Method for enhancing cultural relic orthographic projection image

The invention discloses a method for enhancing a cultural relic orthographic projection image. The method comprises the following steps that the three-dimensional model of a cultural relic is established; normal information of the three-dimensional model is converted into pseudo color, coloring is performed on the three-dimensional model, and the normal orthographic projection image of the three-dimensional model is obtained by adopting an orthographic projection mode and saved as a normal image; coloring is performed on the three-dimensional model by utilizing the texture of the three-dimensional model, and the texture orthographic projection image of the three-dimensional model is obtained by adopting the orthographic projection mode and saved as a texture image; and the normal image and the texture image are fused so that an enhanced non-realistic orthographic projection image is obtained. The geometrical information of the cultural relic is reserved by the enhanced non-realistic orthographic projection im