https://wiki.yanding.com/ 2026-09-21T10:55:39+00:00 https://wiki.yanding.com/ https://wiki.yanding.com/lib/tpl/myconfluence/images/favicon.ico text/html 2026-09-08T02:09:07+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.yanding.com/doku.php?id=yanding:%E6%88%90%E5%83%8F%E8%B4%A8%E9%87%8F%E8%AF%84%E4%BB%B7:%E6%B5%8B%E8%AF%95%E7%94%A8%E4%BE%8B:camera%E6%B5%8B%E8%AF%95%E7%94%A8%E4%BE%8B:%E8%89%B2%E5%BD%A9%E8%BF%98%E5%8E%9F&rev=1788833347&do=diff 色彩还原 一、定义 色彩还原（Color Reproduction）指成像设备真实再现物体本身颜色的能力。在医学影像、技术摄影等领域，色彩准确度直接关系到判读与处理的可靠性，是成像质量评价的核心维度之一。 text/html 2026-09-16T03:14:57+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.yanding.com/doku.php?id=yanding:%E6%88%90%E5%83%8F%E8%B4%A8%E9%87%8F%E8%AF%84%E4%BB%B7:%E5%9B%BE%E5%83%8F%E8%B4%A8%E9%87%8F%E6%8C%87%E6%A0%87:%E8%89%B2%E5%BD%A9%E8%BF%98%E5%8E%9F&rev=1789528497&do=diff 色彩还原 一、定义 色彩还原指成像系统（胶片或数码相机等）在记录与处理画面时，输出与人眼在标准观察条件下对原场景色彩感知一致的颜色的能力。这种一致性通过拍摄标准色卡、比对实测色度数据与参考值之间的偏差来量化，常用指标为色差 ΔE、白平衡误差和饱和度偏移。 text/html 2025-10-31T06:55:45+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.yanding.com/doku.php?id=yanding:%E6%88%90%E5%83%8F%E5%9F%BA%E7%A1%80%E7%9F%A5%E8%AF%86:%E5%85%89%E5%AD%A6:%E8%89%B2%E5%BA%A6%E5%AD%A6:%E8%89%B2%E5%9F%9F&rev=1761893745&do=diff 数字相机有色域吗？ 随着数字图像的应用日趋广泛，色域（colour gamut）这个色学术语渐渐走入大众的视野。在（手机、平板等）移动计算设备、（台式、头戴式）计算机显示设备、电视机、投影机等产品的介绍中，时常可以看到色域这一术语及相应的规格（如 95% sRGB）。诚然，色域愈大，显示设备能够还原的颜色范围愈大，高纯度颜色的还原愈好，因此，扩展色域、广色域的概念也应运而生。在计算机术语中，显示设备、打印机等皆属于输出设备，色域可以部分体现输出设备（及媒介）的颜色还原能力。那么，我们不禁要问，作为数字图像的主要源头，以数字相机、扫描仪为代表的输入设备是否也有色域呢？今天我们就与大家一起来讨论这个有趣的问题。… text/html 2026-02-13T02:08:39+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.yanding.com/doku.php?id=yanding:%E6%88%90%E5%83%8F%E8%B4%A8%E9%87%8F%E8%AF%84%E4%BB%B7:%E6%B5%8B%E8%AF%95%E7%94%A8%E4%BE%8B:cms%E6%B5%8B%E8%AF%95%E7%94%A8%E4%BE%8B:cms_%E8%89%B2%E5%BD%A9%E8%BF%98%E5%8E%9F&rev=1770948519&do=diff CMS色彩还原 概念 CMS色彩还原是指摄像头监视系统（CMS）通过外部摄像头捕捉车辆周围场景信息后经图像处理、传输等环节后，在车内监视器上准确复现原始场景色彩的能力。它涵盖了对色调、饱和度、明度等色彩属性的精准还原，确保监视器呈现的色彩与实际场景中物体的固有色彩保持一致或在可接受的偏差范围内。 text/html 2025-11-11T06:46:48+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.yanding.com/doku.php?id=yanding:%E6%88%90%E5%83%8F%E5%9F%BA%E7%A1%80%E7%9F%A5%E8%AF%86:%E5%85%89%E5%AD%A6:%E8%89%B2%E5%BA%A6%E5%AD%A6:%E6%98%BE%E8%89%B2%E6%8C%87%E6%95%B0ra%E4%B8%8Eri%E7%9A%84%E5%8C%BA%E5%88%AB&rev=1762843608&do=diff 显色指数Ra与Ri的区别 在照明设计、色彩管理、影像创作等领域，显色指数是评判光源还原物体颜色能力的核心指标，而Ra（一般显色指数）与Ri（特殊显色指数）作为显色指数体系的两大核心参数，既相互关联又各有侧重。前者(Ra)是行业通用的“基础评分”，后者(Ri)则是针对特定色彩的“精准体检”。本文将系统拆解Ra与Ri的本质内涵、关联差异及应用逻辑，助力精准把控光源显色性能。