Individual differences in contrast sensitivity functions and the image-quality evaluation

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  • コントラスト感度関数の個人差と画質評価
  • コントラスト カンド カンスウ ノ コジンサ ト ガシツ ヒョウカ

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Description

The contrast sensitivity function(CSF)of a human visual system is the basic characteristic of a pattern recognition mechanism, and it is thought that it influences on image-quality evaluation. In the previous studey, we obtained the result that objective image-quality evaluation(peak SNR, PSNR)does not necessarily correspond with subjective image-quality evaluation. Furthermore large individual differences were observed in the subjective evaluation. We introduced the objective image quality evaluation considering human spacial frequency characteristic, however only one kind of CSF was used. Then, this research aims at investigating the relation between the individual difference of CSF and that found in the subjective image-quality evaluation. Although a large individual difference was found in the CSFs of 16 observers, it can not explain the individual difference in the subjective image-quality evaluation.

Journal

  • ITE Technical Report

    ITE Technical Report 25.64 (0), 17-21, 2001

    The Institute of Image Information and Television Engineers

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