Abstract
Visibility and clarity of remotely sensed images acquired by consumer grade DSLR cameras, mounted on an unmanned aerial vehicle or a manned aircraft, are critical factors in obtaining accurate and detailed information from any area of interest. The presence of substantial haze, fog or gaseous smoke particles; caused, for example, by an active bushfire at the time of data capture, will dramatically reduce image visibility and quality. Although most modern hyperspectral imaging sensors are capable of capturing a large number of narrow range bands of the shortwave and thermal infrared spectral range, which have the potential to penetrate smoke and haze, the resulting images do not contain sufficient spatial detail to enable locating important objects or assist search and rescue or similar applications which require high resolution information. We introduce a new method for penetrating gaseous smoke without compromising spatial resolution using a single modified DSLR camera in conjunction with image processing techniques which effectively improves the visibility of objects in the captured images. This is achieved by modifying a DSLR camera and adding a custom optical filter to enable it to capture wavelengths from 480-1200nm (R, G and Near Infrared) instead of the standard RGB bands (400-700nm). With this modified camera mounted on an aircraft, images were acquired over an area polluted by gaseous smoke from an active bushfire. Processed data using our proposed method shows significant visibility improvements compared with other existing solutions.
Original language | English |
---|---|
Title of host publication | Fourth International Conference on Remote Sensing and Geoinformation of the Environment, RSCy 2016 |
Editors | Kyriacos Themistocleous, Diofantos G. Hadjimitsis, Silas Michaelides, Giorgos Papadavid |
Publisher | SPIE |
Pages | 96880Q-1-96880Q-7 |
Number of pages | 7 |
ISBN (Print) | 1628419237, 9781628419238 |
DOIs | |
Publication status | Published - Aug 2016 |
Event | 4th International Conference on Remote Sensing and Geoinformation of the Environment, RSCy 2016 - Paphos, Cyprus Duration: 4 Apr 2016 → 8 Apr 2016 |
Publication series
Name | Proceedings of SPIE - The International Society for Optical Engineering |
---|---|
Volume | 9688 |
ISSN (Print) | 0277-786X |
ISSN (Electronic) | 1996-756X |
Conference
Conference | 4th International Conference on Remote Sensing and Geoinformation of the Environment, RSCy 2016 |
---|---|
Country | Cyprus |
City | Paphos |
Period | 4/04/16 → 8/04/16 |
Keywords
- Bushfire mapping
- Light scattering
- Smoke penetration
- Visibility enhancement