the two images of the object is imaged by changing the projecting parameter of the sinusoidal grating, then, to deal with the modulation depth from defocus obtains the dense depth of the object.
该方法采用改变投射参数来拍摄物体的两幅图像,通过计算图像的调制度分布来获得物体的三维分布。该方法不但可使三维测量的空间分辨率达到单个像素,而且扩大了离焦三维测量的使用范围。