GDI喷雾数字图像处理研究

n image processing program with good instantaneity for GDI spray based on MATLAB GUI was designed and the program can realize visual operation interface. As gasoline is fuel with great volatile, the spray boundary of GDI image is relative obscure and SNR of the spray image is not that satisfied compared with image in diesel injection. To get the accurate spray penetration, cone angle, perimeter, area and other needed parameters, the spray boundary should be precisely extracted in the image processing. To solve this, noise filtering, boundary detection ，morphological analysis and other related methods should be used. After the spray boundary is obtained, program to calculate spray penetration, cone angle, injection velocity and other parameters can be developed to realize real-time measurement of spray parameters.