It is an advanced technique to detect the pulverized coal flame in boiler furnace with digital image processing. This technique has been basically mastered now by Shanghai Jiaotong University and an algorithm of digital image processing is developed then
with which the combustion conditions in utility boiler furnace can be judged. Now this algorithm has been applied to a new flame detector developed by this university
and the new flame detector runs satisfactorily in Jinzhou power plant.