{
  "added_at": "2026-10-17",
  "additional_evidence_urls": [
    "https://github.com/cschalle/mipi-fixes-x1-aura/blob/533d995b7acbd6965e5b0b85c97f8bafab9fed4e/findings/WINDOWS-DRIVER.md",
    "https://github.com/cschalle/mipi-fixes-x1-aura/blob/533d995b7acbd6965e5b0b85c97f8bafab9fed4e/findings/TESTING.md",
    "https://github.com/cschalle/mipi-fixes-x1-aura/blob/533d995b7acbd6965e5b0b85c97f8bafab9fed4e/kernel/README.md",
    "https://github.com/cschalle/mipi-fixes-x1-aura/blob/533d995b7acbd6965e5b0b85c97f8bafab9fed4e/libcamera/README.md",
    "https://github.com/cschalle/mipi-fixes-x1-aura/blob/533d995b7acbd6965e5b0b85c97f8bafab9fed4e/kernel/patches/0000-cover-letter.patch",
    "https://github.com/cschalle/mipi-fixes-x1-aura/blob/533d995b7acbd6965e5b0b85c97f8bafab9fed4e/libcamera/patches/libcamera-lsc-0.7.1.patch",
    "https://github.com/cschalle/mipi-fixes-x1-aura/blob/533d995b7acbd6965e5b0b85c97f8bafab9fed4e/tools/aiqb.py",
    "https://github.com/cschalle/mipi-fixes-x1-aura/blob/533d995b7acbd6965e5b0b85c97f8bafab9fed4e/tools/gen-tuning.py",
    "https://github.com/cschalle/mipi-fixes-x1-aura/blob/533d995b7acbd6965e5b0b85c97f8bafab9fed4e/rpms/README.md",
    "https://blogs.gnome.org/uraeus/2026/10/15/aiandreverseengineerhardware/",
    "https://github.com/cschalle/mipi-fixes-x1-aura/blob/533d995b7acbd6965e5b0b85c97f8bafab9fed4e/tools/README.md",
    "https://github.com/cschalle/mipi-fixes-x1-aura/blob/533d995b7acbd6965e5b0b85c97f8bafab9fed4e/tools/raw.py"
  ],
  "category": "reconstruction-cases",
  "description_en": "Recovers selected camera-tuning structures from an Intel Windows driver package and uses them to repair Linux image capture on one ThinkPad model. Public CPFF/AIQB parsers, kernel patches and libcamera changes accompany the author’s Claude-assisted investigation and bounded before/after measurements.",
  "description_zh": "从 Intel Windows 驱动包中恢复选定的相机调校结构，用于修复一个 ThinkPad 型号在 Linux 下的图像采集。公开的 CPFF／AIQB 解析器、内核补丁及 libcamera 修改，配有作者报告的 Claude 辅助调查和有限范围的前后测量。",
  "entry_url": "https://awesomerea.org/resources/thinkpad-imx471-camera-case/",
  "entry_url_zh": "https://awesomerea.org/zh/resources/thinkpad-imx471-camera-case/",
  "evidence_url": "https://github.com/cschalle/mipi-fixes-x1-aura/blob/533d995b7acbd6965e5b0b85c97f8bafab9fed4e/README.md",
  "group": "cases",
  "id": "thinkpad-imx471-camera-case",
  "json_url": "https://awesomerea.org/resources/thinkpad-imx471-camera-case/record.json",
  "kind": "case-study",
  "markdown_url": "https://awesomerea.org/resources/thinkpad-imx471-camera-case/index.md",
  "markdown_url_zh": "https://awesomerea.org/zh/resources/thinkpad-imx471-camera-case/index.md",
  "name": "ThinkPad IMX471: recovering camera tuning for Linux",
  "name_zh": "ThinkPad IMX471：为 Linux 恢复相机调校信息",
  "record_type": "resource",
  "relationship": "independent-reconstruction",
  "requirement_facets": [
    "scope",
    "prerequisites",
    "testing",
    "limits",
    "attribution",
