The integration of intelligent spore image sequence capture device is designed for capturing spores and then generates a series of images. Powdery mildew spore is an extremely harmful bacteria spore in agricultural crops. This paper mainly introduced a new method which could realize the automatic detection of the powdery mildew spores. The new method mainly included pre-processing, image segmentation, feature extraction and identification. Pre-processing included illumination compensation, graying, image enhancement. Image segmentation included binary, image smoothing. Finally identification used BP neural network method. Training pictures used 155 pictures and the correct rate was 95.5%. Testing took 89 pictures, and the correct rate was 63.6%. The result proved the validity and correctness of this method. Key Words-the image sequence capture device; powdery mildew spores image; automatic recognition I.

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