A method of processing the atomization image and detecting the spray angle

This paper introduces a computer image vision method.Taking advantage of the powerful image processing function in MATLAB,the atomization image taken by a video camera was pre-processed with de-noise processing and binaryzation processing.And the image edges were extracted.Then the irregular edges of atomization image were fitted to regression lines using the least square fitting function.Two intersected straight lines most approximative to the edges were obtained.The angle between the two lines was just the wanted atomization angle.According to the definition of least square fit,its error sum of squares is the least.Thus,the precision for determining the atomization angle is improved greatly.