We keep our content available to everyone. Consider supporting Science X's mission by getting a premium account.

One common type of aberration is chromatic aberration, which is related to color. Since the index of refraction of lenses depends on color or wavelength, images ...

Despite the Restore-CycleGAN-GALOF's superior performance, the system design and experimental process are relatively simple. The scientists summarized the significance of their imaging method: "Accessing the distal end of fiber devices and collecting sufficient training data are challenging in practical applications. The unique hollow organ or biological tissue environments impose additional difficulties in robust image transport."

Converging mirroris concave or convex

More information: Xiaowen Hu et al, Unsupervised full-color cellular image reconstruction through disordered optical fiber, Light: Science & Applications (2023). DOI: 10.1038/s41377-023-01183-6 Journal information: Light: Science & Applications

This system integrates a customized Cycle Generative Adversarial Network (CyleGAN), named Restore-CycleGAN, with Glass-Air Anderson Localizing Optical Fiber (GALOF). The application of Restore-CycleGAN removes the restrictions of labeled training data, yet maintains high-quality imaging recovery, while the unique physical properties of the GALOF's modes support high-fidelity and highly robust imaging processes and guarantee the successful implementation of unpaired imaging training.

Converging mirrorfocal length

"Yet, our Restore-CycleGAN-GALOF method requires only a small amount of training data and eliminates the need for pairing image features. In the small data regime, this method guarantees highly robust and strong generalizable full-color imaging. As a result, it is better suited to satisfy various practical biomedical applications."

Divergingmirror

Recently, supervised learning-based fiber-optic imaging methods have gained popularity due to their superior performance in recovering high-fidelity images from fiber-delivered degraded images or even scrambled speckle patterns. Despite their success, these methods are fundamentally limited by their requirements for strictly-paired labeling and large training datasets.

This article has been reviewed according to Science X's editorial process and policies. Editors have highlighted the following attributes while ensuring the content's credibility:

Due to the mutual promotion between the learning algorithm and optical devices, the Restore-CycleGAN-GALOF method achieves nearly artifact-free and robust transport of full-color biological images through a meter-long optical fiber using a simple one-shot training process with a small training dataset of only 1000 image pairs, without requiring paired training imaging data. The training data size is reduced by about ten times compared to previously reported supervised learning methods.

Unlike the Wratten 25A filter, the Wratten 15 does not block green light, so the green channel is more useful for false color IR images and other visualizations ...

May 23, 2024 — Fiber lasers can cut cardboard and paper, offering precise and clean cuts without significant charring. Their efficiency and speed make them ...

Convexmirror

The demanding training data requirements result in time-consuming data acquisition, complicated experimental design, and tedious system calibration processes, making it challenging to satisfy practical application needs.

"Our techniques are expected to lay the foundation for the next-generation fiber-optic imaging system. Our future research will focus on developing practical endoscopy systems and conducting related biomedical application tests. We aspire to advance medical diagnosis and fundamental biological research through our methodology," the scientists added.

Converging mirrorexamples

Passion flower vines delicately climb upwards in this hand drawn trellis pattern. 'Passion Flower' is available in Corn, Geranium, Steel, and Leaf.

Product Description. The GorillaDrive takes external USB flash drives to the next rugged level. Made from a durable silicon compound and a metal loop, it can ...

The Restore-CycleGAN-GALOF method demonstrated high-fidelity, full-color image transport capabilities for various biological samples, including human and frog blood cells, human eosinophils, and human stomach cancer cells, under both transmission and reflection imaging modes.

In a recent publication in Light: Science & Applications, Dr. Jian Zhao from the Picower Institute for Learning and Memory at the Massachusetts Institute of Technology, Dr. Xiaowen Hu and Dr. Axel Schülzgen from the College of Optics and Photonics (CREOL) at the University of Central Florida, and their colleagues presented an unsupervised learning-based optical fiber imaging system.

Converging mirroris also known as

Furthermore, this imaging process exhibited resilience against 60-degree strong mechanical fiber bending and large working distance variations of up to 6 millimeters. Remarkably, the Restore-CycleGAN-GALOF method produced high-accuracy predictions for test data that were never included in the training process, indicating strong generalization in the small data regime.

Converging mirrorand divergingmirror

Aug 2, 2024 — Anti-Reflective Coating on Glasses: Is It Worth It? ... Anti-reflective coating on eyeglasses costs more, but it may be beneficial in specific ...

FRESNEL LENS Sizes, Quantities, and Costs. Number in U.S.. ORDER, Radius mm, Radius inches, Height inches, Weight in Pounds, Number Built, 1900, 1922, 1945 ...

Converging mirroruses

A leading supplier of comparators, ST's portfolio offers: Our automotive-grade products are AEC-Q100 qualified and tested with certified high-reliability flow.

Fiber-optic imaging methods enable in vivo imaging deep inside hollow organs or tissues that are otherwise inaccessible to free-space optical techniques, playing a vital role in clinical practice and fundamental research, such as endoscopic diagnosis and deep-brain imaging.

Sep 30, 2024 — ... field, perspective and other ... camera, it is crucial that you understand angle of view. ... angle, standard and telephoto. As each type ...

The simplest focal length definition is a description of the distance between the center of a lens and the image sensor when the lens is focused at infinity.

Get weekly and/or daily updates delivered to your inbox. You can unsubscribe at any time and we'll never share your details to third parties.

Use this form if you have come across a typo, inaccuracy or would like to send an edit request for the content on this page. For general inquiries, please use our contact form. For general feedback, use the public comments section below (please adhere to guidelines).

Your email address is used only to let the recipient know who sent the email. Neither your address nor the recipient's address will be used for any other purpose. The information you enter will appear in your e-mail message and is not retained by Phys.org in any form.