PSOrthoTile

PlanetScope Ortho Tiles as 25 km x 25 km UTM tiles. This data set includes imagery from all PlanetScope sensors.

Products Overview¶

All Ortho Tile products are provided in GeoTIFF format. The ortho tile product GeoTIFFs are resampled at 3.125 meters, and projected in the UTM projection using the WGS84 datum. An alpha mask is provided as a binary color channel, and can be used to remove or hide low quality pixels near the periphery of a given scene. This mask compensates for effects due to vignetting, low SNR, or hot or cold pixels.

PlanetScope Ortho Tiles are based on a worldwide, fixed UTM grid system. The grid is defined in 24 km by 24 km tile centers, with 1 km of overlap (each tile has an additional 500 m overlap with adjacent tiles), resulting in 25 km by 25 km tiles.

For PlanetScope split-frame satellites, imagery is collected as a series of overlapping framed scenes from a single satellite in a single pass. These scenes are subsequently orthorectified and an ortho tile is then generated from a collection of consecutive scenes, typically 4 to 5.

The PlanetScope Ortho Tile products are radiometrically, sensor, and geometrically corrected and aligned to a cartographic map projection. The geometric correction uses fine DEMs with a post spacing of between 30 and 90 meters. GCPs are used in the creation of every image and the accuracy of the product will vary from region to region based on available GCPs.

Product band order:

• Band 1 = Blue
• Band 2 = Green
• Band 3 = Red
• Band 4 = Near-infrared (analytic products only)

Analytic 5B Product band order:

• Band 1 = Blue
• Band 2 = Green
• Band 3 = Red
• Band 4 = Red-Edge
• Band 5 = Near-infrared

Item Properties¶

Property Name	Description	Type
_permissions	Assets available for the item which the authenticated user has permission to download.	array
geometry	Geographic boundary of the item's footprint, formatted as a GeoJSON polygon.	json
id	Globally unique item identifier.	string
acquired	Timestamp that the item was captured.	datetime
anomalous_pixels	Percentage of pixels which may have errors. Represented spatially in the UDM.	double [0-100]
black_fill	The percentage of the item containing black fill.	double [0-100]
clear_confidence_percent	percentage value: per-pixel algorithmic confidence in 'clear' classification	int [0-100]
clear_percent	Percent of clear values in dataset. Clear values represents scene content areas (non-blackfilled) that are deemed to be not impacted by cloud, haze, shadow and/or snow.	int [0-100]
cloud_cover	Average ratio of cloud coverage.	double [0-100]
cloud_percent	Percent of cloud values in dataset. Cloud values represent scene content areas (non-blackfilled) that contain opaque clouds which prevent reliable interpretation of the land cover content.	int [0-100]
columns	Number of columns in the image.	integer
epsg_code	Ortho tile grid cell that the item is located in (not used if Scene).	integer
grid_cell	The grid cell identifier of the gridded item.	string
ground_control	Positional accuracy of the item. If the item has uncertain positional accuracy, this value will be false.	boolean
gsd	Ground sample distance - the distance between pixel centers as measured on the ground in meters.	double
heavy_haze_percent	Percent of heavy haze values in dataset. Heavy haze values represent scene content areas (non-blackfilled) that contain thin low altitude clouds, higher altitude cirrus clouds, soot and dust which allow fair recognition of land cover features, but not having reliable interpretation of the radiometry or surface reflectance.	int [0-100]
instrument	Name of the satellite instrument used to collect the image.	string
item_type	Name of the item type.	string
light_haze_percent	Percent of light haze values in dataset. Light haze values represent scene content areas (non-blackfilled) that contain thin low altitude clouds, higher altitude cirrus clouds, soot and dust which allow reliable recognition of land cover features, and have up to +/-10% uncertainty on commonly used indices (EVI and NDWI).	int [0-100]
origin_x	ULX coordinate of the extent of the data. The coordinate references the top left corner of the top left pixel.	double
origin_y	ULY coordinate of the extent of the data. The coordinate references the top left corner of the top left pixel.	double
pixel_resolution	Pixel resolution of the imagery in meters.	double
provider	Name of the item provider (e.g. “planetscope”, ”rapideye”).	string
published	Timestamp that the item was published to the Planet API.	datetime
publishing_stage	Stage of publishing for an item. PSOrthoTiles will be first published in "standard" stage and graduate to a "finalized" stage.	string
quality_category	Metric for image quality. To qualify for “standard” image quality an image must meet a variety of quality standards, for example: sun altitude greater than or equal to 10 degrees, off nadir view angle less than 20 degrees, and saturated pixels fewer than 20%. If the image does not meet these criteria it is considered “test” quality.	string
rows	Number of rows in the image.	integer
satellite_azimuth	Spacecraft off track pointing direction, in degrees (0-360)	float
satellite_id	Globally unique satellite identifier.	string
strip_id	The unique identifier of the image strip that the item came from.	string
sun_azimuth	The angle of the sun, as seen by the observer, measured clockwise from the north (0 - 360).	float
sun_elevation	The angle of the sun above the horizon (0 - 90).	double
updated	Timestamp that the item record was last updated.	datetime
usable_data	Percentage of pixels that are usable, subtracting cloud cover and black fill.	double [0-100]
view_angle	The satellite's across-track, off-nadir viewing angle. Positive numbers denote east, negative numbers denote west (-25 - +25).	double
visible_confidence_percent	Visible values represent the fraction of the scene content (excluding the portion of the image which contains blackfill) which is comprised of clear, light haze, shadow, snow/ice categories, and is given as a percentage ranging from zero to one hundred.	int [0-100]
visible_percent	Average of confidence percent for clear_percent, light_haze_percent, shadow_percent and snow_ice_percent	int [0-100]

Available Asset Types¶

Asset Name	Description
analytic	Radiometrically calibrated GeoTiff product suitable for analytic applications.
analytic_5b	Radiometrically calibrated GeoTiff product suitable for analytic applications. Has 5 analytic bands, including red-edge. Supported only for the PlanetScope PSB.SD instrument.
analytic_5b_xml	Analytic 5B asset XML metadata file. Supported only for the PlanetScope PSB.SD instrument.
analytic_dn	Non-radiometrically calibrated GeoTiff product suitable for analytic applications.
analytic_dn_xml	Analytic DN asset XML metadata file.
analytic_sr	Atmospherically corrected surface reflectance GeoTiff product.
analytic_xml	Analytic asset XML metadata file.
visual	Color-corrected GeoTiff product for visual applications.
visual_xml	Visual asset XML metadata file.
udm	Usable Data Mask - Usable data bit mask GeoTIFF for visual and analytic assets.
udm2	Usable Data Mask 2.0. Read more about this new asset here.

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