Results 51 to 60 of about 168,029,963 (264)

Evaluation of Focus Metrics in Extended Depth-of-field Reconstruction

, 2018
The performance of focus metrics in the evaluation of refocused images from light fields is investigated in this paper. To this aim, the paper presents a comprehensive study on the performance of a large set of different focus metrics (34 in total) in ...
Filipe, Jose N., Távora, Luis M.N., Assunção, Pedro A. A., Faria, Sérgio M. M. de, Fonseca-Pinto, Rui   +4 more
core   +1 more source

All-in-focus image fusion for extended depth-of-field and 3D morphology recovery [PDF]

EPJ Web of Conferences
We present a computationally efficient all-in-focus image fusion algorithm for z-stack microscopy data of biological samples. We employ the Modulus of Gradient of Color planes (MGC), which aggregates gradient magnitudes from all three RGB channels to ...
Cerda Teresa, Toxqui-Quitl Carina, Padilla-Vivanco Alfonso   +2 more
doaj   +1 more source

Freeform optics for variable extended depth of field imaging

Optics Express, 2021
Imaging depth of field is shallow in applications with high magnification and high numerical aperture, such as microscopy, resulting in images with in- and out-of-focus regions. Therefore, methods to extend depth of field are of particular interest. Researchers have previously shown the advantages of using freeform components to extend depth of field ...
Sara Moein, Thomas J. Suleski
openaire   +2 more sources

Ligand‐dependent transcriptional heterogeneity in cell cycle gene expression delays G1/S entry

FEBS Letters, EarlyView.
EGF and HRG induce distinct G1/S progression programs in ErbB2‐amplified BT474 breast cancer cells. Despite activating the potent ErbB2–ErbB3 heterodimer, HRG does not accelerate cell‐cycle entry. Instead, EGF promotes earlier restriction‐point passage via ERK–FOS signaling, whereas HRG activates the AKT–MYC axis, driving transcriptional heterogeneity ...
Ririn Rahmala Febri, Ayaka Nagasato‐Ichikawa, Keita Iida, Shuhei Kimura, Akira Imamoto, Mariko Okada   +5 more
wiley   +1 more source

Extending the depth-of-field of imaging systems with a scattering diffuser [PDF]

Scientific Reports, 2019
AbstractLarge depth of field (DOF) is a longstanding goal in optical imaging field. In this paper we presented a simple but efficient method to extend the DOF of a diffraction-limited imaging system using a thin scattering diffuser. The DOF characteristic of the imaging system with random phase modulation was analyzed based on the analytical model of ...
Meihua Liao, Dajiang Lu, Giancarlo Pedrini, Wolfgang Osten, Guohai Situ, Wenqi He, Xiang Peng   +6 more
openaire   +2 more sources

Artificial molecular machines and motors—Design and control of nanoscale motion

FEBS Letters, EarlyView.
Molecules are constantly moving because of thermal fluctuations, but random motion alone cannot be exploited to perform directional tasks. Artificial molecular machines use chemical, electrical, or light energy to bias this motion. Molecular shuttles, rotary motors, and supramolecular pumps illustrate how nanoscale movement can be controlled and ...
Leonardo Andreoni, Alberto Credi
wiley   +1 more source

Flow Enabled Target Capture Halbach‐based magnetic enrichment increases circulating tumor cell capture from blood in metastatic cancer patients

Molecular Oncology, EarlyView.
Pair‐wise comparison of the CellSearch and FETCH enrichment technologies for circulating tumor cells (CTCs) from metastatic breast, prostate, and small cell lung cancer patients shows an increased capture of CTCs using FETCH enrichment. The clinical implementation of circulating tumor cells (CTCs) as a predictive tool for therapy efficacy in the ...
Michiel Stevens, Anouk Mentink, Tom Niessink, Frank Coumans, Leonie Mekenkamp, Ruchi Bansal, Jeroen Hiltermann   +6 more
wiley   +1 more source

Extending Depth of Field for Varifocal Multiview Images

CoRR
Optical imaging systems are generally limited by the depth of field because of the nature of the optics. Therefore, extending depth of field (EDoF) is a fundamental task for meeting the requirements of emerging visual applications. To solve this task, the common practice is using multi-focus images from a single viewpoint.
Zhilong Li, Kejun Wu, Qiong Liu, You Yang   +3 more
openaire   +3 more sources

Extended depth of field of an imaging system with an annular aperture

Optics Express, 2023
A common drawback of high-resolution optical imaging systems is a short depth of field. In this work, we address this problem by considering a 4 f -type imaging system with a ring-shaped aperture in the front focal plane of the second lens.
Shevchenko, Andriy, Hilden, Panu
openaire   +4 more sources

Spatial and single‐nuclei transcriptomics reveals idiosyncratic and generic patterns in papillary and anaplastic thyroid cancers

Molecular Oncology, EarlyView.
Matched spatial transcriptomics and single‐nuclei RNA‐seq were generated for anaplastic and BRAFV600E papillary thyroid cancers revealing generic and tumor‐specific states occurring in cancer cells and in the tumor microenvironment. In this context, cancer dedifferentiation mirrored organoid maturation through ordered thyroid marker gain/loss ...
Adrien Tourneur, Joel Rodrigues Vitória, Manuel Saiselet, Ligia Craciun, Denis Larsimont, Anne Lefort, Frédérick Libert, Carine Maenhaut, Sabine Costagliola, Maxime Tarabichi, Mirian Romitti, Vincent Detours   +11 more
wiley   +1 more source