Zobrazeno 1 - 10
of 329
pro vyhledávání: '"varifocal"'
Publikováno v:
Optics, Vol 4, Iss 4, Pp 602-612 (2023)
Inside an optical Fourier processor, we inserted a varifocal system to continuously magnify the frequency of a master grating. The proposed system does not involve any mechanical compensation for scaling the Fourier spectrum. As the magnification, M,
Externí odkaz:
https://doaj.org/article/f9deb148d8bd4428a6bf27ac9345ef7f
Publikováno v:
Agronomy, Vol 14, Iss 8, p 1808 (2024)
The shape and quantity of Lentinus edodes (commonly known as shiitake) fruiting bodies significantly affect their quality and yield. Accurate and rapid segmentation of these fruiting bodies is crucial for quality grading and yield prediction. This st
Externí odkaz:
https://doaj.org/article/447631efce6c4d13affa0834d77fde58
Autor:
Yuxin Liu, Yu-Sheng Lin
Publikováno v:
Materials & Design, Vol 237, Iss , Pp 112631- (2024)
As ultrathin optical elements with subwavelength structures densely arranged, planar lens or called metalens can effectively focus incident wave. Due to the compact design and wide operating frequency of metalens, it becomes promising in applications
Externí odkaz:
https://doaj.org/article/1cc8c3919f75475caf00351d459000a9
Publikováno v:
Nanophotonics, Vol 12, Iss 6, Pp 1169-1176 (2023)
Metalenses exhibit a substantial potential in replacing traditional optical component as they present a methodology for miniaturization. Lenses with tunable focal lengths can play a key role in various fields with applications in imaging, displays, a
Externí odkaz:
https://doaj.org/article/d2079b42a1414ae38bfb89b37abc6ae0
Publikováno v:
Journal of Science: Advanced Materials and Devices, Vol 8, Iss 3, Pp 100560- (2023)
The correction of chromatic aberration is essential for promoting broadband imaging systems, which can be accomplished by recently proposed broadband achromatic metalenses (BAMs) in a more compact and efficient way compared to that of traditional opt
Externí odkaz:
https://doaj.org/article/ca429640f04c4ff58c66d56bb9641f80
Publikováno v:
IEEE Access, Vol 11, Pp 111079-111092 (2023)
Owing to the problems of missed detection, false detection, and low accuracy of the current fire detection algorithm, a segmentation detection algorithm, YOLO-SF, is proposed. This algorithm combines instance segmentation technology with the YOLOv7-T
Externí odkaz:
https://doaj.org/article/6d39113420384bd6be059cce55bb471e
Publikováno v:
IEEE Access, Vol 11, Pp 109179-109188 (2023)
With the continuous advancement of remote sensing technology, satellite remote sensing images have become one of the important means of obtaining information on the earth surface. But in the current research on aircraft target detection and classific
Externí odkaz:
https://doaj.org/article/0d51cf1f05824e2bb9868d62327cad7c
Publikováno v:
Nanophotonics, Vol 12, Iss 8, Pp 1373-1385 (2023)
Metalenses have potential to replace various bulky conventional optical elements with ultrathin nanostructure arrays. In particular, active metalenses with reconfigurable focusing capability have attracted considerable interest from the academic and
Externí odkaz:
https://doaj.org/article/2ab1a17d14334f278cc1101349a85ba0
Publikováno v:
Frontiers in Plant Science, Vol 14 (2023)
Fruit detection and recognition has an important impact on fruit and vegetable harvesting, yield prediction and growth information monitoring in the automation process of modern agriculture, and the actual complex environment of orchards poses some c
Externí odkaz:
https://doaj.org/article/d2047a7ae76c45b2ba101c5244277fed
Akademický článek
Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.
K zobrazení výsledku je třeba se přihlásit.