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368 Results Found

  • Article
  • Open Access
4 Citations
2,951 Views
15 Pages

17 February 2024

Depending on various design conditions, including optics and circuit design, the image-forming characteristics of the modulated transfer function (MTF), which affect the spatial resolution of a digital image, may vary among image channels within or b...

  • Article
  • Open Access
22 Citations
16,186 Views
19 Pages

MTF Measurement by Slanted-Edge Method Based on Improved Zernike Moments

  • Shuo Zhang,
  • Fengyan Wang,
  • Xiang Wu and
  • Kangzhe Gao

2 January 2023

The modulation transfer function (MTF) is an important parameter for performance evaluation of optical imaging systems in photogrammetry and remote sensing; the slanted-edge method is one of the main methods for measuring MTF. To solve the problem of...

  • Article
  • Open Access
2,705 Views
25 Pages

22 February 2025

In the development, evaluation, and application of medical flat-panel detectors, the modulation transfer function (MTF) is crucial, as it reflects the device’s ability to restore detailed information. Medical flat-panel detectors encompass both...

  • Article
  • Open Access
2 Citations
3,083 Views
13 Pages

21 March 2023

(1) Background: Metal homeostasis is an important part of cellular programs and is disrupted when cells are exposed to carcinogenic heavy metals. Metal response is mediated by the metal response element transcription factor MTF-1. However, where MTF-...

  • Article
  • Open Access
4 Citations
5,047 Views
18 Pages

Improved On-Orbit MTF Measurement Method Based on Point Source Arrays

  • Litao Li,
  • Jiayang Cao,
  • Shaodong Wei,
  • Yonghua Jiang and
  • Xin Shen

14 August 2023

The modulation transfer function (MTF) is a key characteristic used to assess the performance of optical remote sensing satellite sensors. MTF detection can directly measure a sensor’s two-dimensional (2D) point spread function (PSF); therefore...

  • Article
  • Open Access
2 Citations
7,585 Views
16 Pages

Analysis of MTF in TDI-CCD Subpixel Dynamic Super-Resolution Imaging by Beam Splitter

  • Kun Gao,
  • Lu Han,
  • Hongmiao Liu,
  • Zeyang Dou,
  • Guoqiang Ni and
  • Yingjie Zhou

5 September 2017

The subpixel dynamic imaging technique of a beam splitter is one of the most effective super-resolution imaging methods. Aiming to create a linear time delay integration charge coupled device (TDI–CCD) subpixel imaging system based on the optical ass...

  • Article
  • Open Access
13 Citations
4,494 Views
15 Pages

Influence of the System MTF on the On-Board Lossless Compression of Hyperspectral Raw Data

  • Bruno Aiazzi,
  • Massimo Selva,
  • Alberto Arienzo and
  • Stefano Baronti

2 April 2019

A noticeable topic to be pursued in the field of on-board real-time data processing is the influence of the modulation transfer function (MTF) of the image acquisition system on the lossless compressibility of raw (that is, uncalibrated) hyperspectra...

  • Article
  • Open Access
1 Citations
1,739 Views
18 Pages

2 June 2025

To comprehensively leverage the temporal, static, and dynamic information features of multi-channel surface electromyography (sEMG) signals for gesture recognition, considering the sensitive temporal characteristics of sEMG signals to action amplitud...

  • Article
  • Open Access
9 Citations
3,048 Views
11 Pages

Point-of-Care Testing of the MTF1 Osteoarthritis Biomarker Using Phenolphthalein-Soaked Swabs

  • So Yeon Park,
  • Dong-Sik Chae,
  • Jae Sun Lee,
  • Byung-Ki Cho and
  • Nae Yoon Lee

10 May 2023

Osteoarthritis (OA) is the most common joint disease, which accompanies pain and inconvenience in daily life owing to degradation of cartilage and adjacent tissues. In this study, we propose a simple point-of-care testing (POCT) kit for the detection...

  • Review
  • Open Access
5 Citations
3,542 Views
22 Pages

Tissue-Specific Tumour Suppressor and Oncogenic Activities of the Polycomb-like Protein MTF2

  • Mzwanele Ngubo,
  • Fereshteh Moradi,
  • Caryn Y. Ito and
  • William L. Stanford

27 September 2023

The Polycomb repressive complex 2 (PRC2) is a conserved chromatin-remodelling complex that catalyses the trimethylation of histone H3 lysine 27 (H3K27me3), a mark associated with gene silencing. PRC2 regulates chromatin structure and gene expression...

