Method and device for creating three-dimensional sketch and computer equipment

A sketch and three-dimensional technology, which is applied in the field of devices and computer equipment, and the creation method of three-dimensional sketches, can solve the problems of low efficiency of three-dimensional sketch creation, and achieve the effect of reducing the difficulty of creation, improving the creation efficiency, and narrowing the selection range.
CN109658474APending Publication Date: 2019-04-19SHENZHEN UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
SHENZHEN UNIV
Publication Date
2019-04-19

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Abstract

The invention relates to a Method and device for creating three-dimensional sketch and computer equipment, and the method comprises the steps: carrying out the feature extraction of a to-be-modified three-dimensional model through the computer equipment, obtaining linear features, carrying out the line segment processing of a two-dimensional stroke input by a user, and determining each straight line segment of the two-dimensional stroke; Then, obtaining linear features of the three-dimensional model and position relations between all straight line segments of the two-dimensional strokes, and generating candidate canvases according to all the position relations and preset canvas forming conditions; And determining a target canvas according to the capability coefficients of the candidate canvases, and performing back projection on the two-dimensional strokes on the target canvas to obtain a three-dimensional sketch. According to the method, the difficulty of creating the three-dimensional sketch can be reduced, so that the creation of the three-dimensional sketch is simpler; Furthermore, the creating efficiency of the three-dimensional sketch can be greatly improved.
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Description

technical field

[0001] The invention relates to the technical field of image processing, in particular to a method, device and computer equipment for creating a three-dimensional sketch. Background technique

[0002] At present, drawing two-dimensional curves from one or more viewpoints is mature, but it is extremely challenging to upgrade these two-dimensional strokes to a three-dimensional level. For a given two-dimensional stroke, back-project the two-dimensional stroke to three-dimensional After different canvases in the model, different 3D curves will be obtained. However, there may be countless canvases corresponding to them in the 3D model.

[0003] Upgrading two-dimensional strokes to three-dimensional. The common application scenario is that on the basis of an existing three-dimensional model, the user uses a two-dimensional input device such as a digital board to map the added two-dimensional strokes to the corresponding position in the three-dimensional model. To...

Claims

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