In 2023, Metria carried out an assignment to ortho-correct selected satellite images and produce nationwide cloud-free mosaics for Sweden with either infrared or natural colors for the Saccess satellite image service.
The satellite images from Saccess are distinguished by the fact that they reproduce a much broader color spectrum, which makes it possible, among other things, to use the information in the images to distinguish different types of vegetation and the status of plant stands.
Satellite imagery for agriculture and forestry, climate analysisand spatial planning
The use of satellite imagery is primarily intended as a tool for studying the landscape changes that have occurred over five decades. The images provide a snapshot of the entire Swedish landscape in the summer of 2023 as seen from space, and are of great use in agriculture and forestry, climate and environmental analysis, and spatial planning, but also for the interested public.
The national satellite image archive, Saccess , contains satellite images of Sweden covering every decade from the 1970s onwards. Since 2007, it has been replenished annually with new nationwide datasets.
Metria's expertise in GIS and geodata
Metria is one of the few suppliers that possesses the knowledge and expertise required to carry out the assignment according to the requirements and within the set time frames.
Metria has long been an expert in GIS, real estate information and geographic data and can, with the help of satellite images, remote sensing, real estate information and market-leading map services, create a picture of both identified climate risks and identify opportunities to reduce climate impact.
By creating, analyzing, refining and visualizing geographic data, Metria contributes with valuable information to companies, municipalities and authorities. Geodata increases understanding of important social issues and often leads to smart and well-informed decisions for all types of activities.
Extensive processing and correction of satellite images
The assignment is based on the selection of suitable satellite imagery recorded during the 2023 vegetation season. As a rule, at least 150 satellite images are required to create mosaics with more than 98% cloud-free multispectral pixels. The satellite images were recorded by the Sentinel 2 satellites and have been processed, including ortho-correction and rectification. Areas with too much cloud or cloud shadow are removed and replaced with information from another satellite image of the same area, but recorded at a different time when it was not cloudy. Processing is also done to make the now cloud-free mosaics as homogeneous in color as possible.
All images can be downloaded free of charge.
Link to the service: https: //saccess.lantmateriet.se/ (new window)