    "license"
  ],
  "requirements": [
    "The reviewed target is a Lenovo ThinkPad X1 Carbon Gen 14 (Aura Edition), with a Sony IMX471 sensor behind Intel IPU7. The author tested Fedora 44 kernel 7.2.8 and a libcamera 0.7.1 backport. The published kernel package omits BTF/debug information and is described as a test kernel, not a daily-driver recommendation.",
    "The Python 3 analysis tools use NumPy and assume a 1928x1088 RG10 stream with a 3904-byte stride. Some scripts embed the author’s local layout and need path adaptation. Repeating the tuning analysis requires the corresponding vendor driver-package data or device captures.",
    "The author’s controlled low-light comparison holds 400 frames for convergence and reports frame brightness rising from 31.1 to 90.9. The test record describes crop-selection, colour-bar and analogue-gain checks on the affected device. Its 46/46 v4l2-compliance passes occurred before and after the crop fix, so that pass count alone did not detect the defect.",
    "The work adds three kernel fixes plus lens-shading and white-balance-statistics changes to an existing Linux driver and software ISP. Low-light blue remains about 17% short, an 18.8 ms exposure ceiling is not fixed here, and the second IR camera is outside scope. It does not recover the entire Windows driver, emulate the laptop or establish compatibility across camera models.",
    "The dated investigation includes corrected and withdrawn hypotheses. The patch cover letter attributes Claude assistance and hardware checking to the author. The later blog reports submission/review activity.",
    "No top-level project license is present at the pinned revision. Newly added libcamera implementation files in the patch declare LGPL-2.1-or-later, and the tuning-data section declares CC0-1.0; these are component notices, not a blanket license for every script or vendor-derived input. Existing kernel/libcamera code and vendor materials retain their separate terms."
  ],
  "requirements_zh": [
    "所审阅目标是 Lenovo ThinkPad X1 Carbon Gen 14（Aura Edition），采用 Intel IPU7 后端的 Sony IMX471 传感器。作者测试了 Fedora 44 内核 7.2.8 和 libcamera 0.7.1 回移补丁。发布的内核包省略 BTF／调试信息，被描述为测试内核，并非日常使用推荐。",
    "Python 3 分析工具使用 NumPy，并假定输入为 1928x1088 RG10 流、每行跨度 3904 字节。部分脚本写入了作者的本地目录布局，需要调整路径。重做调校分析需另行提供相应厂商驱动包数据或设备采集记录。",
    "作者在受控弱光比较中等待 400 帧以使算法收敛，报告画面亮度由 31.1 升至 90.9。测试记录描述了受影响设备上的裁剪区域查询、彩条和模拟增益检查。v4l2-compliance 在裁剪修复前后均为 46/46 通过，因此该通过数本身未检测出缺陷。",
    "工作在既有 Linux 驱动和软件 ISP 上增加三项内核修复，以及镜头阴影校正和白平衡统计修改。弱光下蓝色仍约不足 17%，18.8 ms 的曝光上限尚未在此修复，第二个红外相机不在范围内。项目不恢复完整 Windows 驱动、不仿真整台笔记本，也不确立跨相机型号兼容性。",
    "注明日期的调查包含已更正和撤回的假设。补丁说明将 Claude 辅助和硬件检查归于作者；后续博客报告提交／审阅活动。",
    "固定版本没有顶层项目许可证。补丁中新添的 libcamera 实现文件声明 LGPL-2.1-or-later，调校数据部分声明 CC0-1.0；这些是组件声明，不是覆盖全部脚本或厂商派生输入的统一许可。既有内核／libcamera 代码和厂商材料仍适用各自条款。"
  ],
  "targets": [
    "firmware"
  ],
  "url": "https://github.com/cschalle/mipi-fixes-x1-aura",
  "verification": "source-reviewed",
  "verified_at": "2026-10-17"
}