Research Experiment: Point Cloud Quality Evaluation

Key Focus: Evaluate the QUALITY of point clouds in virtual reality environments.

Experiment Structure

You will participate in 4 blocks of evaluations. Each block consists of the following:

  1. Viewing and evaluating an initial point cloud
  2. Viewing and evaluating a second point cloud
  3. Rating the difference between the two point clouds

Your Task

1. You will be immersed in a point cloud environment.
2. Explore the point cloud to familiarize yourself with it for later evaluation.
Point Cloud Image
3. As a control measure, there are one letter/number hidden in the cloud which you must identify. You will be asked about it later during the evaluation.
Letter Point Cloud Image
4. Please rate the quality of the point cloud on a scale and enter the corresponding control letter/number that you observed.
Rating Scale Image
5. You will then experience a second point cloud.
6. Repeat steps 2 and 3 for the new cloud, then rate its quality, enter the control letter/number from the cloud, and assess the difference in quality compared to the previous one.
Different Compression Settings Image

This sequence of two point clouds and their evaluations will be repeated 4 times (4 blocks).

After completing all blocks, you will have the opportunity to provide feedback, which we greatly appreciate for further improvement of our research.

To help you familiarize yourself with the survey, you will complete a trial run beforehand.