V.X線撮影系への情報理論の適用 : 第1部基礎理論(第1回画像部会講演)

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タイトル別名
  • APPLICATION OF INFORMATION THEORY TO RADIOGRAPHIC SYSTEMS : PART 1. BASIC CONCEPT
  • X線撮影系への情報理論の適用-1-基礎理論
  • Xセン サツエイケイ エ ノ ジョウホウ リロン ノ テキヨウ 1 キソ リロ

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The information theory of one dimensional discrete signals and continuous signals is explained, to introduce the concept of information capacity. Combining the sampling theorem, and the concepts of the random noise and the Gaussian noise, the fundamental formula of the information capacity of isotropic two-dimensional signals is given. It is emphasized that the information capacity is a new quantity to express the quality of radiographic systems synthetically ; the contrast, the sharpness, and the granularity being composed. The object spectra can be also composed in the information capacities, by which we can select the best system appropriate for the object.

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