https://wiki.yanding.com/ 2026-08-24T00:01:01+00:00 https://wiki.yanding.com/ https://wiki.yanding.com/lib/tpl/myconfluence/images/favicon.ico text/html 2026-07-10T08:03:33+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.yanding.com/doku.php?id=en:yanding:image_quality_evaluation:standardized_testing:ieee_2020_2024_flicker&rev=1783670613&do=diff FIXME This page is not fully translated, yet. Please help completing the translation. (remove this paragraph once the translation is finished) IEEE 2020-2024 Flicker Test 1. Definition of Flicker Flicker refers to the phenomenon of periodic brightness fluctuations, banding, or local brightness instability in images captured by a camera. This phenomenon is essentially caused by a mismatch in temporal sampling. LED lights typically emit light in pulses at frequencies of hundreds of times per… text/html 2026-07-10T08:03:14+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.yanding.com/doku.php?id=en:yanding:image_quality_evaluation:test_cases:adas_test_cases:flicker&rev=1783670594&do=diff FIXME This page is not fully translated, yet. Please help completing the translation. (remove this paragraph once the translation is finished) Flicker 1. What is Flicker In the field of automotive imaging, Flicker refers to the phenomenon of periodic brightness fluctuations, banding, or local brightness instability in images captured by a camera. This phenomenon is not the text/html 2025-11-07T09:02:46+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:ieee_2020-2024_flicker%E6%B5%8B%E8%AF%95&rev=1762506166&do=diff IEEE 2020-2024 Flicker测试 一、闪烁（Flicker)的定义 闪烁（Flicker）指相机拍摄的图像中出现周期性明暗波动、条纹或局部亮度不稳定的现象。该现象本质上是时间采样不匹配导致的问题，LED 灯通常以每秒数百次的频率脉冲发光，其表观亮度通过调整脉冲的占空比（即亮灯时间在一个周期内的占比）来控制，而由于人眼相当于一个天然的时间低通滤波器，这种高频脉冲在视觉上会被 “平滑” 为持续稳定的光效，因此人眼看到的 LED 灯处于恒定亮灯状态。但拍摄光源的相机可能会与这些波动以相同的时间尺度进行曝光，使得相机更容易捕捉到光源本身的动态变化。$$ FMI = 100 \times \frac{x_{\max} - x_{\min}}{x_{\max} + x_{\min}} $$$x_{\max}$$x_{\min}$$$ FDI = Prob\left(\frac{x_{\mathrm{meas}} - x_{\mathrm{ref\,off}}}{x_{\mathrm{ref\,off}}} \geq \tau \right)$$$FDI$$Prob$$x_{\m… text/html 2026-01-07T09:07:12+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:adas%E6%B5%8B%E8%AF%95%E7%94%A8%E4%BE%8B:%E9%97%AA%E7%83%81_flicker&rev=1767776832&do=diff 闪烁(Flicker) 一、什么是闪烁 在车载成像领域，闪烁（Flicker）指相机拍摄的图像中出现周期性明暗波动、条纹或局部亮度不稳定的现象。这种现象并非光源 “肉眼可见的闪烁”，而是由于相机与光源的周期性特性不匹配，导致图像对光源的 “周期性亮度变化” 产生了可见的捕捉偏差。在ADAS应用中，闪烁会增加识别交通信号、速度标志或安全信息的难度。 text/html 2026-07-10T08:03:06+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.yanding.com/doku.php?id=en:yanding:image_quality_evaluation:tools:light_sources:traffic_light_simulation_platform&rev=1783670586&do=diff FIXME This page is not fully translated, yet. Please help completing the translation. (remove this paragraph once the translation is finished) Yanding Road Traffic Signal Light Simulation and Testing Platform With the continuous development of autonomous driving technology, corresponding testing methods must also be upgraded synchronously. Current testing mostly focuses on lane detection, object tracking, and scene understanding. However, road traffic signal light recognition, as a critical… text/html 2026-08-21T14:40:26+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.yanding.com/doku.php?id=wiki:langswitch_map&rev=1787323226&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 