Pixels and Points

• Episode #35 Do Larger Format Sensors Increase mapping Productivity?

  Hosted by Eric Andelin CP, Senior Workflow Advisor, SimActive with guest speaker, Dr. Mohsen Miri, Director of Global Strategic Partnerships, Phase OneAerial cameras and photogrammetry are proven mapping solutions on both drones and aircraft. Phase One offers a range of imaging sensors to support each of these platforms. Along with this, they have developed an image compression technology called IIQ to support the large amounts of data being captured. Processing such large files and datasets can be challenging and workflows can be simplified by taking advantage of the IIQ format. Dr. Mohsen Miri, Director of Global Strategic Partnerships, with Phase One, joins our host Eric Andelin to discuss camera technology and image processing workflows to meet today’s mapping needs. Specifically, listeners will learn the following: • Determining your project requirements• Choosing the right imaging sensor• Understanding the impact of sensor size on processing• Simplifying your processing workflow

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• Episode #34 Managing Large Photogrammetry Projects With New Correlator3D Version 10.3

  Hosted by Eric Andelin CP, Senior Workflow Advisor, SimActive with guest speaker David Alamillo Photogrammetry Specialist with SimActive. Podcast Announcement Eric and David, two photogrammetry experts, will discuss the features and benefits of new Correlator3D Version 10.3. This release reflects a lot of work under the hood, specifically to optimize interactions with data when working with large datasets. As users continue to push these limits, our development team keeps enhancing performance and user experience with the software. Version 10.3 provides many improvements because of feedback from users working on very large projects. Specifically, listeners will learn the following: • Preparing to process large projects • Best practices for success • Speeding up processing with multiple PCs • New features of version 10.3

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• Episode #33 What Are the Advantages of Lidar With Drones?

  Hosted by Eric Andelin CP, Senior Workflow Advisor, SimActive with guest speaker Maude Pelletier, President and CEO of Balko Technologies Weight, cost, and complexity have always been large hurdles for those wishing to employ lidar with drones. As manufacturers have worked diligently to solve the first two, bringing all the components together to produce a high-quality point cloud can still be challenging. However, where there is dense vegetation lidar does a very good job of penetrating tree canopy to reveal ground points. Whereas photogrammetry is inherently easier for the user to interpret as it is based on imagery rather than just points. While each works as standalone solution, there are also many benefits to a hybrid option using both. Maude Pelletier, President and CEO of Balko Technologies, joins us to discuss the future of lidar and hybrid solutions. Listeners will learn the following: • Understanding the benefits of lidar and imagery • Selecting the proper hardware configuration • Planning for dual acquisition • Merging lidar and photogrammetry in C3D

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• Episode #32 Mapping Water: Can You Really Do It?

  Hosted by Eric Andelin CP, Senior Workflow Advisor, SimActive with guest speaker Austin Scheib, Certified UAS Pilot. Mapping areas with water through photogrammetry can be a challenge. Sun reflections and homogeneity between images can really make the process difficult. Resulting DSMs/DTMs can often be noisy, while orthomosaics may present color issues. To mitigate this, additional tie points can be used while performing aerial triangulation, or existing polygons of water bodies can be applied with fixed elevation values. Moreover, seamline editing can be done to create the best possible orthomosaic by choosing images or areas within images where little glare can be found. Austin Scheib joins us to discuss some of the challenges he has faced, and best practices involved in mapping around water. Specifically, listeners will learn the following: • Considerations before flight • Options for successful aerial triangulation • Ways to fix DSMs/DTMs • Solutions to ensure the quality of mosaics

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• Episode #31 Can RTK/PPK Really Remove the Need for GCPs?

  Hosted by Eric Andelin CP, Senior Workflow Advisor, SimActive with guest speaker Chris Greene UAS Manager with Bullseye Construction. Drones used for mapping require much more than a capable pilot, drone, and photogrammetry software. To create map products, the resulting image data must be tied to the ground. And for this, some form of survey is required. Survey can be in the form of targets surveyed on, or in the air on the drone itself using RTK or PPK technology in conjunction with a receiver in the ground. In either case, the goal is to correct the position of the raw image data spatially so that it fits the same reference system on the ground. Chris Greene with Bullseye Construction joins us to discuss the challenges of new survey technology vs conventional methods.     Specifically, listeners will learn about the following: Understanding RTK/PPK for drone Supplementing with GCPs        Managing accuracy with Correlator3D Confirming the quality of results

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