  • Feature Paper
  • Article
  • Open Access
64 Citations
8,203 Views
16 Pages

20 January 2016

Aspergillus flavus produces a variety of toxic secondary metabolites; among them, the aflatoxins (AFs) are the most well known. These compounds are highly mutagenic and carcinogenic, particularly AFB1. A. flavus is capable of colonizing a number of e...

  • Article
  • Open Access
10 Citations
3,599 Views
10 Pages

23 December 2022

Metallothioneins (MTs) are cysteine-rich low-molecular-weight proteins that protect cells from heavy metal toxicity. MT1 and MT2 are considered ubiquitously expressed among the MT isoforms ranging from 1 to 4. These MT1 and MT2 transcriptions are reg...

  • Article
  • Open Access
12 Citations
2,779 Views
16 Pages

Epigallocatechin Gallate Promotes Cuproptosis via the MTF1/ATP7B Axis in Hepatocellular Carcinoma

  • Yuhan Fu,
  • Lirui Hou,
  • Kai Han,
  • Chong Zhao,
  • Hongbo Hu and
  • Shutao Yin

7 March 2025

Background: Cuproptosis is a form of copper-dependent non-apoptotic cell death. Cancer cells that prefer to use aerobic glycolysis for energy generation are commonly insensitive to cuproptosis, which hinders its application for cancer treatment. Epig...

  • Article
  • Open Access
1 Citations
1,776 Views
19 Pages

21 August 2024

In this paper, a multi-transmitting formula (MTF) was integrated into ANSYS software through secondary development, enabling dynamic finite element simulation of wave propagation in infinite domains. The numerical reliability and accuracy of the MTF...

  • Article
  • Open Access
7 Citations
3,433 Views
12 Pages

7 August 2020

The expressions of wave structure function (WSF) and long-exposure modulation transfer function (MTF) for laser beam propagation through non-Kolmogorov turbulence were derived in our previous work. In this paper, based on anisotropic maritime atmosph...

  • Article
  • Open Access
5 Citations
2,165 Views
27 Pages

SDP-MTF: A Composite Transfer Learning and Feature Fusion for Cross-Project Software Defect Prediction

  • Tianwei Lei,
  • Jingfeng Xue,
  • Duo Man,
  • Yong Wang,
  • Minghui Li and
  • Zixiao Kong

Software defect prediction is critical for improving software quality and reducing maintenance costs. In recent years, Cross-Project software defect prediction has garnered significant attention from researchers. This approach leverages transfer lear...

  • Article
  • Open Access
9 Citations
6,142 Views
24 Pages

12 December 2022

The modulation transfer function (MTF) is commonly used as an imaging quality criterion reflecting the spatial resolution capability of imaging systems. The modified edge methods based on ISO Standard 12233 are widely used in MTF measurement for vari...

  • Article
  • Open Access
5 Citations
2,983 Views
18 Pages

13 January 2022

Hormonal therapies for prostate cancer target the androgen receptor (AR) ligand-binding domain (LBD). Clinical development for inhibitors that bind to the N-terminal domain (NTD) of AR has yielded ralaniten and its analogues. Ralaniten acetate is wel...

  • Article
  • Open Access
2,682 Views
20 Pages

14 December 2024

In the optical satellite on-orbit imaging quality estimation system, the calculation of Modulation Transfer Function (MTF) is not fully standardized, and the influence of atmosphere is often simplified, making it difficult to obtain completely consis...

  • Review
  • Open Access
24 Citations
6,997 Views
17 Pages

The Hormetic Effect of Metformin: “Less Is More”?

  • Isabella Panfoli,
  • Alessandra Puddu,
  • Nadia Bertola,
  • Silvia Ravera and
  • Davide Maggi

Metformin (MTF) is the first-line therapy for type 2 diabetes (T2DM). The euglycemic effect of MTF is due to the inhibition of hepatic glucose production. Literature reports that the principal molecular mechanism of MTF is the activation of 5′-AMP-ac...

