I can't use a compiled file to draw a circle through OpenCV。

[tangtao007]

hi I downloaded the code and wrote a simple code through Ubuntu to draw a circle, but I don't know why I can't display it successfully on the page plz help me thanks.

this is my code:
int EMSCRIPTEN_KEEPALIVE draw_cicle() {
Point center = Point(255,255);
int r = 100;
Mat picture(500,500,CV_8UC3,Scalar(255,255,255));
circle(picture,center,r,Scalar(0,0,0));
imshow("imag",picture);
}

[Adi Shavit]

You cannot use imshow() since there is no UI support in Emacripten.

…

On Sat, 18 Aug 2018 at 3:27 happytoTom ***@***.***> wrote: hi I downloaded the code and wrote a simple code through Ubuntu to draw a circle, but I don't know why I can't display it successfully on the page plz help me thanks. this is my code: int EMSCRIPTEN_KEEPALIVE draw_cicle() { //圆心 Point center = Point(255,255); //半径 int r = 100; //承载图像 Mat picture(500,500,CV_8UC3,Scalar(255,255,255)); //参数为：承载的图像、圆心、半径、颜色、粗细、线型 circle(picture,center,r,Scalar(0,0,0)); imshow("底板",picture); } — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#3>, or mute the thread <https://github.com/notifications/unsubscribe-auth/ABuxECEUQHYlnMPN5APpL7Hf9fLeDTlGks5uR192gaJpZM4WCWcJ> .

[tangtao007]

@adishavit I'm really glad to see your reply. I have been waiting for your reply. If I want to draw a circle to display in the HTML, could you give me some hints? Thanks.

[Adi Shavit]

That’s really outside the scope of this blog post.

[tangtao007]

@adishavit Ok, I'm going to close this problem and I'm going to share if I solve it. I have another problem with compilation. I will open another one about dnn. Thank you