CUDA ISP for NVIDIA Jetson: GStreamer usage

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CUDA ISP for NVIDIA Jetson
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CUDA ISP for NVIDIA Jetson Basics
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GStreamer
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General

CUDA ISP provides three different GStreamer elements to apply the different algorithms to raw image data coming from a camera sensor. The 3 elements are:

  • cudashift
  • cudadebayer
  • awb

In the following sections you can see examples on how to use this elements.

cudashift

  • Input:
    • Bayer 10/12/14/16
  • Output
    • Bayer 8
  • Property
    • shift: number of bits to shift right per pixel.

The following pipeline receives a bayer 10 image with 4k resolution from a camera sensor, applies a shifting with a value of 5 and outputs a bayer 8 image. 

gst-launch-1.0 -ve v4l2src io-mode=userptr ! 'video/x-bayer, bpp=10, format=rggb' ! cudashift shift=5 ! fakesink




Error creating thumbnail: Unable to save thumbnail to destination




cudadebayer

  • Input
    • Bayer 10/12/14/16
  • Output
    • RGB or I420
  • Property
    • shift: number of bits to shift right per pixel.
gst-launch-1.0 -ve v4l2src io-mode=userptr ! 'video/x-bayer, bpp=10, width=3840, height=2160' ! cudadebayer ! fakesink

DEBAYEROUTPUT=I420

gst-launch-1.0 -ve v4l2src io-mode=userptr ! 'video/x-bayer, bpp=10, width=3840, height=2160' ! cudadebayer ! 'video/x-raw, format=$DEBAYEROUTPUT' ! fakesink

gst-launch-1.0 -ve v4l2src io-mode=userptr ! 'video/x-bayer, bpp=10, width=3840, height=2160' ! cudadebayer ! queue ! videoconvert ! 'video/x-raw' ! videoscale ! 'video/x-raw, width=640, height=480' ! ximagesink display=localhost:10.0 sync=false

GST_DEBUG=WARNING,*debayer*:LOG gst-launch-1.0 -ve v4l2src io-mode=userptr ! 'video/x-bayer, bpp=10, format=rggb' ! cudashift shift=5 ! 'video/x-bayer, bpp=8, format=rggb' ! cudadebayer ! 'video/x-raw, format=RGBA' ! fakesink

cudaawb

gst-launch-1.0 -ve v4l2src io-mode=userptr ! 'video/x-bayer, bpp=10, width=3840, height=2160' ! cudashift shift=0 ! cudadebayer ! cudaawb ! queue ! videoconvert ! 'video/x-raw' ! videoscale ! 'video/x-raw, width=640, height=480' ! ximagesink display=localhost:10.0 sync=false









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