Re: Way to convert a cv::Mat object to a wxBitmap or wxImage

Hi, Rossano Paris, thanks for the sharing. 
I just looked at the cpp file, it looks like the second way is just like 
the same way as mentioned in PB's project:
https://github.com/PBfordev/wxopencvtest/blob/main/convertmattowxbmp.cpp In 
the function ConvertMatBitmapTowxBitmapMSW.
What do you think about it?
Thanks.
Asmarrior
On Wednesday, March 22, 2023 at 1:16:58 AM UTC+8 Rossano Paris wrote:

> Hallo at all
> I'd like to offer my way to achieve what I asked days ago ...
>
> Here attached you can find a class useful to convert a cv::Mat object to a 
> wxWidgets image object.
> There are two different way to make the conversion, one based on opencv 
> functions *(1)*, which is very slow and the faster one *(2),* which is 
> based on this code: link to code 
> <https://github.com/opencv/opencv/blob/master/modules/highgui/src/window_w32.cpp>
>
> *(1)* static const wxImage cvMatToWxImage(const cv::Mat& image, 
> wxBitmapType imgtype, std::vector<int> par);
> *(2)* const wxImage wxhOpenCvTools::cvMatToWxImage(wxWindow* pWindow, 
> const cv::Mat& image)
>
> best regards
> Rossano
>
> On Sunday, 12 February 2023 at 14:27:43 UTC+1 Rossano Paris wrote:
>
>> Thank you Eric for your tips
>> I'll take a look at them
>>
>> On Thursday, 9 February 2023 at 14:02:50 UTC+1 Eric Jensen wrote:
>>
>>> Hello Rossano, 
>>>
>>> Thursday, February 9, 2023, 12:57:38 PM, you wrote: 
>>>
>>> RP> Hallo at all. 
>>>
>>> RP> I came here to ask someone a more conveninet way to convert a 
>>> cv::Mat image 
>>> RP> to BMP. 
>>> RP> Expecially talking about loading such image from memory. 
>>>
>>> Code: 
>>> https://github.com/PBfordev/wxopencvtest/blob/main/convertmattowxbmp.cpp 
>>>
>>> Related forum post: 
>>> https://forums.wxwidgets.org/viewtopic.php?f=20&t=47603 
>>>
>>> Documentation for bitmap raw pixel access: 
>>> https://docs.wxwidgets.org/trunk/classwx_pixel_data.html 
>>>
>>> Credit to PB (pbfordev) 
>>>
>>> Hth 
>>> Eric 
>>>
>>>
>>> -- 
>>>
>>>

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