Name
Title | ||
|---|---|---|
Linear colour correction for multiple illumination changes and non-overlapping cameras |
Abstract | ||
|---|---|---|
Many image processing methods, such as techniques for people re-identification, assume photometric constancy between different images. This study addresses the correction of photometric variations based upon changes in background areas to correct foreground areas. The authors assume a multiple light source model where all light sources can have different colours and will change over time. In training mode, the authors learn per-location relations between foreground and background colour intensities. In correction mode, the authors apply a double linear correction model based on learned relations. This double linear correction includes a dynamic local illumination correction mapping as well as an inter-camera mapping. The authors evaluate their illumination correction by computing the similarity between two images based on the earth mover's distance. The authors compare the results to a representative auto-exposure algorithm found in the recent literature plus a colour correction one based on the inverse-intensity chromaticity. Especially in complex scenarios the authors' method outperforms these state-of-the-art algorithms. |
Year | DOI | Venue |
|---|---|---|
2015 | 10.1049/iet-ipr.2014.0149 | Image Processing, IET |
Keywords | Field | DocType |
image colour analysis,image retrieval,image sensors,lighting,auto-exposure algorithm,background colour intensities,double linear correction model,dynamic local illumination correction mapping,foreground colour intensities,image processing methods,intercamera mapping,inverse-intensity chromaticity,linear colour correction,multiple illumination changes,nonoverlapping cameras,object retrieval,people reidentification,photometric constancy,photometric variation correction,similarity computation | Computer vision,Image sensor,Pattern recognition,Photometry (optics),Image retrieval,Image processing,Chromaticity,Color correction,Artificial intelligence,Local illumination,Light source,Mathematics | Journal |
Volume | Issue | ISSN |
9 | 4 | 1751-9659 |
Citations | PageRank | References |
0 | 0.34 | 16 |
Authors | ||
4 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Juan Torres | 1 | 0 | 0.34 |
| Klamer Schutte | 2 | 173 | 18.26 |
| Henri Bouma | 3 | 50 | 6.88 |
| Menéndez, J.-M. | 4 | 0 | 0.34 |