Cultural relic line graph drawing method based on vision-dependent curvature estimation

Abstract

The invention discloses a cultural relic line graph drawing method based on vision-dependent curvature estimation, comprising the following steps: estimating the discrete curvature of the vertexes of a triangular mesh model; dividing the model into a flat region and a feature region according to the curvature distribution of the model; sharpening and filtering the vertexes belonging to the feature region, and calculating out new triangular mesh model vertex coordinates; and extracting the feature contour line of the triangular mesh model, and generating lines, thus completing the drawing of a plane line graph of a 3D model of a cultural relic. According to the invention, a 3D model of a cultural relic is locally sharpened through a sharpening algorithm corresponding to a smoothing algorithm based on the mean Epsilon in the field of archaeology so that the texture details of the cultural relic can be drawn. The visual contour line of the surface of the cultural relic model is extracted based on vision-dependent curvature estimation, and then, a cultural relic line graph consistent with the visual perception of archaeologists is drawn automatically. The problem that manual archaeological drawing is slow, low in precision and high in work intensity is solved. The cultural relic line graph drawing method is a simple, efficient and practical computer-aided archaeological line graph drawing method.

Description

technical field [0001] The invention belongs to the technical field of line drawing drawing of cultural relics, and in particular relates to a line drawing method of line drawing of cultural relics based on visually dependent curvature estimation. Background technique [0002] Archaeological mapping is a basic work for the protection of cultural relics. During archaeological excavation, archaeologists need to draw line drawings of cultural relic fragments to describe the size, shape, structure, pattern and texture of cultural relics. High-quality line maps of cultural relics can be used for excavation report illustrations, paper illustrations, monographs and textbook illustrations, and exhibition charts, etc., with functions such as archive storage, auxiliary cultural relic restoration and protection, archaeological research, and cultural publishing. Using the traditional manual method of orthographic projection, it is necessary to draw a line map of cultural relics based o...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a drawn line graph that is more in line with the actual needs of archaeological work. Through the sharpening algorithm corresponding to the smoothing algorithm, local sharpening is performed on the basis of the mean value of ε in the archaeological field to ensure The details of the texture of the cultural relics are drawn; the line drawing method of cultural relics based on visually dependent curvature estimation effectively solves the problems of slow speed, low precision and high work intensity of manual archaeological drawing

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