Recent content by Spatial Analytics

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    Agisoft Photoscan - Altitude

    ANY PROGRESS ON THIS?
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    Phantom 4 - Survey Grade Mapping

    My method requires a Reach RTK unit and my timing chip, but doesn't require opening up the drone, just strapping it on. I am making small batches of my cradle and chip. PM me if you want more info.
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    P4P moving up down on its own after takeoff.

    This is a known problem caused be the heating up of the drone and the altimeter. Normally only affects the first 10 mins of flight then stabilises. If you look at your take off and landing altitudes in any log file you will see that the landing altitude is approximately 3m higher than take off...
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    Turn off front LED's for shooting?

    HI there, Can I automatically turn off the front LED's when filming or taking a photo like the Phantom 4? If I can, where can I find it on the menu? Thanks in advance for your help.. Simon
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    Surveying and Mapping with P4P and Photoscan

    It's interesting PPK / RTK increases the opportunity for bad data if it is processed without thought or understanding. In my view the issue is around drawing the line between what can be systemised/automated vs where thought is needed. Reliable automatic image recognition for large permanently...
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    Surveying and Mapping with P4P and Photoscan

    Thanks for the link. Would be interested in repeating the linked test (or maybe I find a similar quarry) and do the analysis with and without the reach PPK. I keep running into the accuracy issue. To be clear: As a survey company / drone service providerit is absolutely beholden on you to...
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    Surveying and Mapping with P4P and Photoscan

    I agree, however there is a difference between providing control and laboriously adding GCP's to constrain a poorly positioned survey platform. Two GCPs to confirm scale, orientation and position are adequate with a PPK GNSS positioned aerial platform.
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    Phantom 4 Pro+ Option For Mapping

    GCP's are great for absoulute accuracy, but depending on the job, you may not need them. I have built a cradle and timing capture device for the Emlid Reach RTK/PPK unit. When fitted on my Phantom 4 it captures precise timing and raw GPS data for post processed RTK (can capture RTK but why...
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    Surveying and Mapping with P4P and Photoscan

    The P4 altitude drifts downwards over a 20 minute flight by 3 metres due to the sensor warming up. If you do not use GCP's or a bolt on RTK GPS then you will end up with slopes that don't exist. I have the data to support this if anyone doubts. It was a bit of a shock. You can prove this...
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    Mapping software - Datumate/3Dsurvey/?

    Mapillary's OpenSFM would be the answer if you were willing to learn it. Open Drone Map focusses primarily on the creation of maps, and uses an older version of OpenSFM. ColMap does a great job, but doesn't texture map. I have built a cradle and timing capture device for the Emlid Reach...
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    p4 mapping apps?

    MapsMadeEasy would be a solution for you. Free for maps up to 102 mages. I have built a cradle and timing capture device for the Emlid Reach RTK/PPK unit. When fitted on my Phantom 4 it captures precise timing and raw GPS data for post processed RTK (can capture RTK but why carry the extra...
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    Aerial mapping software advice - pix4D ? Advice please

    Assume you have tried Maps Made Easy. This is free for maps up to 102 images, including download of the products. I have built a cradle and timing capture device for the Emlid Reach RTK/PPK unit. When fitted on my Phantom 4 it captures precise timing and raw GPS data for post processed RTK (can...
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    Phantom 4 - Survey Grade Mapping

    Hi there, Thought this thread needed revitalising. I have built a cradle and timing capture device for the Emlid Reach RTK/PPK unit. When fitted on my Phantom 4 it captures precise timing and raw GPS data for post processed RTK (can capture RTK but why carry the extra weight?). With this on my...