Abstract: Aiming at the problems of obvious chromatic aberrations, seams and inefficient processing between textures after 3D reconstruction of oblique images, a fast and efficient method of seamless texture homogenization is proposed. Firstly, this method performs image enhancement preprocessing on the input de-distorted image, and establishes constraint equations for all vertices and edges of the model, solves the color correction value of each vertex. Secondly, this method interpolates the three vertices to obtain the color correction value of the pixels inside the triangle. Then, a texture block with no global color difference is obtained by texture expansion. Finally, this method performs a reduced resolution Poisson editing on the texture block. The experimental results show that the method of this paper is used for texture homogenization processing, which has the advantages of no color difference between texture blocks, natural texture transition at the seam line, and faster calculation speed, which can enhance the readability of the 3D model and improve the display effect of the 3D model.

Key words: oblique photography, 3D reconstruction, texture mapping, uniform light and color, seamless texture