$$R_i = 100 - 4.6 \Delta E$$$ \Delta E_i$$ \Delta E_i$$R_{i}$$$Ra =\frac{(R₁+R₂+R₃+R₄+R₅+R₆+R₇+R₈)}{8}$$… text/html 2026-04-16T08:49:20+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.yanding.com/doku.php?id=yanding:%E6%88%90%E5%83%8F%E8%B4%A8%E9%87%8F%E8%AF%84%E4%BB%B7:%E6%A0%87%E5%87%86%E5%8C%96%E6%B5%8B%E8%AF%95:iso_16505_cms%E8%89%B2%E5%BD%A9%E8%BF%98%E5%8E%9F%E6%B5%8B%E8%AF%95&rev=1776329360&do=diff ISO 16505：CMS色彩还原测试 色彩还原（Colour rendering） 指摄像机监视系统（CMS）将目标图卡的原始色彩在显示器上准确再现的能力。 指标（ISO 16505 6.8.3）： 对于色彩还原，显示器上图卡色块再现颜色的色调角应满足以下要求。颜色坐标基于 CIE1976 色彩空间进行描述： $(u'_r′ , v'_r )$$(u'_{it} ,v'_{it})$$（Δu′=u'_{it} - u'_r、Δv′=v'_{it} - v'_r ）$$\left( (u'_{it} - u'_r) \geq 0 \text{且} (v'_{it} - v'_r) \geq 0 \right)：\theta_{icolor} = \arctan\left( \frac{v'_{it}-v'_r}{u'_{it}-u'_r} \right)$$\left( (u'_{it} - u'_r) < 0 \text{且} (v'_{it} - v'_r) \geq 0 \right)： \theta_{icolor} = 180^\circ + \arctan\left(… text/html 2025-11-18T07:38:16+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.yanding.com/doku.php?id=yanding:%E6%88%90%E5%83%8F%E8%B4%A8%E9%87%8F%E8%AF%84%E4%BB%B7:%E6%A0%87%E5%87%86%E5%8C%96%E6%B5%8B%E8%AF%95:qc_t_1128-2019_%E6%B1%BD%E8%BD%A6%E7%94%A8%E6%91%84%E5%83%8F%E5%A4%B4_%E5%9B%BE%E5%83%8F%E8%A7%A3%E5%86%B3%E6%96%B9%E6%A1%88&rev=1763451496&do=diff 《QC/T 1128-2019：汽车用摄像头》图像解决方案 概述 《QC/T 1128-2019：汽车用摄像头》是我国汽车行业推荐性标准，2019 年发布实施，适用于汽车行驶辅助、环视、倒车等场景的车载摄像头，涵盖光学性能、成像质量、可靠性等相关参数要求与测试方法。本篇文章将重点解读其图像性能测试内容。$\text{SNR (dB)} = 20\log_{10}\left(\frac{\text{Si}}{\text{Ni}}\right)$${Si}$\( i \)${Ni}$\( i \)$$\text{DR} = 20 \left( D_{\text{SNR}=1} - D_{\text{SNR}=\text{MAX}} \right)$$$D_{\text{SNR}=1}$$D_{\text{SNR}=\text{MAX}}$$t_{on}$$t_{SL}$$$\theta_{\text{icolor}} = \begin{cases} \arctan\left( \dfrac{v'_{ti} - v'_{tr}}{u'_{ti} - u'_{tr}} \right) … text/html 2025-10-31T07:17:55+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.yanding.com/doku.php?id=yanding:%E6%88%90%E5%83%8F%E8%B4%A8%E9%87%8F%E8%AF%84%E4%BB%B7:%E5%B7%A5%E5%85%B7:%E5%85%89%E6%BA%90:%E5%A4%9A%E5%85%89%E8%B0%B1%E5%85%89%E6%BA%90%E7%AE%B1&rev=1761895075&do=diff 多光谱光源箱——为光学测试精度立新标，给每一道光精准“标定”答案 一、色温相同，颜色为何不同？ 色温，是对光色调的一种度量。一般来说，暖黄色光的色温较低，冷白色光的色温较高。看似同色温的光，实则蕴含着不同的 “光谱奥秘”。光谱，如同光的 “成分配方表” ，即使色温一致，不同光谱的光源，其成分也存在差异。 text/html 2026-09-21T03:40:21+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.yanding.com/doku.php?id=yanding:%E6%88%90%E5%83%8F%E8%B4%A8%E9%87%8F%E8%AF%84%E4%BB%B7:%E6%B5%8B%E8%AF%95%E7%94%A8%E4%BE%8B:camera%E6%B5%8B%E8%AF%95%E7%94%A8%E4%BE%8B:%E7%99%BD%E5%B9%B3%E8%A1%A1&rev=1789962021&do=diff 白平衡 一、人眼 vs 相机：有无颜色恒常性 数字相机的白平衡，旨在使场景中的中性色（如白衣服、白墙）在不同光源下都能被还原为中性色，避免颜色随环境色温发生漂移。 