shearlet工具箱。里面有基于剪切波的图像去噪算法，实验结果表叫，它较原有算法更好地实现去除噪声与保护图像细节之间的平衡-Threshold-based shearlet image denoising algorithm, called the results table, it better than the original algorithm to remove noise and to achieve a balance between preserving image deta