From spectral sensitivities to noise characteristics
From spectral sensitivities to noise characteristics
复制标题
从光谱灵敏度到噪声特性
DOI：
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发表时间：
2007
期刊：
影响因子：
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通讯作者：
Hervé Hornung
中科院分区：
文献类型：
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作者：
J. Buzzi;F. Guichard;Hervé Hornung
For a given noise at the photosite level and a given output color space, the spectral sensitivities of a sensor constrain the color processing and therefore impact the level of noise in the output. In particular, this noise may be very different from the usually documented photosite noise. A key phenomenon is the appearance of strong correlations between channels which makes individual channel measures (including the classical signal-to-noise ratio, SNR) misleading. We evaluate existing chains and isolated sensors by several indicators including the previously developed color sensitivity. We finally apply this approach to the understanding of good spectral sensitivities by considering hypothetical spectral sensitivities and simulating their performances.
