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noiseprofile describes the amount of noise in a raw image. specifically, this tag models the amount of signal-dependent photon (shot) noise and signal-independent sensor readout noise, two common sources of noise in raw images. the model assumes that the noise is white and spatially independent, ignoring fixed pattern effects and other sources of noise (e.g., pixel response non-uniformity, spatially-dependent thermal effects, etc.).
noiseprofile menerangkan sejumlah hingar dalam imej raw. secara spesifik, tag ini modelkan sejumlah hingar foton bebas-isyarat (tangkapan) dan hingar bacaan penderia bebas-isyarat, dua sumber umum bagi hingar di dalam imej raw. model menganggap hingar adalah putih dan bebas secara spatial, mengabaikan kesan corak tetap dan lan-lain sumber hingar (cth. piksel yang bertindakbalas terhadap ketidak-seragaman, kesan haba bebas-spatial, dan lain-lain).