人眼具备“颜色恒常性”：从暖光到冷光，无论光源色温如何变化，人眼视觉系统都能自动扣除光源色调，将白衣服始终感知为白色。 text/html 2026-07-23T12:51:18+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.yanding.com/doku.php?id=yanding:%E6%88%90%E5%83%8F%E8%B4%A8%E9%87%8F%E8%AF%84%E4%BB%B7:%E5%B7%A5%E5%85%B7:%E5%9B%BE%E5%8D%A1:%E5%A6%82%E4%BD%95%E9%80%89%E6%8B%A9%E5%90%88%E9%80%82%E5%9B%BE%E5%8D%A1&rev=1784811078&do=diff 如何选择合适图卡？ 在图像质量评估（如摄像头、显示设备、激光雷达等）中，测试图卡是标准化、可复现的核心工具 —— 它能将 “主观视觉感受” 转化为 “客观数据指标”。本文将从基础概念出发，拆解图卡的用途、参数与选型逻辑、图卡材质与装裱、图卡的使用与存储，帮助你精准匹配测试需求以及正确使用图卡。$tan\frac{DFOV}{2}=\frac{D /2}{S}$$D=2S\frac{DFOV}{2}$$OD = \log_{10}\left( \frac{I_{0}}{I} \right)$$实际最小物理精度（微米）=\frac{25400}{DPI}$… text/html 2026-09-01T07:54:42+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.yanding.com/doku.php?id=yanding:%E6%88%90%E5%83%8F%E8%B4%A8%E9%87%8F%E8%AF%84%E4%BB%B7:%E6%B5%8B%E8%AF%95%E7%94%A8%E4%BE%8B:camera%E6%B5%8B%E8%AF%95%E7%94%A8%E4%BE%8B:%E6%88%90%E5%83%8F%E8%B4%A8%E9%87%8F%E8%AF%84%E4%BB%B7&rev=1788249282&do=diff 成像质量评价 概述 成像质量评价（Image Quality Assessment, IQA）指在给定条件（如相机的被摄场景、照明环境及显示设备的输入等）下，对成像系统的成像性能（如分辨率、噪声、畸变、色彩、动态范围等）进行主客观分析与评估。成像质量直接影响图像的实用价值 —— 例如人类观察者的视觉体验（如欣赏照片或影片）或目视效果（如使用 text/html 2026-09-15T07:48:28+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.yanding.com/doku.php?id=wiki:langswitch_map&rev=1789458508&do=diff  Language Switch Map 维护说明： * 第一列是中文页面ID * 第二列是英文页面ID * 只改表格，不要改格式 * 新增映射时一行一条 中文页ID 英文页ID yanding:成像基础知识:光学:几何光学:主光线角 text/html 2026-08-18T11:37:52+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.yanding.com/doku.php?id=yanding:%E6%88%90%E5%83%8F%E8%B4%A8%E9%87%8F%E8%AF%84%E4%BB%B7:%E5%9B%BE%E5%83%8F%E8%B4%A8%E9%87%8F%E6%8C%87%E6%A0%87:%E8%89%B2%E5%B7%AE&rev=1787053072&do=diff 色差 一、定义 色差（Chromatic Aberration, CA）是光学系统中一种常见的像差现象，其光学本质是不同波长的光在透镜材料中的折射率不同，导致复合光（如白光）经过透镜后无法汇聚于同一点，常表现为图像模糊和彩色边缘现象，在摄影镜头、显微镜等光学仪器尤为常见，显著降低成像清晰度和色彩还原度。 text/html 2026-09-16T05:51:05+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.yanding.com/doku.php?id=en:yanding:image_quality_evaluation:image_quality_factors:color_reproduction&rev=1789537865&do=diff Color Reproduction 1. Definition Color reproduction refers to the ability of an imaging system—such as photographic film or a digital camera—to produce colors that are consistent with the human visual perception of the colors in the original scene under standard viewing conditions during image capture and processing. This consistency can be quantified by photographing a standard color chart and comparing the measured colorimetric data with reference