Appendix 8. Photography and Videography

From PRAGMO
Jump to navigation Jump to search

1. Fixed point photography

This is a very simple method whereby photographs are taken prior to any restoration work being carried out at a number of locations along the river upstream of the proposed works, within the reach or reaches where restoration work is to be carried out in the reach downstream of the lower limit of the restoration work.

View Fixed Point Photography Factsheet

Ideally at least four sets of photographs should be taken, one before any works have been carried our (pre works), one when the restoration work is under construction (during works), one immediately after the works are completed (as built) and one at least a year and up to three years later (post works) as can be seen in Figure A8.1.

Figure A8.2 shows a map detailing the locations of the fixed-point photography, the location for the photograph should ideally be fixed using a GPS or at least accurately located on a large scale map (i.e.1:10,000 to 1:1000). It clearly shows how the installation of wood deflectors infilled between with brushwood and pre planted coir mats has allowed marginal vegetation to grow up and narrowed the river. The last image shows a map of a set of four photographs for a fixed-point photography location.

2. 360° photography and videography

A 360⁰ camera captures a panoramic view of a landscape which is useful for illustrating a site, a specific feature, or a significant pressure. These images can be shared with a range of stakeholders as a communication tool, as well as with experts who can then provide better informed remote advice with a 360° image.

Cameras range from budget prices of £100 - £200 to over £1,000 for high-end equipment. The higher-end products have features such as video and 4k recording which is particularly useful in fluvial environments as the flow types and energy of a river are more easily interpreted.

How to use a 360 camera

Uploading to Google Street View

3. Drone surveys

Drones have become a powerful tool for monitoring rivers as they can provide a different view of the landscape and reveal changes that are difficult to see at ground level. Drones can be used to take photos or videos, and pre-programmed flight paths allow them to be used for fixed-point photography and videography. With more advanced equipment it is possible to use drones for photogrammetry with outputs such as 3D site maps.