blocks|key|154066|text|imshow()仅适用于waitKey()|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|154067|import+cv2
img+=+cv2.imread('C:/Python27/03323_HD.jpg')
cv2.imshow('ImageWindow',+img)
cv2.waitKey()|code-block|syntax|javascript|154068|(更新窗口所需的整个消息循环都隐藏在那里。)|154069|entityMap^0|0|8|C|9|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@$9|P|A|Q|B|C]|$9|R|A|S|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|T|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|U|8|@]|D|@]|E|$]]|$1|M|3|-4|5|6|7|V|8|@]|D|@]|E|$]]]|N|$]]

<code>imshow()</code> only works with <code>waitKey()</code>:

<pre><code>import cv2
img = cv2.imread('C:/Python27/03323_HD.jpg')
cv2.imshow('ImageWindow', img)
cv2.waitKey()
</code></pre>

(The whole message-loop necessary for updating the window is hidden in there.)

blocks|key|4660597|text|您必须在cv2.imshow("window",img)之后使用cv2.waitKey(0)。只有到那时它才会起作用。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|4660598|import+cv2
img=cv2.imread('C:/Python27/03323_HD.jpg')
cv2.imshow('Window',img)
cv2.waitKey(0)|code-block|syntax|javascript|4660599|entityMap^0|4|O|W|E|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]|$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|R|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|S|8|@]|D|@]|E|$]]]|L|$]]

You must use <code>cv2.waitKey(0)</code> after <code>cv2.imshow("window",img)</code>. Only then will it work.

<pre><code>import cv2
img=cv2.imread('C:/Python27/03323_HD.jpg')
cv2.imshow('Window',img)
cv2.waitKey(0)
</code></pre>

blocks|key|4660670|text|在最后添加cv2.waitKey(0)。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|4660671|entityMap^0|5|E|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|K|8|@]|D|@]|E|$]]]|G|$]]

add <code>cv2.waitKey(0)</code> in the end.

blocks|key|4660689|text|对我来说，数字大于0的waitKey()可以工作|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4660690|++++cv2.waitKey(1)|code-block|syntax|javascript|4660691|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|$]]

For me waitKey() with number greater than 0 worked

<pre><code> cv2.waitKey(1)
</code></pre>

blocks|key|4660617|text|你已经在这个线程的某个地方得到了所有必要的部分：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4660618|if+cv2.waitKey():+cv2.destroyAllWindows()|code-block|syntax|javascript|4660619|在IDLE中对我来说工作得很好。|4660620|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|$]]

You've got all the necessary pieces somewhere in this thread:

<pre><code>if cv2.waitKey(): cv2.destroyAllWindows()
</code></pre>

works fine for me in IDLE.

blocks|key|154348|text|我是这样解决这个问题的：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|154349|import+cv2
from+matplotlib+import+pyplot
++++
img+=+cv2.imread('path')
pyplot.imshow(img)
pyplot.show()|code-block|syntax|javascript|154350|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|$]]

This is how I solved it:
<pre class="lang-py prettyprint-override"><code>import cv2
from matplotlib import pyplot
 
img = cv2.imread('path')
pyplot.imshow(img)
pyplot.show()
</code></pre>

blocks|key|4660641|text|如果你还没有让它工作，你最好把|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4660642|import+cv2
img=cv2.imread('C:/Python27/03323_HD.jpg')
cv2.imshow('Window',img)
cv2.waitKey(0)|code-block|syntax|javascript|4660643|放到一个文件中并运行它。|4660644|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|$]]

If you have not made this working, you better put

<pre><code>import cv2
img=cv2.imread('C:/Python27/03323_HD.jpg')
cv2.imshow('Window',img)
cv2.waitKey(0)
</code></pre>

into one file and run it.

blocks|key|4660788|text|在waitKey(0)之后不需要任何额外的方法(回复上面的代码)|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|4660789|import+cv2
img=cv2.imread('C:/Python27/03323_HD.jpg')
cv2.imshow('ImageWindow',img)
cv2.waitKey(0)|code-block|syntax|javascript|4660790|窗口出现->单击窗口，然后单击Enter。窗口将关闭。|4660791|entityMap^0|1|A|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|R|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|S|8|@]|D|@]|E|$]]|$1|M|3|-4|5|6|7|T|8|@]|D|@]|E|$]]]|N|$]]

Doesn't need any additional methods after <code>waitKey(0)</code> (reply for above code)

<pre><code>import cv2
img=cv2.imread('C:/Python27/03323_HD.jpg')
cv2.imshow('ImageWindow',img)
cv2.waitKey(0)
</code></pre>

