二维图像的投影和图像重建，直接傅里叶反变换法，先反投影后滤波，先滤波后反投影，卷积反投影(Two dimensional image projection and image reconstruction, direct Fourier inverse method, first backprojection, after filtering, first filter, back projection, convolution back projection)

图像处理，CT技术，图像的重建通过一维投影复原二维图像由Matlab实现(Image processing, CT technology, image reconstruction by one-dimensional projection restoration of two-dimensional images by Matlab)

根据扫描后所得到的吸收点，可进行图像重建，得到原物体的图像(we can use this code to complete the function of picture restruction according to the points which is given .)

S-L头模型图像重建，分别进行了直接反投影与滤波反投影。(Head model reconstruction,Filtered back projection.)