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首页> 外文期刊>Radiological physics and technology >Visual assessment method of angular performance in medical liquid-crystal displays by use of the ANG test pattern: effect of ambient illuminance and effectiveness of modified scoring.
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Visual assessment method of angular performance in medical liquid-crystal displays by use of the ANG test pattern: effect of ambient illuminance and effectiveness of modified scoring.

机译：使用ANG测试图案的可视化评估医疗液晶显示器角度性能的方法：环境照度的影响和修正评分的有效性。

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摘要

A visual assessment method of the angular performance in medical liquid-crystal displays (LCDs) by use of the "ANG test pattern" was proposed by Badano and the International Electrotechnical Commission. Our goals were to examine the effect of ambient illuminance on the visual assessment, and to investigate whether our modified visual assessment (with the ANG test pattern) can be used instead of the conventional assessment based on luminance measurements. As the ambient illuminance increased, the original scores obtained with the visual assessment decreased. The modified score of the visual assessment was in reasonable agreement with the results of the luminance-based assessment. We conclude that the visual assessment with the ANG test pattern should be performed in a room with constant ambient illuminance, and the modified visual assessment could have the potential to be used instead of the luminance-based assessment for quality assurance of medical LCDs.
机译：Badano和国际电工委员会提出了一种使用“ ANG测试图案”的医用液晶显示器（LCD）的角度性能的视觉评估方法。我们的目标是检查环境照度对视觉评估的影响，并调查是否可以使用经过修改的视觉评估（带有ANG测试图案）代替基于亮度测量的常规评估。随着环境照度的增加，通过视觉评估获得的原始分数会降低。视觉评估的修改分数与基于亮度的评估的结果合理吻合。我们得出的结论是，应在具有恒定环境照度的房间中执行带有ANG测试图案的视觉评估，并且修改后的视觉评估可以代替基于亮度的评估用于医疗LCD的质量保证。

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