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Fix#3714:Improve Display Image Tutorial

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For Bug #3714, user use the imshow() function without calling
namedWindow() properly, because user did not know the implicit rule for
imshow(). (i.e. without calling namedWindow implied calling namedWindow(
,CV__WINDOW_AUTOSIZE).

Improve the Display Image Tutorial to educate the user for such implied
rule.

Put a note on documentation for Bug#3714

Revise the documentation regarding to imshow() function to better
educate the user the implicit rule. (i.e. without creating the window
before the imshow() function is the same as creating AUTOSIZE window)
This commit is contained in:
HelenWong
2014-12-01 10:39:45 -08:00
parent 1ce31dcd62
commit ec57a938c0
2 changed files with 7 additions and 1 deletions
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modules/highgui/doc/user_interface.rst
+3 -1
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@@ -83,6 +83,8 @@ The function ``imshow`` displays an image in the specified window. If the window
* If the image is 32-bit floating-point, the pixel values are multiplied by 255. That is, the value range [0,1] is mapped to [0,255].
If the window was not created before this function, it is assumed creating a window with ``CV_WINDOW_AUTOSIZE``.
If window was created with OpenGL support, ``imshow`` also support :ocv:class:`ogl::Buffer` , :ocv:class:`ogl::Texture2D` and :ocv:class:`gpu::GpuMat` as input.
namedWindow
@@ -294,4 +296,4 @@ Force window to redraw its context and call draw callback ( :ocv:func:`setOpenGl
.. ocv:function:: void updateWindow(const string& winname)
:param winname: Window name
:param winname: Window name