書誌事項
- タイトル別名
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- Influence of Angle-measurement Error on Pre-sampled MTF and Proposal of an Optimal Technique of Angle Measurement
- カクド ケイソク ゴサ ガ presampled MTF エ オヨボス エイキョウ ノ ケンショウ ト カクド ケイソク ノ サイテキ シュホウ ノ テイアン
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説明
The presampled modulation transfer function (MTF) is recognized as the established metric for characterizing the resolution performance of a digital imaging system. In the past, the three general approaches for assessing the presampled MTF were using the angulated slit, angulated edge, and angulated square-wave test pattern all of which are tilted slightly against the column direction of the detector. In all methods, it is important to determine the exact angle of the respective test devices. In this study, we examined the influence of angle-measurement error in three test devices and the optimal technique of angle measurement. These results demonstrated that the influences of angle-measurement error in each method were equal. We also investigated three angle-measurement techniques using trace of objects, Hough transfer, and comparative observation of synthetic profiles. These results suggested that the technique using synthetic profiles was the most optimal technique in the angle measurement. Through use of the technique, angle-measurement error was completely overcome. This technique will contribute to improved accuracy of presampled MTF measurements.
収録刊行物
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- 日本放射線技術学会雑誌
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日本放射線技術学会雑誌 65 (2), 245-253, 2009
公益社団法人 日本放射線技術学会
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詳細情報 詳細情報について
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- CRID
- 1390282681339218304
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- NII論文ID
- 110007114523
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- NII書誌ID
- AN00197784
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- ISSN
- 18814883
- 03694305
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- NDL書誌ID
- 10191647
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可