FICS PCB Image Collection (FPIC)

印刷电路板的光学图像以及任何文本、徽标和表面贴装器件 (SMD) 的详细注释。有数百个样本，涵盖各种制造地点、尺寸、节点技术、应用等。 pcb_image：每个 PCB 表面和背面的光学图像，带有唯一标识符。 color_checker：用于考虑环境照明因素的调色板以及照片分辨率的比例参考。每个 pcb 图像指示它与哪个颜色检查器相关联。 ocr_annotation：光学字符识别注释。这包括 PCB 图像上所有相关文本周围的多边形边界。这段文字是在板上还是在设备上，是否是徽标，方向等都在 csv 的列中注明。 smd_annotation：表面贴装设备 (SMD) 注释。这包括所有相关 SMD 器件（例如电阻器、电容器、电感器、晶体管、二极管、LED 等）周围的多边形边界。连同每个组件，其相关的丝网印刷标志（“L”、“R”、“C”、“U”等）都被记录下来。 vtp_annotation：过孔、走线和引脚 (VTP) 注释。这些是 PCB 上 SMD 之间的连接区域。当前存在的注释很少，目前被认为处于“测试版”模式。元数据：保存两个文件，对应于图像文件的信息。 pcb.csv 包含有关物理 PCB 样本的信息，例如它们的颜色、在线项目描述和任何注释。 color_checker.csv 表示与该颜色检查器相关的任何图像的每毫米像素 (ppmm)、是否使用了 X-Rite ColorChecker Passport 或 Nano、执行采集的相机以及任何相关说明。每个注释文件都旨在与 S3A 应用程序（https://gitlab.com/ficsresearch/s3a 或 https://pypi.org/project/s3a/）兼容，这是一种用于在图像上可视化多边形注释的 Python 工具。

Optical images of printed circuit boards (PCBs) along with detailed annotations for any text, logos, and surface-mounted devices (SMDs). There are hundreds of samples covering diverse manufacturing locations, board sizes, nodal technologies, application scenarios, and more.

pcb_image: Optical images of both the front and back surfaces of each PCB, with unique identifiers.

color_checker: A color palette used to compensate for ambient lighting variations, as well as a scale reference for photo resolution. Each PCB image indicates which color checker it is associated with.

ocr_annotation: Optical Character Recognition (OCR) annotations. This includes polygonal bounding boxes around all relevant text on PCB images. Columns in the accompanying CSV file specify whether the text is located on the PCB itself or on an attached device, whether it is a logo, its orientation, and other relevant details.

smd_annotation: Surface-Mounted Device (SMD) annotations. This includes polygonal bounding boxes around all relevant SMD components such as resistors, capacitors, inductors, transistors, diodes, LEDs, etc. Along with each component, its associated silkscreen mark (e.g., "L", "R", "C", "U", etc.) is recorded.

vtp_annotation: Via, trace, and pin (VTP) annotations. These refer to the connection areas between SMDs on PCBs. Currently, only a limited number of such annotations are available, and this feature is considered to be in "beta" mode.

Metadata: Two files are stored corresponding to the information of the image files.
- pcb.csv contains information about physical PCB specimens, including their colors, online product descriptions, and associated annotations.
- color_checker.csv records the pixels per millimeter (ppmm) value for any images linked to this color checker, whether an X-Rite ColorChecker Passport or Nano was used, the camera utilized for image acquisition, and any relevant instructions.

Each annotation file is designed to be compatible with the S3A application (https://gitlab.com/ficsresearch/s3a or https://pypi.org/project/s3a/), a Python tool for visualizing polygonal annotations on images.