Spherical Video PTZ/User Guide/Quick Start Guide

Spherical Video PTZ
Getting Started
Spherical Video PTZ Projections Used Evaluating the Product Getting the code
User Guide
Building and Installation Quick Start Guide
Examples
Gst-launch GstD
Performance
Jetson AGX Xavier
Contact Us

Libpanorama

This wiki introduces a basic use of Spherical Video PTZ for converting equirectangular images to rectilinear format with an engine. It includes a simple example and instructions on how to use the engine for different needs. The engine makes it easy to change panoramic images into a straight view, useful for many projects.

Minimal Application

After Building and Installation, follow these steps:

1. Download the sample images, if you haven't already.

cd samples
./download_samples.sh
cd ..

2. This example demonstrates the use of the Spherical Video PTZ engine to convert equirectangular images into rectilinear format. This command processes example_image.jpg, converting it from an equirectangular format to a rectilinear view. But you can use any other reference image as long as it is equirectangular. Run the example as:

./builddir/examples/equirectangular_to_rectilinear_npp examples/example_image.jpg

3. For this example you can use the interactive controls with the Spherical Video PTZ (Pan-Tilt-Zoom) for dynamic exploration of panoramic images. Hit the specified keys when the example is running:

• Zoom In/Out: Adjust the zoom level to get a closer view or a wider perspective of the image.
  • In: i
  • Out: o
• Pan Left/Right: Rotate the view horizontally to explore the left or right sides of the panoramic image.
  • Left: 4
  • Right: 6
• Tilt Up/Down: Adjust the vertical angle of the camera to look up or down within the panoramic image.
  • Up: 8
  • Down: 2

Spherical Video PTZ Engine

Description of how to use the engine

GstRrPanoramaptz

The GstRrPanoramaptz plugin allows for real-time PTZ adjustments on panoramic video feeds, enabling users to explore video scenes in greater detail or from different perspectives.

Overview

Features

• CUDA-accelerated PTZ transformations.
• Support for RGBA video format.
• Dynamic parameter adjustments for pan, tilt, and zoom.

Properties

• Rotate the video on its horizontal axis. Range: -360 to 360 degrees. Default: 0.
• Rotate the video on its vertical axis. Range: -360 to 360 degrees. Default: 0.
• Dynamic parameter adjustments for pan, tilt, and zoom. WIP

Caps and Formats

• Accepts and outputs video in video/x-raw format with RGBA color space.
• Supports both system memory and NVMM memory inputs for enhanced performance on NVIDIA hardware.

Basic use example

To pan a test video source 90 degrees, you can use the following pipeline:

gst-launch-1.0 videotestsrc ! rrpanoramaptz pan=90 ! fakesink