2026-07-23T11:59:46+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.yanding.com/doku.php?id=en:yanding:image_quality_evaluation:test_cases:camera_test_cases:frame_rate&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) Frame Rate 1. What is Frame Rate? Essentially, a video is composed of a sequence of still images. These still images are the smallest unit of a video, known as frames. Frame rate refers to the number of consecutive frames captured or displayed per second, measured in Hz (Hertz) or frames per second (fps). For example, 30 fps means 30 consecutive fra… text/html 2026-08-20T02:50:53+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.yanding.com/doku.php?id=en:yanding:image_quality_evaluation:image_quality_factors:noise&rev=1787194253&do=diff FIXME This page is not fully translated, yet. Please help completing the translation. (remove this paragraph once the translation is finished) Noise I. Definition Image noise refers to the unintended interference superimposed on the target signal during image acquisition, transmission, or processing. Its external manifestation is the $\sigma_{\text{signal}} = \sqrt{N_{\text{signal}}}$$I_{\text{dark}} \propto A \cdot T^3 e^{-\frac{E_g}{kT}}$$I_{\text{dark}}$$T$$E_g$$k$$A$$\sigma_{\text{dark… text/html 2026-07-24T07:49:48+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.yanding.com/doku.php?id=en:test_cases&rev=1784879388&do=diff Test Cases This section provides practical test cases for image quality evaluation, organized by application: * Camera Test Cases * Image Quality Evaluation Overview * Dynamic Range * Noise * Sharpness * White Balance * Distortion * Uniformity * Color Reproduction * Chromatic Aberration * Field of View * Exposure Time * Frame Rate * Glare * Spatial Frequency Response (SFR) * Texture Loss * Gray Scale Response * Image Stabilization * MTF/S… text/html 2026-07-24T07:49:20+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.yanding.com/doku.php?id=en:yanding:image_quality_evaluation:standardized_testing&rev=1784879360&do=diff Standardized Testing This section covers standardized testing methods for image quality evaluation, including: * ISO 12233 SFR Testing * ISO 15739 Noise Testing * ISO 16505 CMS Depth of Field Testing * ISO 16505 CMS Color Reproduction Testing * ISO 17850 Distortion Testing * ISO 17957 Shading Testing * ISO 18844 Flare Testing * EMVA 1288 * IEEE 2020-2024 CPI Testing * IEEE 2020-2024 Flare Testing * IEEE 2020-2024 Flicker Testing * GB 15084-2022 CMS * GB/T 43249-2023 P… text/html 2025-10-31T07:19:02+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:%E7%9F%A9%E9%98%B5%E4%BA%A4%E9%80%9A%E7%81%AF&rev=1761895142&do=diff 研鼎矩阵交通灯助力ADAS系统准确识别交通灯状态 引言 随着自动驾驶技术的飞速发展，车载ADAS（高级驾驶辅助系统）的环境感知性能面临严峻挑战，其中交通灯识别问题尤为显著。本文将深入分析这一技术挑战，并探讨研鼎的矩阵交通灯在ADAS测试中的创新应用。 text/html 2026-07-10T08:03:06+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.yanding.com/doku.php?id=en:yanding:image_quality_evaluation:tools:light_sources:matrix_traffic_light&rev=1783670586&do=diff FIXME This page is not fully translated, yet. Please help completing the translation. (remove this paragraph once the translation is finished) Yanding Matrix Traffic Light Helps ADAS Systems Accurately Recognize Traffic Light Status Introduction text/html 2025-10-31T08:50:46+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.yanding.com/doku.php?id=adas%E6%B5%8B%E8%AF%95%E7%94%A8%E4%BE%8B&rev=1761900646&do=diff 闪烁_flicker 对比度表现指标_cpi 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 