Image Blending Techniques and Their Application in Underwater Mosaicing Ricard Prados

ISBN: 9783319055572

Published: April 17th 2014

Paperback

107 pages


Description

Image Blending Techniques and Their Application in Underwater Mosaicing  by  Ricard Prados

Image Blending Techniques and Their Application in Underwater Mosaicing by Ricard Prados
April 17th 2014 | Paperback | PDF, EPUB, FB2, DjVu, AUDIO, mp3, ZIP | 107 pages | ISBN: 9783319055572 | 6.76 Mb

This work proposes strategies and solutions to tackle the problem of building photo-mosaics of very large underwater optical surveys, presenting contributions to the image preprocessing, enhancing and blending steps, and resulting in an improvedMoreThis work proposes strategies and solutions to tackle the problem of building photo-mosaics of very large underwater optical surveys, presenting contributions to the image preprocessing, enhancing and blending steps, and resulting in an improved visual quality of the final photo-mosaic.

The text opens with a comprehensive review of mosaicing and blending techniques, before proposing an approach for large scale underwater image mosaicing and blending. In the image preprocessing step, a depth dependent illumination compensation function is used to solve the non-uniform illumination appearance due to light attenuation.

For image enhancement, the image contrast variability due to different acquisition altitudes is compensated using an adaptive contrast enhancement based on an image quality reference selected through a total variation criterion. In the blending step, a graph-cut strategy operating in the image gradient domain over the overlapping regions is suggested. Next, an out-of-core blending strategy for very large scale photo-mosaics is presented and tested on real data. Finally, the performance of the approach is evaluated and compared with other approaches.



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