High-performance computing in image registration

Michele Zanin; Fabio Remondino; Mauro Dalla Mura

doi:10.1117/12.981177

13 November 2012 High-performance computing in image registration

Michele Zanin, Fabio Remondino, Mauro Dalla Mura

Proceedings Volume 8539, High-Performance Computing in Remote Sensing II; 853902 (2012) https://doi.org/10.1117/12.981177
Event: SPIE Remote Sensing, 2012, Edinburgh, United Kingdom

Abstract

Thanks to the recent technological advances, a large variety of image data is at our disposal with variable geometric, radiometric and temporal resolution. In many applications the processing of such images needs high performance computing techniques in order to deliver timely responses e.g. for rapid decisions or real-time actions. Thus, parallel or distributed computing methods, Digital Signal Processor (DSP) architectures, Graphical Processing Unit (GPU) programming and Field-Programmable Gate Array (FPGA) devices have become essential tools for the challenging issue of processing large amount of geo-data. The article focuses on the processing and registration of large datasets of terrestrial and aerial images for 3D reconstruction, diagnostic purposes and monitoring of the environment. For the image alignment procedure, sets of corresponding feature points need to be automatically extracted in order to successively compute the geometric transformation that aligns the data. The feature extraction and matching are ones of the most computationally demanding operations in the processing chain thus, a great degree of automation and speed is mandatory. The details of the implemented operations (named LARES) exploiting parallel architectures and GPU are thus presented. The innovative aspects of the implementation are (i) the effectiveness on a large variety of unorganized and complex datasets, (ii) capability to work with high-resolution images and (iii) the speed of the computations. Examples and comparisons with standard CPU processing are also reported and commented.

Citation Download Citation

Michele Zanin, Fabio Remondino, and Mauro Dalla Mura "High-performance computing in image registration", Proc. SPIE 8539, High-Performance Computing in Remote Sensing II, 853902 (13 November 2012); https://doi.org/10.1117/12.981177

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