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

Hi, AsmWarrior
I've seen such example, but in my case I wasn't be able to make it working
That's why I've decided to lokk at the way OPENCV uses in order to paint a 
cv:Mat under MSW
As I've already written my code is based on: link to code 
<https://github.com/opencv/opencv/blob/master/modules/highgui/src/window_w32.cpp>
Thanks to OPENCV file example I could achive my aim, unfortunatelly with 
other code I've found around I couldn't.

Regards
Rossano
On Thursday, 30 March 2023 at 07:36:06 UTC+2 AsmWarrior wrote:

> 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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