DETECTION OF SMOKING AND DUST GENERATION BY IMAGE PROCESSING

PURPOSE:To prevent smoking and dust generation caused by one' s own industrial plant as a pollution source by comparing and judging the standard image which is obtained by dividing an inmage taken repeatedly in a fixed visible field into image elements, the different image from the real time image, and weather condition data. CONSTITUTION:Images in a fixed visible field are repeatedly taken by a camera. After changing images changeble by sunshine, rain falling, etc., like dust generating and smoking images of a converter steelmaking plant of an iron-manufacturing company are divided into image elements and the moving average of the image elements of several images is calculated, the difference between the brightness of each image element of a real-time changing image and that of the calculated result is calculated. Dust generation and smoking are judged based on the difference images and the resulting signal is supplied to a computer 54. At the same time, wind direction, wind speed, and sunshine data are sent to the computer 54 from a weather condition detecting part 52 and further image pattern information for respective pollution sources are sent to the computer 54 from an image pattern refering part 53. Those three kinds of signals are compared and refered to distinguish the pollution source quickly. Consequently, dust generation and smoking are found in an extremely early stage and emergency treatment becomes possible.