  • Article
  • Open Access
6 Citations
7,065 Views
12 Pages

Pharmacological Effects of the Water Fraction of Key Components in the Traditional Chinese Prescription Mai Tong Fang on 3T3-L1 Adipocytes and ob/ob Diabetic Mice

  • Liang Ma,
  • Li Huang,
  • Heying Pei,
  • Zhuowei Liu,
  • Caifeng Xie,
  • Lei Lei,
  • Xiaoxin Chen,
  • Haoyu Ye,
  • Aihua Peng and
  • Lijuan Chen

16 September 2014

Mai Tong Fang (MTF), a Chinese herbal combination, has been used for the treatment of diabetic nephropathy in traditional medical clinics in China. However, the anti-adipogenic and anti-hyperglycemic effects of MTF have not been fully elucidated, so...

  • Article
  • Open Access
4 Citations
3,121 Views
14 Pages

On-Orbit Modulation Transfer Function Estimation Based on the Refined Image Kernel

  • Yuanhang Wang,
  • Xing Zhong,
  • Zheng Qu,
  • Lei Li,
  • Sipeng Wu and
  • Chaoli Zeng

28 April 2023

To overcome the limitations of traditional on-orbit modulation function transfer (MTF) measurement methods that are heavily dependent on natural features, scenery, artificial edges, and point source targets, this paper presents an on-orbit MTF measur...

  • Article
  • Open Access
21 Citations
2,692 Views
19 Pages

Intelligent Diagnosis of Rolling Bearings Fault Based on Multisignal Fusion and MTF-ResNet

  • Kecheng He,
  • Yanwei Xu,
  • Yun Wang,
  • Junhua Wang and
  • Tancheng Xie

10 July 2023

Existing diagnosis methods for bearing faults often neglect the temporal correlation of signals, resulting in easy loss of crucial information. Moreover, these methods struggle to adapt to complex working conditions for bearing fault feature extracti...

  • Article
  • Open Access
6 Citations
11,139 Views
9 Pages

Gender-Based Differences in Actual Thumb Force Exertions at Various Target Force Levels

  • Kyeong-Hee Choi,
  • Jae-Kyeong Kim,
  • Hyun-Ho Shim and
  • Yong-Ku Kong

25 December 2019

Measurement of thumb force in the industrial filed is important to quantify the risk of manual tasks. However, few studies have assessed the thumb force. Therefore, the purpose of this study was to investigate the relationship between actual thumb fo...

  • Article
  • Open Access
12 Citations
3,153 Views
17 Pages

3 September 2022

Autonomous driving technology and vehicle-to-vehicle communication technology make the hybrid driving of connected and automated vehicles (CAVs) and regular vehicles (RVs) a long-existing phenomenon in the coming future. Among the existing studies, I...

  • Article
  • Open Access
6 Citations
6,502 Views
21 Pages

12 December 2023

The modulation transfer function (MTF) serves as a crucial technical index for assessing the imaging quality of remote sensing cameras, which is integral throughout their entire operational cycle. Currently, the MTF evaluation of remote sensing camer...

  • Article
  • Open Access
288 Views
18 Pages

27 January 2026

Endoscopes are widely used in medicine, making objective evaluation of imaging performance essential for device development and quality assurance. Image resolution is commonly characterized by the modulation transfer function (MTF); however, its inte...

  • Article
  • Open Access
4 Citations
4,574 Views
19 Pages

Research on the Modulation Transfer Function Detection Method of a Bayer Filter Color Camera

  • Yuan-Peng Fan,
  • Lei Wei,
  • Lin Li,
  • Lin Yang,
  • Zi-Qiang Hu,
  • Yuan-Hao Zheng and
  • Yu-Hao Wang

1 May 2023

Bayer filter color cameras are more and more widely used in the field of aerospace remote sensing, but the Bayer filter causes great degradation in image quality; therefore, obtaining a means of achieving the high-precision measurement of the modulat...

  • Technical Note
  • Open Access
2 Citations
1,747 Views
16 Pages

12 December 2024

After the launch of a high-resolution remote sensing satellite, representative spatial quality estimators (RER, FWHM, MTF50, MTFA) are measured from images taken of ground Edge targets. In this work, the best spatial quality estimator is proposed by...

