A Hybrid Model for Sprite Generation

碩士 === 國立成功大學 === 電機工程學系碩博士班 === 90 === A novel sprite generator, base on Yan Lu’s work in MPEG-4 Optimized Model (MPEG-4 OM), is presented in the thesis. Three improvements are included in the generator: fast image warping, hybrid model global motion estimation (GME) and adaptive switching. To acc...

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Main Authors: Cheng-Jan Chi, 吉正然
Other Authors: Chin-Hsing Chen
Format: Others
Language:en_US
Published: 2002
Online Access:http://ndltd.ncl.edu.tw/handle/pkej6s
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spelling ndltd-TW-090NCKU54421362018-06-25T06:05:08Z http://ndltd.ncl.edu.tw/handle/pkej6s A Hybrid Model for Sprite Generation 使用混成模式的Sprite產生器 Cheng-Jan Chi 吉正然 碩士 國立成功大學 電機工程學系碩博士班 90 A novel sprite generator, base on Yan Lu’s work in MPEG-4 Optimized Model (MPEG-4 OM), is presented in the thesis. Three improvements are included in the generator: fast image warping, hybrid model global motion estimation (GME) and adaptive switching. To accelerate the speed of image warping, a simpler interpolation kernel is used. The bilinear interpolation kernel is replaced by nearest neighborhood (NN) kernel. Hybrid model GME is used to enhance the image quality and estimation accuracy. With hybrid model GME, the sprite generated with NN kernel has equal or even better quality compared with those generated with Yan Lu’s method. The adaptive switching chooses the proper GME model frame by frame. It saves the computation time and the transmission data rate. Four test sequences are used to test the new generator. Two of the sequences are reversed frame by frame. The experimental results show that the image quality is improved more if the camera operations are more complex and faster. The computation speed is 1.7 times faster or equal to the OM generator. Chin-Hsing Chen 陳進興 2002 學位論文 ; thesis 82 en_US
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language en_US
format Others
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description 碩士 === 國立成功大學 === 電機工程學系碩博士班 === 90 === A novel sprite generator, base on Yan Lu’s work in MPEG-4 Optimized Model (MPEG-4 OM), is presented in the thesis. Three improvements are included in the generator: fast image warping, hybrid model global motion estimation (GME) and adaptive switching. To accelerate the speed of image warping, a simpler interpolation kernel is used. The bilinear interpolation kernel is replaced by nearest neighborhood (NN) kernel. Hybrid model GME is used to enhance the image quality and estimation accuracy. With hybrid model GME, the sprite generated with NN kernel has equal or even better quality compared with those generated with Yan Lu’s method. The adaptive switching chooses the proper GME model frame by frame. It saves the computation time and the transmission data rate. Four test sequences are used to test the new generator. Two of the sequences are reversed frame by frame. The experimental results show that the image quality is improved more if the camera operations are more complex and faster. The computation speed is 1.7 times faster or equal to the OM generator.
author2 Chin-Hsing Chen
author_facet Chin-Hsing Chen
Cheng-Jan Chi
吉正然
author Cheng-Jan Chi
吉正然
spellingShingle Cheng-Jan Chi
吉正然
A Hybrid Model for Sprite Generation
author_sort Cheng-Jan Chi
title A Hybrid Model for Sprite Generation
title_short A Hybrid Model for Sprite Generation
title_full A Hybrid Model for Sprite Generation
title_fullStr A Hybrid Model for Sprite Generation
title_full_unstemmed A Hybrid Model for Sprite Generation
title_sort hybrid model for sprite generation
publishDate 2002
url http://ndltd.ncl.edu.tw/handle/pkej6s
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