Porous ceramic surface roughness detection method and system based on image processing

The invention provides a porous ceramic surface roughness detection method and system based on image processing, and the method comprises the steps: obtaining a surface image of porous ceramic, and carrying out the gray processing of the surface image, and obtaining a gray image of the surface image; generating a transverse characteristic spectrum and a longitudinal characteristic spectrum of the grayscale image, and respectively splitting the transverse characteristic spectrum and the longitudinal characteristic spectrum into transverse spectrum sub-blocks and longitudinal spectrum sub-blocks; calculating a transverse residual error corresponding to the transverse map sub-block, and calculating a longitudinal residual error corresponding to the longitudinal map sub-block; and fusing the transverse residual error and the longitudinal residual error, and determining the surface roughness of the porous ceramic according to the fused residual error information. According to the invention, the convenience of surf