Image Processing

Building time-lapse imagery with Google Earth Engine

31st October 201720th March 2019
blog

If you have an hour (or 3) to spare then there are certainly worse things to do than to investigate the last 30 or so years of time-lapsed imagery on Google Earth Engine Timelapse. It can make for uncomfortable viewing as ice retreats or urban areas expand at a phenomenal rate. It can inform you;… Read More »

Raspberry Pi Zero processing images

15th July 2017
blog

The Raspberry Pi Zero is great… you can run a GIS on it! I wrote about setting it up via usb on my laptop six months ago. You can revisit it if you like 🙂 http://www.acgeospatial.co.uk/blog/qgis-and-raspberry-pi-zero/ You can also run GDAL, OpenCV & scikit-learn. Let’s take a look at some examples. First off I ran… Read More »

Contrast Limited Adaptive Histogram Equalization (CLAHE) with Sentinel 2a

11th June 2017
blog

This week I have been thinking about image stretching. I want to start with a quote taken from the concluding remarks of Image Processing and GIS for Remote Sensing. Image Processing can never increase the information provided in the original image data, but the use of appropriate image processing can improve visualisation, comprehension and analysis… Read More »