due to the application of wavelet transform in the image compression, a wavelet histogram technique has been proposed in the literature, but its complexity is very high and the retrieval speed is also slow 由于小波变换在图像压缩中的应用,文献中提出了基于小波直方图的图像检索技术,但该技术的计算复杂性高,检索速度较慢。