Search

Your search keyword '"IMAGE processing"' showing total 44 results
Start Over Descriptor "IMAGE processing" Journal journal of real-time image processing Publisher springer berlin heidelberg
44 results on '"IMAGE processing"'

40. Journal of Real-Time Image Processing: third issue of volume 17

Author

Matthias F. Carlsohn and Nasser Kehtarnavaz

Subjects
Computer graphics, Editorial, Computer science, Computer graphics (images), Pattern recognition (psychology), Multimedia information systems, Image processing, Information Systems, Volume (compression)
Published
2020

41. Real-time color image segmentation based on mean shift algorithm using an FPGA

Author

Tsutomu Maruyama and Dang Ba Trieu

Subjects
Segmentation-based object categorization, business.industry, Computer science, ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION, Scale-space segmentation, Image processing, Image segmentation, Non-local means, Minimum spanning tree-based segmentation, Computer vision, Mean-shift, Artificial intelligence, Range segmentation, business, Information Systems
Abstract

Image segmentation is one of the most important tasks in the image processing, and mean shift algorithm is often used for color image segmentation because of its high quality. The computational cost of the mean shift algorithm, however, is high, and it is difficult to realize its real time processing on microprocessors, though many techniques for reducing the cost have been researched. In this paper, we describe an FPGA system for the image segmentation based on the mean shift algorithm. In the image segmentation based on the mean shift algorithm, the image is once over-segmented, and then the small regions are merged considering the similarity between the over-segmented regions to obtain better segmentation. In our system, the mean shift filter is accelerated using a cache memory which can access to all pixels in a w s × w s pixel window at arbitrary position. This cache memory allows us to process w s × w s pixels in parallel every clock cycle. The region merging is also accelerated by not strictly managing the list structures used for the merging. This loose management causes the redundant and out-of-date data into the list structures, but it makes the pointer dereferences unnecessary, and the overhead by those data can be hidden by pipeline processing. The performance for 768 × 512 pixel images is fast enough for real-time applications.

Published
2015

Catalog

Books, media, physical & digital resources
See catalog results