不确定性和可微分成像
December 25, 2024
激光过敏 漫长的徘徊 理解的种子 不确定性的本质 危险的简化 可微分革命 闭环 反思 参考文献 激光过敏 完成计算机科学本科学业后，我转向光学工程攻读研究生，却发现身体似乎在抗拒这个全新的环境。每次踏入实验室，恶心、头痛与眩晕便如潮水般席卷而来。在经历数月不明原因的折磨后，我曾得出一个戏剧性的结论：我一定是激光过敏。 如今回想，真相很简单 —— 我只是欠缺基础的光学知识。导师察觉我的困境后，尝试为我分配更多计算任务，尽可能减少实验工作。但在光学工程领域，实验始终是绕不开的必修课。即便满心恐惧与不适，我仍不得不硬着头皮面对挑战。 接踵而至的难题层层叠叠：首尔国立大学的安全规范禁止单独进行实验；实验室与办公室相隔甚远；而我又是团队中唯一的女性成员，实验通常会需要约三个人。在无数个举步维艰的时刻里，某个周末的经历尤为刻骨铭心 —— 我偷偷溜进实验室（我不是教大家违反学校规章制度），本打算完成一组简单的测量。我误将错误规格的螺丝拧进光学平台，偏偏卡在光轴的关键位置。公制与英制螺丝混乱，我用尽办法也无法取出。在实验室黑窗帘的包围中，长久积压的…
Uncertainties and Differentiable Imaging
December 25, 2024
The Laser Allergy Years of Wandering Seeds of Understanding The Nature of Uncertainty The Dangerous Simplification Differentiable Revolution Closing the Loop Reflection References This post is published in Nature Research Communities. You can access it via the link. The Laser Allergy After completing my BS in computer science, I transitioned to optical engineering for graduate school—but my body seemed to rebel against the very environment I’d chosen. Every time I entered the lab, waves of nausea, headaches, and dizziness would overwhelm me. After months of this mysterious suffering, I reached a dramatic conclusion: I must be allergic to lasers. The truth was less exotic but equally challenging. I simply lacked the foundational optics knowledge my peers took for granted. Recognizing…
Tips for Optical Experiments
January 12, 2024
Planar-convex lens alignment Reflection of metal Tubes Unwanted factors Reflection / refraction Aperture stop Planar-convex lens alignment Incident to planar incident to convex Reflection of metal Tubes Laser output Laser with tube Unwanted factors Reflection / refraction Sensor and glass substrate reflection Sensor glass reflection/refraction Aperture stop larger aperture smaller aperture
Be focused like a laser
November 22, 2023
“The power of focusing can be seen in light. Diffused light has little power or impact, but you can concentrate its energy by focusing it. With a magnifying glass, the rays of the sun can be focused to set grass or paper on fire. When light is focused even more as a laser beam, it can cut through steel.” This passage stopped me in my tracks when I recently revisited “The Purpose Driven Life,” a book gifted to me by a professor 18 years ago when I was a sophomore. Like light itself, ideas from our past can lie dormant and diffused in our minds until the right moment brings them into sharp focus. What struck me most was the…
새해를 맞으며
January 1, 2023
写在前面 师者之心 师承有脉 有教无类 克己复礼 性别平等 厚德载物 写在前面 2022 年 10 月，我躺在吉达 Fakeeh 医院的病床上，收到师兄传来导师病危的消息。双臂布满点滴针眼的我，几乎动弹不得，却仍摸索着手机回复邮件。从得知他手术到确认他离世，我始终抱着生命会有奇迹的幻想。11 月 7 日，当噩耗传来时，我正服用着镇痛药，内心的剧痛与身体的灼痛如潮水般撕扯着我。此后多次试图提笔记录，却总是在打开文档时泣不成声 —— 对我而言，导师是父亲、良师、挚友的三重化身，是支撑我坚守理想主义的精神支柱。他的离去，连同生活中的种种变故，让我一度精神恍惚，在坚持与放弃间反复挣扎。今日，终于借着几分酒意，整理这些凌乱的思绪。 2024 年 4 月 28 日 @ Tucson 师者之心 我的导师 Byoungho Lee 教授是一位充满情怀的学者。他常在实验室网页的留言板上分享见闻、记录心得：或是祝贺团队的学术突破，或是通报生活琐事，或是推荐读过的书籍与领域新动态。每年元旦撰文迎新的传统，他从 2003 年一直延续到 2021 年，从未…
The Ideal Manager for Computational Imaging
December 10, 2022
Understanding the Cross-Disciplinary Challenge The Foundation: Optical Hardware Expertise The Engine: Computational Techniques The Bridge: Signal and Image Processing The Communication Challenge The Imperative of Continuous Learning Building Effective Teams Looking Forward Conclusion References The field of computational imaging stands at a fascinating crossroads where optical hardware meets computational algorithms and signal processing. As someone who has worked in both computer science and optical engineering departments, I’ve witnessed firsthand how this convergence creates both exciting opportunities and unique challenges. Perhaps the most critical challenge is finding managers who can effectively navigate this interdisciplinary landscape. Understanding the Cross-Disciplinary Challenge Unlike traditional imaging systems where optics and computation remain separate domains, computational imaging fundamentally interweaves these disciplines. This integration goes beyond simple…