Related Experiment Video
Updated: Jun 3, 2026
08:51
The Use of Thermal Infra-Red Imaging to Detect Delayed Onset Muscle Soreness
Published on: January 22, 2012
[Study on photographing experiment of infrared detector]
1Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China. wangdj04@live.cn
Guang Pu Xue Yu Guang Pu Fen Xi = Guang Pu
|March 25, 2011
Summary
This study presents a verification system for infrared time delay integration (TDI) cameras, crucial for multispectral remote sensing. The system optimizes image quality by addressing motion and focusing, achieving a resolution of 11.3 lines/mm.
Area of Science:
- Optics and Photonics
- Remote Sensing Technology
- Image Processing
Context:
- Infrared detectors are integral to multispectral remote sensing systems.
- Verification of infrared time delay integration (TDI) detector principles is essential for advancing remote sensing capabilities.
- Existing systems require robust methods for assessing image quality.
Purpose:
- To propose and establish a verification system for infrared TDI cameras.
- To analyze and mitigate factors affecting image quality in infrared TDI systems.
- To prepare for future research and development in infrared remote sensing.
Summary:
- A novel verification system for infrared TDI cameras was developed.
- Image motion was analyzed, and a high-precision DC-speed machine architecture was implemented, with velocity and line transfer frequency determined by Kalman algorithm.
- Video signal amplitude method was selected for focusing after analyzing four methods.
- The system was validated using drone targets, achieving a resolution of 11.3 lines/mm.
Impact:
- The developed system provides a reliable method for verifying infrared TDI camera performance.
- This research contributes to improving image quality in remote sensing applications.
- The findings support the advancement of infrared detection technology for various scientific and industrial uses.
Related Concept Videos
02:26Photoelectric Effect
When light of a particular wavelength strikes a metal surface, electrons are emitted. This is called the photoelectric effect. The minimum frequency of light that can cause such emission of electrons is called the threshold frequency, which is specific to the metal. Light with a frequency lower than the threshold frequency, even if it is of high intensity, cannot initiate the emission of electrons. However, when the frequency is higher than the threshold value, the number of electrons ejected...
01:25IR Spectrometers
There are two main infrared (IR) spectrophotometers: dispersive IR spectrometers and Fourier transform infrared (FTIR) spectrometers. In a dispersive IR spectrometer, a beam of infrared radiation produced by a hot wire is divided into two parallel equal-intensity beams using mirrors. One beam passes through the sample, while another is a reference beam. The beams then move through the monochromator, which separates the radiations into a continuous spectrum of different frequencies. The...
01:09Infrared (IR) Spectroscopy: Overview
When electromagnetic radiation passes through a material, atoms or molecules transition from a lower to a higher energy state by absorbing radiation corresponding to the energy difference between the two states. The absorption of infrared (IR) radiation causes transitions between vibrational energy levels in a molecule. Therefore, IR spectroscopy is a useful analytical tool for determining the molecular structure of molecules.
Different compounds display unique properties due to their...
Different compounds display unique properties due to their...
01:29Determination of Crystal Structures
In the late 1800s, the revelation that light extended beyond visible wavelengths led to the discovery of X-rays by Wilhelm Roentgen. Recognized as high-energy electromagnetic radiation with short wavelengths, X-rays prompted exploration into their interaction with crystals. Max von Laue proposed in 1912 that the periodic arrangement of atoms, ions, or molecules in crystals would cause them to diffract X-rays, a hypothesis confirmed through experiments with copper sulfate and zinc sulfide...
01:19IR Spectrum
When infrared (IR) radiation passes through a molecule, the bonds stretch or bend by absorbing the radiation. This absorption creates the molecule's absorption spectrum, which is the plot of its percentage transmittance versus wavenumber.
Transmittance is defined as the ratio of the radiant power passing through a sample to that from the radiation's source. Multiplying the transmittance by 100 gives the percent transmittance (%T), which varies between 100% (no absorption) and 0% (complete...
Transmittance is defined as the ratio of the radiant power passing through a sample to that from the radiation's source. Multiplying the transmittance by 100 gives the percent transmittance (%T), which varies between 100% (no absorption) and 0% (complete...
01:13Attenuated Total Reflectance (ATR) Infrared Spectroscopy: Overview
Attenuated total reflectance (ATR) infrared spectroscopy is a powerful analytical technique used to study the composition of materials. It is widely employed in chemistry, materials science, forensic science, and other fields where sample characterization is required. ATR has several advantages over traditional transmission IR spectroscopy, including the requirement of little to no sample preparation and the ability to analyze a wide range of samples.
The ATR process begins by directing a beam...
The ATR process begins by directing a beam...