How to get image data from frame_meta?

[Fresher]

• Hardware Platform : GPU
• DeepStream Version : 6.2
• Language : C++

Is there any way to get frame as image from frame_meta?

I have read NVIDIA DeepStream SDK API Reference: NvBufSurface Types and Functions | NVIDIA Docs about bufSurface but not familiar with low level terminology.

[yuweiw]

You can refer to the link below first: https://forums.developer.nvidia.com/t/deepstream-sdk-faq/80236/17

[Fresher]

without saving as file, cannot we get the image data?

[yuweiw]

How do you want to use the image data?

[Fresher]

transferable via kafka or uploadable to aws s3/azure blob. The purpose is to send a frame image (for example- when object enters an area) and later use it for other purposes.

[yuweiw]

OK. We currently do not have such a demo, but you can try to implement it yourself. You can refer to the topic below: https://forums.developer.nvidia.com/t/how-can-i-send-frames-though-kafka-along-with-metadata/255188/4

[Fresher]

is there any c++ implementation of this python code?

n_frame = pyds.get_nvds_buf_surface(hash(gst_buffer), frame_meta.batch_id)
frame_copy = np.array(n_frame, copy=True, order='C')

[yuweiw]

There is no update from you for a period, assuming this is not an issue anymore. Hence we are closing this topic. If need further support, please open a new one. Thanks

About C/C++, you can refer to our open souce demo to learn how to save image: sources\apps\sample_apps\deepstream-image-meta-test\deepstream_image_meta_test.c.