Temporal Filter

• MartyG

  • February 23, 2024 09:54

  Hello, there is an example of a Python script at the link below for defining and applying post-processing filters, including the Temporal filter.

  https://github.com/IntelRealSense/librealsense/issues/10078#issuecomment-997292916

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• 19829127419

  • February 26, 2024 07:39
  • Edited

  Do you have any other application examples on temporal filter? I still can't understand the one you gave me.

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• MartyG

  • February 26, 2024 09:13

  I hope that the script at the link below will be helpful.

  https://github.com/IntelRealSense/librealsense/issues/1672#issuecomment-387438447

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• 19829127419

  • February 27, 2024 01:29
  • Edited

  Can temporal filter work alone? Or does it need to be combined with other filters before it can be used? The reason I have this problem is because I find that using temporal filter alone doesn't seem to have much effect.

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• 19829127419

  • February 27, 2024 01:36

  I also have a question, what are the depth image filtering methods used in Intel RealSense Viewer? In what order do they act?

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• MartyG

  • February 27, 2024 06:40

  Post-processing filters can be used alone.  Whilst the filters do not interact with each other, the more that are used then the greater the difference that is made to the image.  However, because the filters are processed on the computer's CPU and not in the camera hardware, applying a lot of filters simultaneously may cause performance to reduce.

   

  A guide to some of the different types of post-processing filters can be found at the link below.

  https://dev.intelrealsense.com/docs/post-processing-filters

   

  When enabling filters in a program script, the guide recommends that the filters are applied in the following order:

  Depth Frame > Decimation Filter > Depth2Disparity Transform > Spatial Filter > Temporal Filter > Disparity2Depth Transform > Hole Filling Filter > Filtered Depth (Threshold filter).

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• MartyG

  • February 27, 2024 06:44

  As most people will not be using all of the filters, the way to use the filter order list is to work out whether a particular filter should be applied before or after another filter.  For example, if you were using Spatial, Decimation and Temporal filters then the order to apply them in according to the above list would be: Decimation, Spatial, Temporal.

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