A Method of 3D Model Retrieval Based on Hand Drawing

Abstract

The invention discloses a three-dimensional model searching method based on a sketching. The three-dimensional model searching method based on the sketching comprises the following steps: (1) generating multi-perspective profile diagrams; (2) extracting a placeholder diagram characteristic, a distance conversion characteristic, a profile signature characteristic, a Fourier descriptor, a Hu moment characteristic and a Poisson characteristic of each multi-perspective profile diagram; (3) obtaining a form of a novel characteristic; (4) by means of the form of the novel characteristic, extracting characteristics of a corresponding dimension from all the characteristics of the multi-perspective profile diagrams obtained in the step 2 to form a novel characteristic; (5) extracting a sketching characteristic as the step 2; (6) obtaining a novel characteristic of the sketching from characteristics of a sketching profile diagram in the same mode as the step 4 by means of the form of the novel characteristic obtained from the step 3 in an off-line period; and (7) finding out a novel characteristic of the profile diagram most similar to the novel characteristic of the sketching through a k-d tree characteristic matching method and determining a three-dimensional model generating the profile diagram. The three-dimensional model searching method based on the sketching lowers sensitiveness on setting of parameters, and improves the searching effect.

Description

technical field [0001] The invention belongs to the technical field of computer graphics, and in particular relates to a hand-drawn-based three-dimensional model retrieval method. This method uses multi-feature fusion technology to retrieve the most similar 3D image for the hand-drawn image input by the user in real time by fusing occupancy map features, distance transform features, contour signature features, Fourier descriptors, Hu moment features, and Poisson features. Model. Background technique [0002] Nowadays, computer graphics are more and more integrated into people's lives. In movie screens, large-scale online games, and various product advertisements, we can see lifelike virtual scenes drawn by computers, lifelike virtual characters and modern advanced technology. products, and these applications contain a large number of 3D models. For example, the Pandora planet depicted in the movie "Avatar" contains a large number of lifelike models of plants and animals; t...

AI Technical Summary

Problems solved by technology

From this, we can see that the retrieval technology based on the sample model is very difficult in practical applications, because there is often no one suitable for retrieval of 3D models, and it is quite time-consuming for the user to make another model

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