I want to bundle up a sequence of images for action recognition system.
But I couldn’t find method that bundle up the sequence of images.
Because If I try to extract images before ‘nvinfer’, I couldn’t extract images(but I can extract images after ‘nvdsosd’)
How can I bundle up a sequence of images in deepstream before nvinfer?
Hi,
You can use a sink component to save the sequence into images (File Save).
https://docs.nvidia.com/metropolis/deepstream/dev-guide/text/DS_ref_app_deepstream.html#sink-group
Thanks.
Thank you for quick response.
But I want to not save images(because It is important to keep a high speed), but directly convert a image format that can be used by numpy or cv2.
And How to convert “stream -->image → modified image–> stream”, Before ‘nvinfer’ I can’t find the way.
Hi,
To use cv2 or numpy, you may want our Deepstream python interface.
You can find some examples on our GitHub.
Thanks.
But It isn’t work before nvinfer. How can I extract image before nvinfer?
Hi,
You can save the raw image in a similar way.
The frame buffer can be accessed with the following function:
n_frame=pyds.get_nvds_buf_surface(hash(gst_buffer),frame_meta.batch_id)
frame_image=np.array(n_frame,copy=True,order='C')
frame_image=cv2.cvtColor(frame_image,cv2.COLOR_RGBA2BGRA)
For example, the deepstream_imagedata-multistream.py (16.1 KB) is to dump each frame into the same folder.
Thanks.