Sara Safavi
Planet Community admin | Head of Dev Rel @ Planet | pronouns: she, her, hers
Activity overview
Latest activity by Sara Safavi-
Sara Safavi created an article, Vessel Detection Size Guidelines
Planet imagery can detect vessels as small as approximately 10 meters in length (around 3 pixels in PlanetScope imagery). However, detection accuracy at this size can vary significantly depending o...
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Sara Safavi created an article, Why do the position of the buildings shift month-to-month?
Planet’s Building Detection leverages our monthly Basemap product to segment buildings. Due to image variability – sun angle, registration issues, etc – the registration position of our basemaps ma...
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Sara Safavi created an article, Why does the same building look different sizes month-to-month?
Planet’s Building Detection leverages our monthly Basemap product to segment buildings. Due to image variability – sun angle, registration issues, etc – certain buildings may look different sizes m...
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Sara Safavi created an article, What is the smallest size building that can be detected?
Planet can detect buildings greater than 10 m (~3 pixels). We define a building as any structure that a person can stand beneath, thus structures such as tents would be detected. Our building detec...
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Sara Safavi created an article, Road Detection Limitations and Variability
Planet Road Detection products are generated from Planet Mosaics. Due to variations, gaps, or inconsistencies in the underlying imagery, some portions of roads may not be detected in all areas.Dete...
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Sara Safavi created an article, Why do the position of the roads occasionally shift month-to-month?
Planet’s Road Detection leverages our monthly Basemap product to extract roads. Due to image variability – cloud cover, sun angle, registration issues, etc – the registration of our basemaps may sh...
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Sara Safavi created an article, Why does the same road look different sizes month-to-month?
Planet’s Road Detection leverages our monthly Basemap product to extract roads. Due to image variability – cloud cover, sun angle, registration issues, etc – certain roads may look different month ...
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Sara Safavi created an article, What is the smallest size road that can be detected?
Planet can detect roads greater than 10 m (~3 pixels). We define a road as anything that a vehicle would be able to drive on. Road Detection performs best in fully developed or undeveloped urban ar...
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Sara Safavi created an article, How do I get access to the source imagery (scenes for vessels and source quads for roads and buildings)?
For Vessel Detection, within each feature collection, there are links to the Planet Data API to get source imagery. Use the activate link to download the source imagery. For Road Detection and Buil...
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Sara Safavi created an article, How Do I Interpret the “Score” Surfaced in Object-Detection Based Analytic Feeds?
Each detection comes with a “confidence score,” which is an indication of how likely it is that the detection is accurate. Scores range from 0.3 to 1, with 1 being the highest likelihood that the d...
