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                                            zihaomu

OpenCV4.8.0 DNN inference speed reduced by 50%.

No idea

OpenCV4.8.0 DNN inference speed reduced by 50%.

Have you compare Opencv455 without openvino with opencv480

OpenCV4.8.0 DNN inference speed reduced by 50%.

Can you disable the `Inference Engine` to rebuild and test it again? I just recheck you issue cmake file. And found that 4.5 compiled with Inference Engine, and 4.8 without...

OpenCV4.8.0 DNN inference speed reduced by 50%.

disable the openvino so that we can make sure dnn was running by cpu instead of openvino. Since the original 4.5 or 4.8 can not achieve yolov4 tiny model about...

OpenCV4.8.0 DNN inference speed reduced by 50%.

To further investigate the speed issue. The following table result would be helpful. | Speed of yolov4-tiny | OpenCV 4.5 | opencv 4.8 | | ------------------------------------------------------- | ---------- | ----------...

OpenCV4.8.0 DNN inference speed reduced by 50%.

Thanks for your work. I will take a look at the details. And do the layer-by-layer speed comparison.

OpenCV4.8.0 DNN inference speed reduced by 50%.

BTW, what's your cpu details info?

OpenCV4.8.0 DNN inference speed reduced by 50%.

I still cannot reproduce the result on my Intel i7-9750 CPU laptop, windows 10, VS2019. The speed is the following: - opencv-4.8 takes about 50 ms. - opencv-4.5.5 takes about...

OpenCV4.8.0 DNN inference speed reduced by 50%.

And I have tested it with my AMD 5600X desktop, it should be faster than i7-9700. And it takes about 40 ms. Maybe I miss something. Can you test the...

OpenCV4.8.0 DNN inference speed reduced by 50%.

@WanliZhong Please take a look.