Sentinel Downloader

Library and CLI tool for downloading satellite images from the sentinel-hub.com

Providing access to Sentinel Hub

Sentinel Downloader is automation tool for downloading imagery from sentinel-hub.com. You need to have account in order to access the data and provide access token (instance ID) to start using this tool. Instance ID can be found in your dashboard in Configuration Utility section.

Usage without installation

If you want to use this tool you can easily do it with published docker image:

$ docker pull zaitra/sentinel-downloader
$ docker run -it --rm -v <PATH_TO_IMAGES>:/tmp/images -v <PATH_TO_CONFIG_FILE>:/.sd.yaml -e SD_SENTINEL_INSTANCE_ID=<INSTANCE_ID> zaitra/sentinel-downloader bash -c "sentinel-downloader download -c /.sd.yaml"

• <PATH_TO_IMAGES> - directory where the images will be stored (absolute path on host)
• <PATH_TO_CONFIG_FILE> - absolute path on host to configuration file .sd.yaml
• <INSTANCE_ID> - access token to Sentinel Hub (instance ID)

Configuration

Example

debug: true
layers:
  - "TRUE-COLOR-S2-L1C"
times:
  -  ["2015-05-01", "2015-08-30"]
  -  ["2016-05-01", "2016-08-30"]
  -  ["2017-05-01", "2017-08-30"]
  -  ["2018-05-01", "2018-08-30"]
  -  ["2019-05-01", "2019-08-30"]

# area of interest. Coordinates representing top left x,y and right bottom x,y
bounding_box: [14.42, 50.42, 14.42, 50.42]

width: 42
height: 42

max_cloud_percentage: 0.42

images_dir: "/tmp/images/"

Here are the configuration options:

Option	Description	Required
debug	Provide debug logs. Default is False	No
layers	List of layers from sentinel-hub configuration	Yes
bounding_box	Bounding box location	Yes
times	Array of time ranges	Yes
width	Image width	Yes
height	Image height	Yes
max_cloud_percentage	Max cloud coverage. Default is 1	No
image_dir	Path to directory where images should be saved.	Yes

Docker

Installation

$ git clone https://github.com/zaitra/sentinel-downloader
$ cd sentinel-downloader
$ touch .sd.yaml  # configurarution file has to be in the root directory of this project
$ vim .sd.yaml  # edit as described in Configuration section
$ make build  # builds docker image

Usage

Run docker command

$ docker run -it --rm -v <PATH_TO_IMAGES>:/tmp/images -e SD_SENTINEL_INSTANCE_ID=<INSTANCE_ID> zaitra/sentinel-downloader:dev bash -c "sentinel-downloader download -c /src/.sd.yaml"

or use Makefile

$ make run-in-container INSTANCE_ID=<INSTANCE_ID> LOCAL_IMAGE_DIR=<PATH_TO_IMAGES> CONFIG_FILE=<PATH_TO_CONFIG_FILE>

Defaults are: <PATH_TO_IMAGES> = /tmp/images <PATH_TO_CONFIG_FILE> = $(PWD)/.sd.yaml <INSTANCE_ID> = exported Sentinel Instance Id into SD_SENTINEL_INSTANCE_ID env variable

CLI

Prepare environment

Add your instance ID to your environment.

$ echo "export SD_SENTINEL_INSTANCE_ID=<INSTANCE_ID>" >> .env
$ source .env

Installation

$ pip3 install git+https://github.com/zaitra/sentinel-downloader

Usage

sentinel-downloader download -c <PATH_TO_CONFIG_FILE>

Logging

The default logging level is INFO. If you want to enable DEBUG logs, create .env file with variable SD_DEBUG=1 and load it to your environment.

$ echo "export SD_DEBUG=1" >> .env
$ source .env

Since structlog is used for logging, you can have nice colorized output in the CLI. You just need to install colorama.

$ pip3 install colorama

You can also switch between JSON logs renderer good for logs management services (enabled by SD_JSON_LOGS=1) or console render.

$ echo "export SD_JSON_LOGS=1" >> .env

References

This tool uses official Sentinel hub python library.