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AN ASSESSMENT OF HIGH DYNAMIC RANGE LUMINANCE MEASUREMENTS WITH LED LIGHTING

机译:具有LED照明的高动态范围亮度测量评估

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This study investigates whether High Dynamic Range Imaging (HDRI) can accurately capture luminance values of a single LED chip. Two conventional methods of determining luminance (the use of a luminance meter with a close-up lens, and deriving luminance from illuminance measurements, source area and distance) of a single LED chip are compared to HDRI. The results of this research shows that HDRI using a Canon EOS 7D camera, fitted with 28-105 mm lens and a neutral density filter (with less than 1% transmittance) combined with Photosphere compares very well to a luminance value determined with goniophotometer measurements and calculations providing confidence in HDRI's ability to capture luminance values of a single LED chip.
机译:本研究调查了高动态范围成像(HDRI)是否可以精确地捕获单个LED芯片的亮度值。将单个LED芯片的亮度的两个确定亮度(使用亮度计的亮度计的使用和从照度测量的亮度导出亮度)进行比较。本研究的结果表明,使用佳能EOS 7D摄像头的HDRI配有28-105毫米镜头和中性密度过滤器(具有小于1%的透射率),与Photosphere组合得非常良好,与Goniophotometer测量测量确定的亮度值计算为HDRI捕获单个LED芯片的亮度值的能力提供信心。

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