NDLI: Vectorization of constant-time gray-scale morphological processing algorithm using AltiVec

Content Provider	IEEE Xplore Digital Library
Author	Saran, R. Sarje, A.K.
Copyright Year	2011
Description	Author affiliation: Department of Electronics and Computer Engineering, Indian Institute of Technology, Roorkee, 247667, India (Saran, R.; Sarje, A.K.)
Abstract	Mathematical morphology is widely used in the area of signal and image analysis. It has enormous applications in detection of weak targets, object recognition and feature extraction, edge detection, image enhancement and many more. However, its use has long been hampered by its algorithmic complexity as the size of the structuring element or image grows. With the trend toward larger images and proportionally larger structuring element, the need for a fast and more efficient morphological processing algorithms become pressing. The performance of morphological processing algorithm can be speedup using AltiVec vetor processing unit. But the AltiVec programmers are frequently disappointed to discover that their AltiVec code is not much faster than their pre-existing scalar code. In some cases it may even be slower. In this correspondence, a new, simple yet much faster vectorized algorithm using AltiVec exhibiting constant-time complexity is described and analyzed. It is compared against the scalar version of the algorithm and other implementations. The proposed vectorized constant-time gray-scale morphological processing algorithm using AltiVec outperforms the 2-D naïve implementation, IXLib-AV library based implementation and the scalar version of constant-time morphological processing algorithm. It also exhibits the run time complexity independent of size of structuring element.
Starting Page	1
Ending Page	5
File Size	491297
Page Count	5
File Format	PDF
ISBN	9781612840901
e-ISBN	9781612840918
DOI	10.1109/NCC.2011.5734721
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-01-28
Publisher Place	India
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Algorithm design and analysis AltiVec PowerPC Vectorized algorithm Gray-scale VHGW algorithm Complexity theory Gray-scale morphology Constant-time Morphology Signal processing algorithms Filtering algorithms Pixel
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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