![]() ![]() Otherwise, applications like Pix4D are necessary to be able to exploit and interpret the data in a more abstract way. The link to the NASA article above sums up the process quite well without programming, but assumes an unavoidable level of physics. Sadly, this type of calculations need a deep understanding of the subject (to make sure you make a meaningful calculation) as well as programming (to ensure that the implementation is correct and effective). Then this same coefficient is applied directly to the other images of the same flight to find the reflectivity of the scene. The coefficient K is calculated only for the images of a calibration card. La liga al artículo de la NASA más arriba resume bastante bien el proceso sin programación, pero asume un nivel de física inevitable.ĭe otro modo, aplicaciones como Pix4D son necesarias para poder explotar e interpretar los datos de forma más abstracta. Tristemente, este tipo de cálculos necesitan una comprensión profunda del tema (para asegurarse de hacer un cálculo con sentido) así como de programación (para garantizar que la implementación es correcta y eficaz). Luego este mismo coeficiente se aplica directamente a las otras imágenes de un mismo vuelo para encontrar la reflectividad de la escena. Hola coeficiente K es calculado únicamente para las imágenes de alguna tarjeta de calibración. Suddenly you can share the complete process that you have done, I am reading your comments and I would like to try this process, even though my level of programming language is null … I see that they calculate or extract the encoded data of the image … they do it from a single image, for example of the image that has the photo of the calibration card or use the script to decode all the images irradiencelist …? greetings and thanks suddenly you can share the process in a more specific way for not so advanced users. ![]() Saludos y gracias de pronto puedas compartir el proceso de una manera mas especifica para usuarios no tan avanzados. Veo que calculan o extraen los datos codificados de la imagen… esto lo hacen de una sola imagen, por ejemplo de la imagen que posee la foto de la tarjeta de calibración o usan el script para decodificar de todas todas las imagenes la irradiencelist…? Some multispectral cameras such as Airinov multiSPEC 4C by Airinov, rededge by MicaSense, parrot sequoia and PARROT SEQUOIA+ are works very well with PIX4D. The spare point cloud looks really good, although some of the camera positions are obviously wrong - it was an RTK survey so shouldn’t be seeing that much difference between computed and initial positions.De pronto puedes compartir el proceso completo que has realizado, estoy leyendo sus comentarios y me gustaría intentar también este proceso, aunque mi nivel de lenguaje de programación es nulo… Being in the middle, there are no GCPs to apply, and I’m getting exactly the same error as described above. The multiSPEC 4C camera contains an integrated upward-facing irradiance. TIF files, I’m only running 890, so it runs much quicker. MultiSpec will recognize the GDAL VRT file structure for images. MultiSpec will not lock up if one opens the overlay drop down menu and then does not select an option in it. I’m currently testing on a subset of images from the middle of one of the survey sites - the whole dataset is 10,000. MultiSpec seemed to be locked up until one actully selects one of the overlay options. Typical input: aerial images acquired using a grid flight plan with high overlap. Image acquisition: nadir or oblique flight. I manually checked all the EXIF data for one of the new photos that isn’t working vs one of the photos for a survey that did work - the drones were running the same firmware version, so no easy wins there. Here is a description of the available processing templates: Generates a 3D map (point cloud, 3D textured mesh), as well as a DSM and an orthomosaic. : The camera model is valid, if it is retrieved from. I’m running this in GDA2020, whereas those previous surveys were in WGS84…not sure if that would affect anything? Typical input: images from multispectral cameras (Sequoia, Micasense RedEdge, Multispec 4C, etc). pdf, but those same settings aren’t working for me. p4d and project files, so all I have to compare is the report. ![]() We’ve previously processed a few P4MS flights successfully in Pix4dmapper. I should note that the densification fails the same way either time, but sometimes on the NIR, others on the RE. I’ve tried multiple different surveys of various sizes, both with and without GCPs and I get the same error, so I don’t think the GCP process is causing the problem. ![]()
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