShowImage("Gray", img2);
}
</code></pre>

I'm trying to use the <code>imread</code> function from OpenCV2.2. 

My code is very simple.

<pre><code>cv::Mat host= imread("1.bmp", CV_LOAD_IMAGE_GRAYSCALE);
</code></pre>

After that, the host matrix became filled by zeros pointers, i.e. an image has not loaded.

If I use <code>cvLoadImage</code> then it all works properly.

The file exists, and I am not mixing the release and debug libraries. Why <code>imread</code> doesn't work?

imread not working in Opencv

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我正在尝试使用OpenCV2.2中的imread函数。我的代码非常简单。cv::Mat host= imread("1.bmp", CV_LOAD_IMAGE_GRAYSCALE);在此之后，主机矩阵被零指针填充，即未加载图像。如果我使用cvLoadImage，那么一切都会正常工作。该文件已经存在，我没有混用发行库和调试库。为什么imread不能工作？

问imread在Opencv中不起作用
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