Paper Abstract and Keywords |
Presentation |
2006-03-28 13:25
Speed-up of Affine Transformation Realized by Decomposing It into Two One-dimensional processes
-- Consideration Based on the Usage of a DSP with Parallel Datapaths -- Hiroshi Ohta, Ryo Ozaki (Okayama Univ. of Science), Hiroto Kagotani (Okayama Univ.), Reiji Hashimoto, Takuji Okamoto (Okayama Univ. of Science) |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
This paper describes a method of fast affine transformation for video images. A DSP with parallel datapaths and a single local memory for a data buffer is used. The affine transformation is carried out by decomposing it into two consecutive one dimensional processes; one for horizontal direction and the other for vertical. In order to speed up the transformation, a main memory (MM) and the local memory (LM) are structured to a ring buffer for frames of the video image and to a ring buffer for parts of a frame, respectively. It is desirable to select the number of datapaths so that the time required for transmission of a part of a frame between MM and LM becomes nearly equal to that for its interpolation by datapaths. Experimental results showed that the transformation speed in the proposed method was about five times faster than usual ones. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
Affine transformation / Video image / Parallel processing / DSP / / / / |
Reference Info. |
IEICE Tech. Rep., vol. 105, no. 689, IE2005-322, pp. 27-32, March 2006. |
Paper # |
IE2005-322 |
Date of Issue |
2006-03-21 (IE) |
ISSN |
Print edition: ISSN 0913-5685 |
Download PDF |
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Conference Information |
Committee |
IE |
Conference Date |
2006-03-28 - 2006-03-28 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Kikai-Shinko-Kaikan Bldg. |
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
Image Coding Systems, etc. |
Paper Information |
Registration To |
IE |
Conference Code |
2006-03-IE |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Speed-up of Affine Transformation Realized by Decomposing It into Two One-dimensional processes |
Sub Title (in English) |
Consideration Based on the Usage of a DSP with Parallel Datapaths |
Keyword(1) |
Affine transformation |
Keyword(2) |
Video image |
Keyword(3) |
Parallel processing |
Keyword(4) |
DSP |
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1st Author's Name |
Hiroshi Ohta |
1st Author's Affiliation |
Okayama University of Science (Okayama Univ. of Science) |
2nd Author's Name |
Ryo Ozaki |
2nd Author's Affiliation |
Okayama University of Science (Okayama Univ. of Science) |
3rd Author's Name |
Hiroto Kagotani |
3rd Author's Affiliation |
Okayama University (Okayama Univ.) |
4th Author's Name |
Reiji Hashimoto |
4th Author's Affiliation |
Okayama University of Science (Okayama Univ. of Science) |
5th Author's Name |
Takuji Okamoto |
5th Author's Affiliation |
Okayama University of Science (Okayama Univ. of Science) |
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Speaker |
Author-1 |
Date Time |
2006-03-28 13:25:00 |
Presentation Time |
25 minutes |
Registration for |
IE |
Paper # |
IE2005-322 |
Volume (vol) |
vol.105 |
Number (no) |
no.689 |
Page |
pp.27-32 |
#Pages |
6 |
Date of Issue |
2006-03-21 (IE) |