2026-05-18T06:11:04+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=1779084664&do=diff 测试课堂 ADAS测试用例 * 对比度表现指标_cpi * 闪烁 flicker Camera测试用例 * 动态范围 * 噪声 * 均匀性 * 帧率 * 曝光时间 * 灰阶响应 * 畸变 * 白平衡 * 眩光 * 空间频率响应_sfr * 纹理丢失 * 色差 * 色彩还原 * 视场角 * 防抖 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 2026-07-15T12:13:13+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.yanding.com/doku.php?id=en:keywords&rev=1784117593&do=diff dynamic range/color reproduction/spatial frequency response/uniformity/distortion/flare/flicker/CMS/test charts text/html 2025-11-07T09:02:08+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:ieee_2020-2024_cpi%E6%B5%8B%E8%AF%95&rev=1762506128&do=diff IEEE 2020-2024 CPI测试 CPI的定义 对比度是区分物体与环境的重要基础条件。对比度表现指标（Contrast Performance Indicators，简称 CPI）是用于评估成像系统的对比度再现能力的测试指标，主要有两种：$(L_{in})$$(L_{in})=(L_{max}+L_{min})/2$$L_{in}$$L_{max}$$L_{min}$$L_{max} $$L_{min}$$C_{W}$$C_{M}$$C_{W}=\frac{L_{max}}{L_{min}}-1$$C_{W}$$L_{max} $$L_{min}$$C_{W}$$L_{min}$$C_{M}=\frac{L_{max}-L_{min}}{L_{max}+L_{min}}$$L_{max}$$L_{min}$$C_{M}$$C_{\text{PDF}}$$\frac{n(n-1)}{2}$${C_{mean}}$${\delta}$$C_{in}$$CTA_{C_{\text{in}}} = P\left[(C_{\text{in}} - \delta_- \times C_… text/html 2026-07-10T08:03:32+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.yanding.com/doku.php?id=en:yanding:image_quality_evaluation:standardized_testing:ieee_2020_2024_cpi&rev=1783670612&do=diff FIXME This page is not fully translated, yet. Please help completing the translation. (remove this paragraph once the translation is finished) IEEE 2020-2024 CPI Test Definition of CPI Contrast is a crucial fundamental condition for distinguishing objects from their surroundings. $(L_{in})$$(L_{in})=(L_{max}+L_{min})/2$$L_{in}$$L_{max}$$L_{min}$$L_{max}$$L_{min}$$C_{W}$$C_{M}$$C_{W}=\frac{L_{max}}{L_{min}}-1$$C_{W}$$L_{max}$$L_{min}$$C_{W}$$L_{min}$$C_{M}=\frac{L_{max}-L_{min}}{L_{max}+L_{… text/html 2026-07-10T08:03:37+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.yanding.com/doku.php?id=en:yanding:image_quality_evaluation:standardized_testing:qc_t_1128_2019&rev=1783670617&do=diff FIXME This page is not fully translated, yet. Please help completing the translation. (remove this paragraph once the translation is finished) Image Solutions for "QC/T 1128-2019: Automotive Cameras" Overview “QC/T 1128-2019: Automotive Cameras$\text{SNR (dB)} = 20\log_{10}\left(\frac{\text{Si}}{\text{Ni}}\right)$${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_{\tex… 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:exposure_time&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) Exposure Time 1. What is Exposure Time? In layman's terms, exposure time is the time interval from pressing the shutter button to releasing it, measured in seconds. From a professional perspective, exposure time mainly refers to the photosensitive duration of the sensor. The longer the exposure time, the brighter the image, which is suitable for low… text/html 2026-07-10T08:03:29+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_frame_rate&rev=1783670609&do=diff FIXME This page is not fully translated, yet. Please help completing the translation. (remove this paragraph once the translation is finished) I. Definition CMS frame rate refers to the total number of valid images completely displayed by the vehicle Camera Monitor System (CMS) per unit of time, encompassing image capture, processing, transmission, and display. The unit is