大家都知道，CMOS的噪聲有讀出噪聲，暗電流噪聲，固定模式噪聲等，那么請問這些噪聲如果用數(shù)學(xué)模型來解釋的話是按照什么來分布的呢？比如說，讀出噪聲好像是服從高斯分布的。

你可以看看噪聲的說明，關(guān)于固定格式噪聲，熱噪聲等等的公式，自然知道它的分布規(guī)律和模型！ JWb +  
大部分的噪聲最后反應(yīng)都在圖像上，這是從圖像上我們常規(guī)的總結(jié)圖像噪聲的一些資料：
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Gaussian noise QY;(Ny/(y  
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Main article: Gaussian noise ?#z$(upQ  
Principal sources of Gaussian noise in digital images arise during acquisition e.g. sensor noise caused by poor illumination and/or high temperature, and/or transmission e.g. electronic circuit noise.[2] *V2;ds.~  
A typical model of image noise is Gaussian, additive, independent at each pixel, and independent of the signal intensity, caused primarily by Johnson–Nyquist noise (thermal noise), including that which comes from the reset noise of capacitors ("kTC noise").[3] Amplifier noise is a major part of the "read noise" of an image sensor, that is, of the constant noise level in dark areas of the image.[4] In color cameras where more amplification is used in the blue color channel than in the green or red channel, there can be more noise in the blue channel.[5] At higher exposures, however, image sensor noise is dominated by shot noise, which is not Gaussian and not independent of signal intensity. `58% 邢台县| 衡东县| 清流县| 囊谦县| 周口市| 稷山县| 郧西县| 三门峡市| 灵寿县| 荔浦县| 屯门区| 宜兰县| 三门县| 德惠市| 荃湾区| 尼勒克县| 舟山市| 津南区| 崇义县| 津市市| 桃园县| 安溪县| 克拉玛依市| 沙坪坝区| 广丰县| 千阳县| 梨树县| 达孜县| 天祝| 固镇县| 禹城市| 夹江县| 板桥市| 安平县| 布拖县| 泰兴市| 东港市| 通许县| 枣阳市| 宣武区| 丰原市|