视力为20/20
视觉为20/20
视觉灵敏度为20/20

它是我们不需要做出任何努力就能清晰地看世界。... - My ...

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视觉不只是看得20/20的视力，它是我们不需要做出任何努力就能清晰地看世界。 Patients who have experienced a vision problem, learning challenge or brain injury ...

任何视觉问题（远视，近视，闪光，两眼度数相...
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Mar 28, 2022 — 拥有20/20的视力，只能让你看清远方。但，不代表你能清晰地分辩整个世界！ Patients who have experienced vision problem, learning challenge or brain ...


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Note added at 14 mins (2023-04-08 03:15:59 GMT)
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20/20 vision is normal vision acuity (the clarity or sharpness of vision) measured at a distance of 20 feet. If you have 20/20 vision, you can see clearly at 20 feet what should normally be seen at a distance.

Visual Acuity | AOA - American Optometric Association

American Optometric Association
https://www.aoa.org › vision-and-vision-correction › vis...
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Note added at 1 hr (2023-04-08 04:29:33 GMT)
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The Anatomy of a Machine Vision System
Historically, industrial machine vision systems consist of a camera or optical sensor, lighting to illuminate the capture area, a host PC and/or controller, and a frame grabber. The frame grabber is of particular interest, as it is a device that captures still frames at higher resolution than a camera could to simplify analysis by AI or computer vision algorithms.

The cameras or optical sensors connect directly to a frame grabber over interfaces such as CoaXPress, GigE Vision, or MIPI. The frame grabber itself is usually a slot card that plugs into a vision platform or PC and communicates with the host over PCI Express.

Besides being able to capture higher-resolution images, the benefits of a frame grabber include the ability to synchronize and trigger on multiple cameras at once, and to perform local image processing (like color correction) as soon as a still shot is captured. Not only does this eliminate the latency—and potentially the cost—of transmitting images somewhere else for preprocessing, but it also frees the host processor to run inferencing algorithms, execute corresponding control functions (like turning off a conveyor belt), and other tasks.

In some ways, this architecture is more complex than newer ones that integrate different subsystems in this chain. However, it is much more scalable, and provides a higher degree of design flexibility because the amount of image-processing performance you can achieve is only limited by the number of slots you have available in the host PC or controller.

Well, that and the amount of bandwidth you have running between the host processor and the frame grabber, that is.

Seeing 20/20 with PCIe 4.0
For machine vision systems, especially those that rely on multiple cameras and high-resolution image sensors, system bandwidth can become an issue quickly. For example, a 4MP camera requires about 24 Mbps of throughput, which on its own barely puts a dent in the roughly 1 Gbps per lane data rates provided by PCIe 3.0 interconnects.

Gen4 PCIe interfaces double the #bandwidth of their PCIe 3.0 counterparts to almost 2 Gbps per lane, essentially yielding twice as many video channels on your #MachineVision platform without any other sacrifices. @SECO_spa via @insightdottech

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Note added at 1 hr (2023-04-08 04:31:03 GMT)
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是指“industrial machine vision systems”的“视力，意思是用了 with PCIe 4.0， 机器的视觉灵敏度可达20/20.

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Note added at 21 hrs (2023-04-09 00:30:06 GMT)
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About Vision Systems Design China - 视觉系统设计
vision-systems-china.com
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《Vision System Design》杂志是美国领先的媒体品牌，主要致力于报道机器视觉及影像处理 ... media brand focused on machine vision and image processing systems.

2019年工厂自动化机器视觉市场规模将达43亿美元
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Oct 8, 2019 — 过去10年机器视觉(machine vision)技术已有长足进展，在工厂自动化的相关应用也日益普及，2019年市场规模将达43亿美元。

机械视觉系统的全球市场:成长，趋势，及预测(2019年～2024年)

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Jan 1, 2021 — Machine Vision Systems Market - Growth, Trends, COVID-19 Impact, and Forecasts (2021 - 2026) ... ※ 本网页内容可能与最新版本有所差异。详细情况请与 ...


机器视觉系统，就是代替人眼来进行观察的器械，可以理解成“机器眼”，这个机器眼有着20/20的“视觉”灵敏度。

无非就是说这个系统发展得越来越精细，在执行其功能（例如检查产品的瑕疵）时，其灵敏度更高，“看”得更仔细、更准确。

PCIe 4.0:
Peripheral Component Interconnect express, 4th generation.
外围组件快速互联, 第4代。

20/20视力 是正常视力(正常视觉)。
20/20 vision is normal vision.
20/20 vision is normal vision acuity (the clarity or sharpness of vision) measured at a distance of 20 feet.
https://www.aoa.org/healthy-eyes/vision-and-vision-correctio...

PCIe 4.0的速度是PCIe 3.0的两倍，用 PCIe 4.0 来连接 显卡(graphics card) 可把影像清晰度提升，达到正常视觉清晰度。
https://notebook.yesky.com/284/725790284.shtml

Seeing 20/20 with PCIe 4.0
用 PCIe 4.0 来达到正常视觉清晰度