What is the Libargus API downscaling ratio boundary

Autonomous Machines Jetson & Embedded Systems Jetson AGX Orin
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It seems that Libargus API supports arbitrary downscaling ratio. What is the boundary of the ratio, such as [0.1 1]?

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What’s the Argus API?

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My bad. I didn’t find an API which directly supports downscaling. I found from some website listed “Downscaling” as a Libargus library feature, such as this one: Jetson Image Processing - APIs - ximea support.

I guess that is achieved from setting the output resolution. Then my question becomes following questions.

  1. Is there a boundary of the output resolution, such as minimum resolution is 200x100 (width x height)?
  2. Can I do upscaling? For example, the sensor output resolution is 1920x1080 and I set the output resolution to 3840x2160? If I can, is there maximum resolution, such as up to 4x sensor output resolution?
  3. Is “setSourceClipRect()” in “IStreamSettings” the function I can use to achieve ROI? It seems that this function only takes relative coordinates (range [0.0, 1.0]). Is there a way I can implement ROI with absolute coordinate, such as [100, 100, 720, 580]?
  4. For ROI, is there a minimum resolution, such as the minimum width is 200 and the minimum height is 100?
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  1. The minimum size is 640x480
  2. The maximum could be 12000x12000
  3. Suppose the setAeRegion should be for the ROI setting. And getMaxAeRegions to get the boundary.
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Thank you for your information!

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