Video Timestamps

(click the time stamp to jump directly to that point in the video)

• [00:14]What is photogrammetry?
• [01:02]Paul explains comprehensive Drone Mapping Workflow
• [01:40]Understanding the various capabilities of Pix4D
• [02:05]Understanding parallax, and how it affects data acquisition
• [02:47]What is ellipsoid error, and how can you eliminate it?
• [04:10]How to eliminate ellipsoid error using GCP's
• [05:15]Understanding the difference between Nadir, low oblique and high oblique imagery
• [07:24]How does mapping software work?
• [08:26]What are keypoints? And, how are keypoints used for determining tie-points?
• [09:40]What is ground sampling distance (GSD)? How does GSD affect image resolution and detail?
• [11:28]If you want a low GSD, what do you need to do?
• [12:39]Which are the 3 variables which will affect the Ground Sampling Distance of your maps?
• [13:10]Why is it critical that focal length does not change?
• [14:19]Can you use video in photogrammetry?
• [15:12]What is the purpose of image overlap in drone mapping?
• [15:48]What aspect ratio should you use for the Phantom 4 Pro?
• [16:10]As per industry standards, what is a good image overlap?
• [16:27]Global shutter vs. rolling shutter - understanding the difference
• [17:05]Can you make rolling shutter corrections in Pix4D?
• [17:28] Can your switch your drone camera with another camera as long as the sensor size and focal length remains the same?
• [18:30]Attributes that will allow you to capture optimal images