values. Common metrics include color differe… text/html 2025-10-31T07:20:23+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.yanding.com/doku.php?id=yanding:%E6%88%90%E5%83%8F%E8%B4%A8%E9%87%8F%E8%AF%84%E4%BB%B7:%E5%B7%A5%E5%85%B7:%E5%9B%BE%E5%8D%A1:%E5%9B%BE%E5%8D%A1%E6%9D%90%E8%B4%A8%E9%80%89%E6%8B%A9%E6%8C%87%E5%8D%97&rev=1761895223&do=diff 图卡材质选择指南 图卡是光学检测、成像系统测试等领域的核心工具，其材质直接影响测试精度、使用寿命与适用场景。合理选择图卡材质，需结合测试模式（反射/透射）、分辨率要求、环境适应性等需求，对各类材质的优缺点进行全面分析。 text/html 2026-09-16T07:45:43+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.yanding.com/doku.php?id=%E6%B5%8B%E8%AF%95%E7%94%A8%E4%BE%8B2&rev=1789544743&do=diff 测试课堂 Camera测试用例 * 空间频率响应_sfr * 防抖 * 白平衡 * 色彩还原 * 动态范围 * 噪声 * 灰阶响应 * 畸变 * 视场角 * 色差 * 均匀性 * 帧率 * 曝光时间 * 眩光 * 纹理丢失 ADAS测试用例 * 对比度表现指标_cpi * 闪烁 flicker CMS测试用例 * CMS的介绍 * CMS视镜类型及视野要求 * CMS测试前所需参数 * 亮度对比度复现 * 灰度等级复现 * 方向均匀性 * 横向均匀性 * 双点光源 * 眩光 * 景深 * 色彩还原 * 帧率 * 锐度… text/html 2026-09-14T07:38:26+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.yanding.com/doku.php?id=en:yanding:image_quality_evaluation:test_cases:camera_test_cases:color_reproduction&rev=1789371506&do=diff Color Reproduction 1. Definition Color reproduction​ is the ability of an imaging device to accurately render the original colors of objects in a scene. In fields such as medical imaging and technical photography, color accuracy directly affects the reliability of image interpretation and subsequent processing, making it a core dimension in imaging quality evaluation.\(R_a\)\(S\)\(800 \pm 80\)\(^*_{ab}\)\(_{94}\)\(_{00}\)\(_{00}\)\(u'v'\)\(R\)\(S\)\(C^*\)\[ S=\frac{C^*_{\mathrm{measured}}}{C^*… text/html 2026-07-10T08:03:28+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.yanding.com/doku.php?id=en:yanding:image_quality_evaluation:test_cases:cms_test_cases:cms_color_reproduction&rev=1783670608&do=diff FIXME This page is not fully translated, yet. Please help completing the translation. (remove this paragraph once the translation is finished) CMS Color Reproduction Concept CMS Color Reproduction refers to the ability of the Camera Monitor System (CMS) to accurately reproduce the colors of the original scene on the in-vehicle monitor after capturing the scene information around the vehicle via external cameras, followed by image processing and transmission. It encompasses the precise repr… text/html 2026-08-10T02:32:42+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.yanding.com/doku.php?id=yanding:%E6%88%90%E5%83%8F%E8%B4%A8%E9%87%8F%E8%AF%84%E4%BB%B7:%E6%B5%8B%E8%AF%95%E7%94%A8%E4%BE%8B:cms%E6%B5%8B%E8%AF%95%E7%94%A8%E4%BE%8B:cms_%E6%99%AF%E6%B7%B1&rev=1786329162&do=diff CMS景深 定义： CMS 景深指摄像头监控系统（电子后视镜） 后方目标可清晰成像的物距范围。 