GPU based techniques for deep image merging
| Autor: | Geoff Leach, Jesse Archer, Ron van Schyndel |
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| Rok vydání: | 2018 |
| Předmět: |
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deep image Memory hierarchy Computer science GPU 020207 software engineering 02 engineering and technology Linked list Computer Graphics and Computer-Aided Design lcsh:QA75.5-76.95 Rendering (computer graphics) Computer graphics Artificial Intelligence Computer graphics (images) Compositing 0202 electrical engineering electronic engineering information engineering 020201 artificial intelligence & image processing Pairwise comparison composite lcsh:Electronic computers. Computer science Computer Vision and Pattern Recognition Depth order Merge (version control) performance |
| Zdroj: | Computational Visual Media, Vol 4, Iss 3, Pp 277-285 (2018) SIGGRAPH Asia Technical Briefs |
| ISSN: | 2096-0662 2096-0433 |
| DOI: | 10.1007/s41095-018-0118-8 |
| Popis: | Deep images store multiple fragments perpixel, each of which includes colour and depth, unlike traditional 2D flat images which store only a single colour value and possibly a depth value. Recently, deep images have found use in an increasing number of applications, including ones using transparency and compositing. A step in compositing deep images requires merging per-pixel fragment lists in depth order; little work has so far been presented on fast approaches. This paper explores GPU based merging of deep images using different memory layouts for fragment lists: linked lists, linearised arrays, and interleaved arrays. We also report performance improvements using techniques which leverage GPU memory hierarchy by processing blocks of fragment data using fast registers, following similar techniques used to improve performance of transparency rendering. We report results for compositing from two deep images or saving the resulting deep image before compositing, as well as for an iterated pairwise merge of multiple deep images. Our results show a 2 to 6 fold improvement by combining efficient memory layout with fast register based merging. |
| Databáze: | OpenAIRE |
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