Recovering Shape of Unfolded Books Surface from a Scanner Image Using Eigenspace Method

3D Shape Reconstruction of Unfolded Book Surface from a Scanner Image -Shape from Shading with Interreflections under Proximal Light Source

In this paper, we propose an efficient and stable algorithm to recover the 3D shape of an unfolded curved book surface from the shading information of a scanner image. This shape from shading problem in a real world environment has a global and complicated interdependency among the shape, the depth and the albcdo distribution of the book surface. Hence, the ovcrall surface shape must be recover...

Shape from Shading on Textured Cylindrical Surface - Restoring Distorted Scanner Images of Unfolded Book Surfaces

In this paper, we prenent a method lo obtain the 3D sfinpc of on unJolded curved b o k surficc Jmrn an image tolien b y on image-scanner. The estimated shape can Be used jar !he reatomiton 01 !he distorted book i n a y e . This problem i s a practical oppIicoiion oJ ihe shape Jmm shadlng theory. Mre confimeri fbat the esiimaied shape mostly nlotches !lie reat shape and t h ~ image mstotoiion ja...

Character Recognition of Thick Books Using a Stereo Vision System

In this paper, we propose a character recognition method for thick books with curved surfaces using a stereo vision system. Characters in images of thick book's pages acquired with an image scanner are difficult to recognize because they are deformed under the influence of curved surface. In our method, the 3D shape reconstruction of the book's surface is executed from the result of the stereos...

Shape from Shading with Interreflections under Proximal Light Source: 3D Shape Reconstruction of Unfolded Book Surface from a Scanner Image

3D Shape Reconstruction Using Three Light Sources in Image Scanner

We suggest the method t o recover the 3D shape of the object by using the color image scanner which has three light sources. The photometric stereo is traditional t o recover the surface normal of the object using the multiple light sources. In this method, it usually assumes the distant light sources to make the model simple. But the light sources in the image scanner are so close t o the obje...