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一、成像原理

车载摄像头模组成像基于凸透镜成像原理，通过镜头（Lens)将景物反射的光线投射至图像传感器(Sensor）的像平面，经光电转换、模数转换及信号处理后生成图像。</description>
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        <title>yanding:成像基础知识:成像系统:系统构造及功能:相机显示器核心参数</title>
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        <description>相机显示器参数解析：看懂屏幕的硬指标

相机显示器是相机的核心交互窗口，承担实时取景、画面合成、拍摄回看、图像评估等关键功能。不同品牌、型号的相机，在屏幕设计上的差异，直接决定拍摄体验与画面判断的准确性。$$
\tan\left(\frac{\alpha}{2}\right) = \frac{\text{点距}(d/2)}{\text{观察距离}(A)}\tag{1}
$$$\alpha = 1$$1/60^\circ$$A = 300\ \text{mm}$$a = 2 \times A \times \tan(\alpha/2)$$a = 2 \times 300\ \text{mm} \times \tan(1/120^\circ) \approx 0.09\ \text{mm}$$25.4\ \text{mm} \div 0.09\ \text{mm} \approx \mathbf{282\ \text{PPI}}$$\ge$…</description>
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        <title>yanding:成像基础知识:成像系统:系统构造及功能:自动曝光_ae</title>
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正确的曝光能够让图片看起来更真实与舒适，而曝光也是影响后续图像处理的第一步也是至关重要的一步。常见控制曝光的的三项参数为曝光时间，感光度（ISO），光圈。而光圈作为控制曝光量的三种常见手段之一，因为在手机上体积受限鲜有人提及，但近些年随着人们认知的提升与技术进步，同时也因为光圈同时影响着景深，有越来越多的旗舰机型做到了主摄可变光圈。这三种手段同时出现在了手机影像系统当中，用于控制曝光与景深。…</description>
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