Presentation 2008/10/2
Comparison in Performance between Improved Conventional Methods and Cooperative Vision-Model-Based Method in Sharpness Evaluation
Tomohiro FUJITA, Toshikazu MATSUI,
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Abstract(in English) It has already been shown that the sharpness evaluation method based on the cooperative human vision model is superior in performance to conventional methods. In order to clarify factors of the vision-model-based method's high performance, the conventional metrics are improved so that they reproduce fundamental characteristics on sharpness in the same way as the vision-model-based metric, and then the performance of the improved metrics is compared with that of the vision-model-based metric. Consequently, the following results were obtained: (1) the improvement was achieved by utilizing the Fourier transform of imaging system's output images instead of the imaging system's MTF; (2) the vision-model-based metric was superior in evaluation performance to the improved metrics. Considering that one large difference between the two kinds of metrics consists in the existence of the image observing mechanism, these results suggest that the model's image observing mechanism can be a factor of the vision-model-based method's high performance.
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Keyword(in English) Sharpness / Objective metric / Evaluation performance / Cooperative human vision model / Image observation
Paper # EID2008-30
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Committee EID
Conference Date 2008/10/2(1days)
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Language JPN
Title (in Japanese) (See Japanese page)
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Title (in English) Comparison in Performance between Improved Conventional Methods and Cooperative Vision-Model-Based Method in Sharpness Evaluation
Sub Title (in English)
Keyword(1) Sharpness
Keyword(2) Objective metric
Keyword(3) Evaluation performance
Keyword(4) Cooperative human vision model
Keyword(5) Image observation
1st Author's Name Tomohiro FUJITA
1st Author's Affiliation Graduate School of Engineering, Gunma University()
2nd Author's Name Toshikazu MATSUI
2nd Author's Affiliation Graduate School of Engineering, Gunma University
Date 2008/10/2
Paper # EID2008-30
Volume (vol) vol.108
Number (no) 235
Page pp.pp.-
#Pages 4
Date of Issue