Explore Element 84's website to understand their perspective on the relationship between Zarr and Cloud-Optimized GeoTIFF (COG) formats in geospatial data. Additionally, identify two specific open-source projects or initiatives that Element 84 is actively involved with or contributes to.
Navigate to the 'Blog' section of the website. Locate and click on the blog post titled 'Is Zarr the new COG?'. Read the blog post to determine Element 84's stance on Zarr as a replacement or complement to COG. Navigate to the 'Projects' section of the website. Identify two distinct open-source projects or initiatives that Element 84 is involved with or contributes to. State Element 84's perspective on Zarr and COG, and list the two identified open-source projects.
Clearly state that Element 84 does not consider Zarr a direct replacement for COG, but rather complementary for different types of geospatial data (e.g., Zarr for n-dimensional data cubes, COG for rasters). List two distinct open-source projects that Element 84 is involved with or contributes to (e.g., STAC, FilmDrop Edge, Raster Vision).