Related Experiment Video
Updated: Jun 23, 2026
13:38
Laser-Induced Fluorescence Emission (L.I.F.E.) as Novel Non-Invasive Tool for In-Situ Measurements of Biomarkers in Cryospheric Habitats
Published on: October 26, 2019
Flame front tracking by laser induced fluorescence spectroscopy and advanced image analysis
Optics Express
|May 7, 2009
Summary
Advanced image analysis techniques precisely isolate and track turbulent flame boundaries from high-speed Planar Laser Induced Fluorescence (PLIF) data. These methods enhance understanding of flame dynamics and combustion processes.
Area of Science:
- Combustion Science
- Fluid Dynamics
- Optical Diagnostics
Background:
- Turbulent flames present complex dynamics challenging traditional analysis.
- High-speed imaging is crucial for capturing transient flame behavior.
- Accurate flame boundary detection is essential for quantitative analysis.
Purpose of the Study:
- To present advanced image analysis methods for turbulent flame data.
- To detail the application of specific filtering and contour detection techniques.
- To demonstrate temporal tracking of flame boundaries.
Main Methods:
- Non-linear anisotropic diffusion filtering for noise reduction and feature enhancement.
- Active Contour Models (Snakes) for precise flame boundary segmentation.
- Frequency domain contour interpolation for robust temporal tracking.
Main Results:
- Successful isolation of flame boundaries from high-speed PLIF data.
- Demonstrated capability to track flame boundary dynamics over time.
- Implementation details and potential applications are discussed.
Conclusions:
- The presented image analysis methods effectively extract information from turbulent flame PLIF data.
- These techniques offer a robust approach for studying flame dynamics.
- The methods have potential applications in combustion research and diagnostics.
Related Concept Videos
01:02Flame Photometry: Overview
Flame photometry, also known as flame emission spectrometry, is a technique used for the qualitative and quantitative analysis of elements present in a sample using a flame as the source of excitation energy. The concept of flame photometry was realized in the early 1860s by Kirchhoff and Bunsen, who discovered that specific elements emit characteristic radiation when excited in flames. The first instrument developed for this purpose was used to measure sodium (Na) in plant ash using a Bunsen...
01:16Confocal Fluorescence Microscopy
Confocal microscopy is an advanced microscopic technique. The prime advantage of the confocal microscope over other microscopy techniques is its ability to block the out-of-focus light from the illuminated samples using pinholes. It is widely used with fluorescence optics to obtain high-resolution, sharp contrast images. Unlike optical microscopes, confocal microscopes use a focused beam of light laser to scan the entire sample surface at different z-planes. These microscopes are, therefore,...
01:16Flame Photometry: Lab
In a flame photometer, when a solution like potassium chloride is aspirated into the flame, the solvent evaporates, leaving behind dehydrated salt. This salt dissociates into free gaseous atoms in their ground state. Some of these atoms absorb energy from the flame, leading to their excitation. The excited atoms return to the ground state, emitting photons at characteristic wavelengths. Because only electronic transitions are involved, the resulting emission lines are very narrow. The intensity...
01:29Atomic Fluorescence Spectroscopy
Atomic fluorescence spectroscopy (AFS) is an analytical technique that involves the electronic transitions of atoms in a flame, furnace, or plasma being excited by electromagnetic (EM) radiation. When these atoms absorb energy, they become excited and subsequently release energy as they return to their original state. This emitted light, or "fluorescence," is observed at a right angle to the incident beam. Both absorption and emission processes transpire at distinct wavelengths, which are...
01:05Total Internal Reflection Fluorescence Microscopy
Total internal reflection fluorescence microscopy or TIRF is an advanced microscopic technique used to visualize fluorophores in samples close to a solid surface with a higher refractive index, such as a glass coverslip. TIRF only allows fluorophores in proximity to the solid surface to be excited. When light from a medium with a lower refractive index (such as air) hits the glass coverslip at a critical angle, the light undergoes total internal reflection stead of passing through the glass.