  • Technical Note
  • Open Access
6 Citations
2,756 Views
14 Pages

4 March 2024

Unmanned aerial vehicle (UAV) photogrammetry is an emerging means of acquiring high-precision rapid spatial information and data because it is cost-effective and highly efficient. However, securing uniform quality in the results of UAV photogrammetry...

  • Article
  • Open Access
833 Views
26 Pages

30 August 2025

In order to improve the localization accuracy and model interpretability of single-phase ground fault sections in distribution networks, a knowledge-integrated and data-driven fault localization model is proposed. The model transforms the transient z...

  • Article
  • Open Access
294 Views
13 Pages

Autofocusing Method Based on Dynamic Modulation Transfer Function Feedback

  • Zhijing Fang,
  • Yuanzhang Song,
  • Bing Han,
  • Anbang Wang,
  • Jian Song and
  • Hangyu Yue

24 January 2026

Accurate measurement of key optical system parameters (such as focal length, distortion, and modulation transfer function (MTF)) depends critically on obtaining sharp images. Conventional autofocus methods are susceptible to noise in complex imaging...

  • Letter
  • Open Access
20 Citations
7,247 Views
10 Pages

22 January 2018

Wald’s protocol is the most widely accepted protocol to assess pan-sharpening algorithms. In particular, the synthesis property—which is usually validated on a reduced scale—is thought to be a necessary and sufficient condition of a success image fus...

  • Article
  • Open Access
3 Citations
4,361 Views
19 Pages

Spatial Distortion Assessments of a Low-Cost Laboratory and Field Hyperspectral Imaging System

  • Andrija Krtalić,
  • Vanja Miljković,
  • Dubravko Gajski and
  • Ivan Racetin

1 October 2019

This article describes the adaptation of an existing aerial hyperspectral imaging system in a low-cost setup for collecting hyperspectral data in laboratory and field environment and spatial distortion assessments. The imaging spectrometer system con...

  • Article
  • Open Access
849 Views
17 Pages

16 September 2025

With the rapid advancements that are occurring in space technology, there is an increasing demand for improvements in the image quality of high-resolution space optical telescopes. The optical performance of the primary mirror plays a crucial role in...

  • Article
  • Open Access
37 Citations
6,157 Views
21 Pages

6 October 2016

The effects of illumination and shooting distance on crack image recognition were investigated by examining cracks in images taken with a camera. In order to examine the effects, images of cracks in a concrete structure taken while varying the illumi...

  • Article
  • Open Access
8 Citations
9,808 Views
14 Pages

21 September 2015

This paper proposes using a liquid lens as a compensating lens and applying intermediate optics to achieve a 9× zoom ratio. The droplet shape and location of the liquid lens can be adjusted reversibly, enabling the focal length and position of the le...

  • Article
  • Open Access
12 Citations
1,977 Views
19 Pages

12 June 2024

To address the problems of existing methods that struggle to effectively extract fault features and unstable model training using unbalanced data, this paper proposes a new fault diagnosis method for rolling bearings based on a Markov Transition Fiel...

  • Article
  • Open Access
4 Citations
3,630 Views
9 Pages

13 December 2019

In this work, we fabricated dual-band 800 × 2 short-wave infrared (SWIR) indium gallium arsenide (InGaAs) focal-plane arrays (FPAs) using N-InP/i-In0.53Ga0.47As/N-InP double-heterostructure materials, which are often applied in ocean-color remo...

  • Article
  • Open Access
4 Citations
2,135 Views
18 Pages

A Study on Partial Discharge Fault Identification in GIS Based on Swin Transformer-AFPN-LSTM Architecture

  • Jiawei Li,
  • Shangang Ma,
  • Fubao Jin,
  • Ruiting Zhao,
  • Qiang Zhang and
  • Jiawen Xie

6 February 2025

Aiming at the problem of manual feature extraction and insufficient mining of feature information for partial discharge pattern recognition under different insulation faults in GIS, a deep learning model based on phase and timing features with Swin T...

