Edge enhanced halftoning based on threshold modulation and adaptiveerror diffusion filter
碩士 === 國立臺灣科技大學 === 資訊工程系 === 97 === This thesis presents a gradient--based adaptive error diffusion method with edge enhancement effect while preserving the smoothness effect. The proposed method not only can modulate the threshold in halftoning dynamically but also can determine the weights of the...
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ndltd-TW-097NTUS53920202016-05-02T04:11:27Z http://ndltd.ncl.edu.tw/handle/47959619336724374583 Edge enhanced halftoning based on threshold modulation and adaptiveerror diffusion filter 植基於門檻值調整及動態誤差擴散係數的邊緣補強半色調演算法 Wei-ling Hsu 許維凌 碩士 國立臺灣科技大學 資訊工程系 97 This thesis presents a gradient--based adaptive error diffusion method with edge enhancement effect while preserving the smoothness effect. The proposed method not only can modulate the threshold in halftoning dynamically but also can determine the weights of the error diffusion filter adaptively to diffuse the quantization error to neighboring pixels properly. Under six testing images, experimental results demonstrate that our proposed new error diffusion method has a good compromise between the edge enhancement effect in the halftone image and the image quality effect in the corresponding inverse halftone image when compared to the methods by Floyd--Steinberg, Eschbach and Knox, Hwang et al., Li, and Feng et al., but it has some execution-time degradation. Chyou-hwa Chen Kuo-liang Chung 陳秋華 鍾國亮 2009 學位論文 ; thesis 27 en_US |
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碩士 === 國立臺灣科技大學 === 資訊工程系 === 97 === This thesis presents a gradient--based adaptive error diffusion
method with edge enhancement effect while preserving the smoothness
effect. The proposed method not only can modulate the threshold in
halftoning dynamically but also can determine the weights of the
error diffusion filter adaptively to diffuse the quantization error
to neighboring pixels properly. Under six testing images,
experimental results demonstrate that our proposed new error
diffusion method has a good compromise between the edge enhancement
effect in the halftone image and the image quality effect in the
corresponding inverse halftone image when compared to the methods by
Floyd--Steinberg, Eschbach and Knox, Hwang et al., Li, and
Feng et al., but it has some execution-time degradation.
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Chyou-hwa Chen |
author_facet |
Chyou-hwa Chen Wei-ling Hsu 許維凌 |
author |
Wei-ling Hsu 許維凌 |
spellingShingle |
Wei-ling Hsu 許維凌 Edge enhanced halftoning based on threshold modulation and adaptiveerror diffusion filter |
author_sort |
Wei-ling Hsu |
title |
Edge enhanced halftoning based on threshold modulation and adaptiveerror diffusion filter |
title_short |
Edge enhanced halftoning based on threshold modulation and adaptiveerror diffusion filter |
title_full |
Edge enhanced halftoning based on threshold modulation and adaptiveerror diffusion filter |
title_fullStr |
Edge enhanced halftoning based on threshold modulation and adaptiveerror diffusion filter |
title_full_unstemmed |
Edge enhanced halftoning based on threshold modulation and adaptiveerror diffusion filter |
title_sort |
edge enhanced halftoning based on threshold modulation and adaptiveerror diffusion filter |
publishDate |
2009 |
url |
http://ndltd.ncl.edu.tw/handle/47959619336724374583 |
work_keys_str_mv |
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