光学成像中，焦平面外的物点会在像面上形成模糊光斑，即弥散圆；当弥散圆尺寸超出容许阈值时，成像模糊度超出清晰辨识临界，无法识别目标。$$MTF10_{(1:1)} \geq 0,9^*MTF10_{MIN(1:1)} \left[ \text{LW/PH} \right]\tag{1}$$$$MTF10_{(1:1)} \geq \frac{1}{2} MTF10_{MIN(1:1)} \left[ \text{LW/PH} \right]]\tag{2}$$$MTF10_{(1:1)}$$MTF10_{\mathrm{MIN}(1:1)}$$$ MTF10_{\mathrm{MIN}(1:1)/\mathrm{hor}} = \left( \frac{W_{\mathrm{monitor}/\mathrm{hor}}}{W_{\mathrm{monitor}/\mathrm{hor}/\mathrm{min}}} \right) \cdot M_{\mathrm{mirror}/\m… text/html 2026-01-16T02:00:21+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.yanding.com/doku.php?id=camera%E6%B5%8B%E8%AF%95%E7%94%A8%E4%BE%8B&rev=1768528821&do=diff *空间频率响应_sfr *纹理丢失 *灰阶响应 *动态范围 *噪声 *视场角 *畸变 *色差 *均匀性 *眩光 *色彩还原 *白平衡 *帧率 *曝光时间 *防抖 text/html 2026-09-16T07:38:27+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.yanding.com/doku.php?id=%E6%88%90%E5%83%8F%E8%B4%A8%E9%87%8F%E9%97%AE%E9%A2%98&rev=1789544307&do=diff 图像质量指标 * MTF（调制传递函数） * 锐度 * 分辨率 * 动态范围 * 噪声 * 均匀性 * 杂光 * 畸变 * 视场角 * 色差 * 白平衡 * 色彩还原 text/html 2025-10-29T08:32:41+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.yanding.com/doku.php?id=keywords&rev=1761726761&do=diff 动态范围/色彩还原/空间频率响应/均匀性/畸变/杂光/闪烁/CMS/图卡 text/html 2026-05-09T11:02:40+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.yanding.com/doku.php?id=%E6%A0%87%E5%87%86%E5%8C%96%E6%B5%8B%E8%AF%95&rev=1778324560&do=diff 标准化测试 * emva_1288_图像传感器与相机性能表征标准 * qc_t_1128-2019_汽车用摄像头_图像解决方案 * ieee_2020-2024_flare测试 * ieee_2020-2024_flicker测试 * ieee_2020-2024_cpi测试 * iso_12233_sfr测试 * iso_15739_噪声测试 * iso_17850_畸变测试 * iso_18844_杂光测试 * iso_17957_shading测试 * gb_15084-2022cms视镜类型及视野要求解读 * iso_16505_cms色彩还原测试 * iso_16505_cms景深测试 * gb_t_45500-2025_车载激光雷达性能要求及试验方法 * gb_t_43249-2023_汽车用被动红外探测系统… text/html 2026-07-23T11:59:46+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.yanding.com/doku.php?id=en:yanding:image_quality_evaluation:test_cases:camera_test_cases:image_quality_evaluation&rev=1784807986&do=diff FIXME This page is not fully translated, yet. Please help completing the translation. (remove this paragraph once the translation is finished) Image Quality Assessment Overview Image Quality Assessment (IQA) refers to the subjective and objective analysis and evaluation of the imaging performance (such as resolution, noise, distortion, color, dynamic range, etc.) of an imaging system under given conditions (such as the captured scene, lighting environment, and display device input of a cam…