Historical comparator
The Historical Territory Comparator viewer allows you to view aerial images from 1945 to the present day and compare them, either by moving them in parallel or in continuous mode.
The Historical Comparator Viewer of Catalonia, developed by the ICGC, is a tool that allows you to compare images of the Catalan territory from different years, from 1945 to the present, which facilitates the analysis of geographical and urban evolution.
This viewer is aimed at researchers, urban planners, historians, students and the general public interested in the evolution of the Catalan territory over time.
The viewer covers the entire Catalan territory, but the availability of images may vary depending on the year and the area, since for some intervals of years images of the entire territory are not available.
Technical data
Historical orthophotomaps produced by the ICGC from flights since 1945 are used.
Features
- Comparison of two images corresponding to different dates, with simultaneous displacement of the two images.
- Comparison of two images, with scanning.
- Creation of animated gifs that show the evolution of a specific area over time.
- Download of the image that is on the screen.
- Creation of links to share specific visualizations and HTML code (iframe) to embed the tool in other web pages.
Viewer