  • Article
  • Open Access
286 Views
16 Pages

Optical Performance of RayOne EMV and Tecnis Synergy Under Varying Pupil Sizes and Corneal Aberrations

  • Juan J. Miret,
  • Vicente J. Camps,
  • Celia García,
  • Maria T. Caballero,
  • Ana B. Plaza-Puche,
  • Antonio Sempere-Molina and
  • Juan M. Gonzalez-Leal

30 January 2026

Background/Objectives: Premium intraocular lenses (IOLs) are increasingly being selected for cataract and refractive lens surgery, but their functional performance depends critically on pupil size and corneal spherical aberration (SA). This study eva...

  • Article
  • Open Access
3 Citations
2,918 Views
21 Pages

Restoration and Calibration of Tilting Hyperspectral Super-Resolution Image

  • Xizhen Zhang,
  • Aiwu Zhang,
  • Mengnan Li,
  • Lulu Liu and
  • Xiaoyan Kang

15 August 2020

Tilting sampling is a novel sampling mode for achieving a higher resolution of hyperspectral imagery. However, most studies on the tilting image have only focused on a single band, which loses the features of hyperspectral imagery. This study focuses...

  • Article
  • Open Access
3 Citations
2,325 Views
11 Pages

The NIMO TEMPO (Lambda-X, Nivelles, Belgium) is a novel, user-friendly and compact device designed for in vitro optical analysis of refractive and diffractive intraocular lenses (IOLs). This device analyzes the IOL wavefront and generates a synthetic...

  • Article
  • Open Access
28 Citations
5,032 Views
20 Pages

12 June 2022

With the development of the autopilot system, the main task of a pilot has changed from controlling the aircraft to supervising the autopilot system and making critical decisions. Therefore, the human–machine interaction system needs to be impr...

  • Article
  • Open Access
4 Citations
2,182 Views
16 Pages

Cadmium–Zinc Interaction in Mus musculus Fibroblasts

  • Ettore Priante,
  • Edoardo Pietropoli,
  • Elisabetta Piva,
  • Gianfranco Santovito,
  • Sophia Schumann and
  • Paola Irato

9 October 2022

This work aimed to evaluate the effects of zinc (Zn) relating to cadmium (Cd)-induced toxicity and the role played by MTF-1. This transcription factor regulates the expression of genes encoding metallothioneins (MTs), some Zn transporters and the hea...

  • Article
  • Open Access

Multimodal Fault Diagnosis of Rolling Bearings Based on GRU–ResNet–CBAM

  • Kunbo Xu,
  • Jingyang Zhang,
  • Dongjun Liu,
  • Chaoge Wang,
  • Ran Wang and
  • Funa Zhou

11 March 2026

Rolling bearings exhibit nonlinear and non-stationary fault signals under complex working conditions, rendering single-modal representation insufficient for accurate diagnosis. To address this limitation, this paper proposes a novel parallel multimod...

  • Article
  • Open Access
3 Citations
3,738 Views
10 Pages

Design and Optical Analysis of a Refractive Aspheric Intraocular Lens with Extended Depth of Focus

  • Kunqi Li,
  • Xiaoqin Chen,
  • Yayan Bian,
  • Yuwei Xing,
  • Xiaolan Li,
  • Dongyu Liu and
  • Yongji Liu

31 January 2023

To obtain a continuous range of clear vision for pseudophakic eyes, a design of intraocular lens (IOL) with extended depth of focus (EDoF) was proposed. The IOL was optimized with a multi-configuration approach based on a pseudophakic eye model and t...

  • Review
  • Open Access
12 Citations
4,938 Views
15 Pages

18 April 2023

Polycomb-like proteins (PCLs) are a crucial group of proteins associated with the Polycomb repressive complex 2 (PRC2) and are responsible for setting up the PRC2.1 subcomplex. In the vertebrate system, three homologous PCLs exist: PHF1 (PCL1), MTF2...

  • Article
  • Open Access
11 Citations
3,053 Views
12 Pages

26 August 2020

ZIP (zinc-regulated transporters, iron-regulated transporter-like protein) family plays an important role in organism Zn balance. This research identified the promoter regions of ZIP3 and ZIP8, two members of ZIP family, from a freshwater teleost yel...

  • Article
  • Open Access
11 Citations
5,637 Views
14 Pages

27 August 2022

This paper presents the optimization design of a miniaturized five-element wide-angle fisheye lens using a deep learning algorithm. Zemax optical design software was used to simulate and optimize the wide-angle fisheye lens. A deep learning algorithm...

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