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The shape of a burner flame is an important characteristic closely linked to the burner configuration, fuel type, and other operational parameters of a combustion process. This paper presents an algorithm to extract the 3-D medial axis of a burner flame and use it as a descriptor for the flame shape characterization. The algorithm is based on the 2-D medial axes of two flame images captured from two...
The determination of flame or fire edges is the process of identifying a boundary between the area where there is thermochemical reaction and those without. It is a precursor to image-based flame monitoring, early fire detection, fire evaluation, and the determination of flame and fire parameters. Several traditional edge-detection methods have been tested to identify flame edges, but the results...
To meet the increasingly stringent standards on pollutant emissions, oxy-coal combustion technologies are being proposed for both existing and new coal-fired power plants. However, there is lack of research to characterize this new type of combustion flame due to the complicity of its structure and background noise. This paper presents a new computer algorithm to identify the combustion region in...
Digital image processing is playing an increasingly important part in imaging based flame monitoring systems. A crucial step in flame image processing is to detect the flame edge, a dividing boundary between the area where there is thermo-chemical reaction and those without. The determination of flame edges is a precursor to flame image processing and measurement of flame parameters. Several known...
Bayesian reconstruction or maximum a posteriori (MAP) method has its superiority over others with regard to image quality and convergence. In this paper, a MRF quadratic hybrid prior, which combines the two priors quadratic membrane (QM) prior and quadratic plate (QP) prior, is proposed. A threshold estimation method based on statistical classification is devised to facilitate a selectively utilization...
In electrical power generation there are many problems that may be solved through the application of image analysis. The presence of non ore gangue materials mixed with coal can have an impact on the combustion efficiency and emissions of power plants. Also known as tailings, often these materials are a hazardous byproduct of mining. Differentiation between coal and gangue is desirable for fuel quality...
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