Window appears -> Click on the Window &amp; Click on Enter. Window will close.

blocks|key|4660748|text|我也有一个-215错误。我认为imshow是问题所在，但当我将imread更改为读取一个不存在的文件时，我没有收到任何错误。因此，我将图像文件放在工作文件夹中，并添加了cv2.waitKey(0)，它就起作用了。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4660749|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 also had a -215 error. I thought imshow was the issue, but when I changed imread to read in a non-existent file I got no error there. So I put the image file in the working folder and added cv2.waitKey(0) and it worked.

blocks|key|4660820|text|这对我来说解决了，import+pyautogui|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|4660821|entityMap^0|9|G|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|K|8|@]|D|@]|E|$]]]|G|$]]

this solved it for me, <code>import pyautogui</code>

blocks|key|4660855|text|import+cv2
img=cv2.imread('C:/Python27/03323_HD.jpg')
cv2.imshow('Window',img)
cv2.waitKey(0)
cv2.destroyAllwindows()|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|4660856|您可以尝试以下代码:)|unstyled|4660857|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|J|8|@]|9|@]|A|$]]|$1|G|3|-4|5|F|7|K|8|@]|9|@]|A|$]]]|H|$]]

<pre><code>import cv2
img=cv2.imread('C:/Python27/03323_HD.jpg')
cv2.imshow('Window',img)
cv2.waitKey(0)
cv2.destroyAllwindows()
</code></pre>
you can try this code :)

blocks|key|4660886|text|对于64位系统以防止错误，请使用此端cv2.waitKey(1)+add+0xFF。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4660887|示例：|4660888|import+cv2
img=cv2.imread('C:/Python27/03323_HD.jpg')
cv2.imshow('Window',img)
cv2.waitKey(0)+&+0xFF+
cv2.destroyAllwindows()|code-block|syntax|javascript|4660889|您还可以使用以下命令，通过按Q按钮停止程序来进行更多控制。|4660890|import+cv2
img=cv2.imread('C:/Python27/03323_HD.jpg')
cv2.imshow('Window',img)
if+cv2.waitKey(0)+&+0xFF+==+ord('Q'):
++++break
cv2.destroyAllwindows()|4660891|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|P|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|Q|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|R|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|S|8|@]|9|@]|A|$G|H]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

For 64-bit systems to prevent errors, use this end cv2.waitKey(1) add 0xFF.
example:
<pre><code>import cv2
img=cv2.imread('C:/Python27/03323_HD.jpg')
cv2.imshow('Window',img)
cv2.waitKey(0) &amp; 0xFF 
cv2.destroyAllwindows()
</code></pre>
You can also use the following command for more control by stopping the program by pressing the Q button.
<pre><code>import cv2
img=cv2.imread('C:/Python27/03323_HD.jpg')
cv2.imshow('Window',img)
if cv2.waitKey(0) &amp; 0xFF == ord('Q'):
 break
cv2.destroyAllwindows()
</code></pre>

blocks|key|154168|text|如果您选择使用"cv2.waitKey(0)"，请确保您编写了"cv2.waitKey(0)“而不是"cv2.waitkey(0)"，因为小写的"k”可能也会冻结您的程序。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|154169|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|$]]

If you choose to use "cv2.waitKey(0)", be sure that you have written "cv2.waitKey(0)" instead of "cv2.waitkey(0)", because that lowercase "k" might freeze your program too.

blocks|key|4660711|text|我也有同样的215错误，我可以通过给出图像的完整路径来克服这个错误，比如C:\Folder1\Folder2\filename.ext|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4660712|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 had the same 215 error, which I was able to overcome by giving the full path to the image, as in, C:\Folder1\Folder2\filename.ext

I'm using opencv 2.4.2, python 2.7
The following simple code created a window of the correct name, but its content is just blank and doesn't show the image:

<pre><code>import cv2
img=cv2.imread('C:/Python27/03323_HD.jpg')
cv2.imshow('ImageWindow',img)
</code></pre>

does anyone knows about this issue?

cv2.imshow command doesn't work properly in opencv-python

我使用的是opencv 2.4.2，python 2.7下面的简单代码创建了一个具有正确名称的窗口，但是它的内容是空白的，并且没有显示图像：import cv2img=cv2.imread('C:/Python27/03323_HD.jpg')cv2.imshow('ImageWindow',img)有人知道这个问题吗？

问cv2.imshow命令在opencv-python中不能正常工作
EN

回答 14

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问cv2.imshow命令在opencv-python中不能正常工作EN

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问cv2.imshow命令在opencv-python中不能正常工作
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